Blame SOURCES/CVE-2023-31436.patch

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From 85b78933a00c38dac80b5bbdf75a2114a0284765 Mon Sep 17 00:00:00 2001
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From: Joe Lawrence <joe.lawrence@redhat.com>
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Date: Mon, 26 Feb 2024 12:32:57 -0500
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Subject: [KPATCH CVE-2023-31436] kpatch fixes for CVE-2023-31436
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Kernels:
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3.10.0-1160.95.1.el7
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3.10.0-1160.99.1.el7
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3.10.0-1160.102.1.el7
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Kpatch-MR: https://gitlab.com/redhat/prdsc/rhel/src/kpatch/rhel-7/-/merge_requests/69
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Changes since last build:
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[x86_64]:
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igb_main.o: changed function: igb_configure
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l2cap_core.o: changed function: l2cap_chan_hold
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l2cap_core.o: changed function: l2cap_conn_get
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l2cap_core.o: changed function: l2cap_global_chan_by_psm
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l2cap_core.o: changed function: l2cap_recv_frame
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l2cap_core.o: new function: klp_l2cap_le_sig_cmd
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sch_atm.o: changed function: atm_tc_peek
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sch_atm.o: changed function: sch_atm_dequeue
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sch_drr.o: changed function: drr_dequeue
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sch_dsmark.o: changed function: dsmark_peek
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sch_hfsc.o: changed function: hfsc_enqueue
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sch_hfsc.o: changed function: qdisc_peek_len
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sch_multiq.o: changed function: multiq_peek
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sch_prio.o: changed function: prio_peek
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sch_qfq.o: changed function: qfq_change_class
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sch_qfq.o: changed function: qfq_dequeue
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sch_red.o: changed function: red_peek
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sch_sfb.o: changed function: sfb_peek
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sch_tbf.o: changed function: tbf_dequeue
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[ppc64le]:
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l2cap_core.o: changed function: __l2cap_chan_add
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l2cap_core.o: changed function: __l2cap_physical_cfm
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l2cap_core.o: changed function: __set_monitor_timer
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l2cap_core.o: changed function: __set_retrans_timer.part.24
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l2cap_core.o: changed function: l2cap_ack_timeout
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l2cap_core.o: changed function: l2cap_build_conf_req
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l2cap_core.o: changed function: l2cap_chan_busy
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l2cap_core.o: changed function: l2cap_chan_close
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l2cap_core.o: changed function: l2cap_chan_connect
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l2cap_core.o: changed function: l2cap_chan_del
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l2cap_core.o: changed function: l2cap_chan_hold
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l2cap_core.o: changed function: l2cap_chan_put
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l2cap_core.o: changed function: l2cap_chan_send
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l2cap_core.o: changed function: l2cap_chan_timeout
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l2cap_core.o: changed function: l2cap_conn_add.part.28
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l2cap_core.o: changed function: l2cap_conn_del
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l2cap_core.o: changed function: l2cap_conn_start
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l2cap_core.o: changed function: l2cap_connect
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l2cap_core.o: changed function: l2cap_connect_cfm
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l2cap_core.o: changed function: l2cap_connect_create_rsp
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l2cap_core.o: changed function: l2cap_data_channel
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l2cap_core.o: changed function: l2cap_disconn_cfm
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l2cap_core.o: changed function: l2cap_do_create
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l2cap_core.o: changed function: l2cap_do_start
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l2cap_core.o: changed function: l2cap_ertm_resend
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l2cap_core.o: changed function: l2cap_ertm_send
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l2cap_core.o: changed function: l2cap_global_fixed_chan
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l2cap_core.o: changed function: l2cap_handle_rej
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l2cap_core.o: changed function: l2cap_handle_srej
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l2cap_core.o: changed function: l2cap_logical_cfm
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l2cap_core.o: changed function: l2cap_monitor_timeout
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l2cap_core.o: changed function: l2cap_move_done
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l2cap_core.o: changed function: l2cap_move_setup
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l2cap_core.o: changed function: l2cap_parse_conf_rsp.constprop.36
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l2cap_core.o: changed function: l2cap_pass_to_tx
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l2cap_core.o: changed function: l2cap_process_reqseq
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l2cap_core.o: changed function: l2cap_recv_frame
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l2cap_core.o: changed function: l2cap_retrans_timeout
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l2cap_core.o: changed function: l2cap_retransmit_all
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l2cap_core.o: changed function: l2cap_rx
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l2cap_core.o: changed function: l2cap_rx_state_recv
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l2cap_core.o: changed function: l2cap_security_cfm
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l2cap_core.o: changed function: l2cap_send_ack
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l2cap_core.o: changed function: l2cap_send_efs_conf_rsp
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l2cap_core.o: changed function: l2cap_send_i_or_rr_or_rnr
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l2cap_core.o: changed function: l2cap_send_move_chan_cfm
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l2cap_core.o: changed function: l2cap_send_move_chan_cfm_icid
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l2cap_core.o: changed function: l2cap_send_move_chan_req
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l2cap_core.o: changed function: l2cap_send_rr_or_rnr
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l2cap_core.o: changed function: l2cap_send_sframe
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l2cap_core.o: changed function: l2cap_send_srej
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l2cap_core.o: changed function: l2cap_send_srej_tail
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l2cap_core.o: changed function: l2cap_start_connection
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l2cap_core.o: new function: l2cap_connect_req
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sch_atm.o: changed function: atm_tc_bind_filter
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sch_atm.o: changed function: atm_tc_change
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sch_atm.o: changed function: atm_tc_delete
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sch_atm.o: changed function: atm_tc_destroy
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sch_atm.o: changed function: atm_tc_enqueue
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sch_atm.o: changed function: atm_tc_find
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sch_atm.o: changed function: atm_tc_graft
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sch_atm.o: changed function: atm_tc_leaf
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sch_atm.o: changed function: atm_tc_peek
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sch_atm.o: changed function: atm_tc_put
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sch_atm.o: changed function: atm_tc_reset
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sch_atm.o: changed function: atm_tc_tcf_block
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sch_atm.o: changed function: sch_atm_dequeue
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sch_drr.o: changed function: drr_dequeue
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sch_dsmark.o: changed function: dsmark_bind_filter
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sch_dsmark.o: changed function: dsmark_change
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sch_dsmark.o: changed function: dsmark_destroy
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sch_dsmark.o: changed function: dsmark_dump_class
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sch_dsmark.o: changed function: dsmark_init
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sch_dsmark.o: changed function: dsmark_peek
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sch_dsmark.o: changed function: dsmark_reset
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sch_hfsc.o: changed function: hfsc_change_class
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sch_hfsc.o: changed function: hfsc_dequeue
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sch_hfsc.o: changed function: hfsc_enqueue
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sch_multiq.o: changed function: multiq_peek
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sch_prio.o: changed function: prio_peek
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sch_qfq.o: changed function: qfq_change_class
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sch_qfq.o: changed function: qfq_dequeue
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sch_red.o: changed function: red_peek
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sch_sfb.o: changed function: sfb_peek
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sch_tbf.o: changed function: tbf_dequeue
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---------------------------
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Modifications: none
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commit 906f32101a825691a705bc5754716cc870f64b83
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Author: Davide Caratti <dcaratti@redhat.com>
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Date:   Tue Sep 5 11:15:12 2023 +0200
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    net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg
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    Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2225555
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    Upstream Status: net.git commit 3037933448f6
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    commit 3037933448f60f9acb705997eae62013ecb81e0d
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    Author: Gwangun Jung <exsociety@gmail.com>
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    Date:   Thu Apr 13 19:35:54 2023 +0900
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        net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg
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        If the TCA_QFQ_LMAX value is not offered through nlattr, lmax is determined by the MTU value of the network device.
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        The MTU of the loopback device can be set up to 2^31-1.
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        As a result, it is possible to have an lmax value that exceeds QFQ_MIN_LMAX.
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        Due to the invalid lmax value, an index is generated that exceeds the QFQ_MAX_INDEX(=24) value, causing out-of-bounds read/write errors.
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        The following reports a oob access:
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        [   84.582666] BUG: KASAN: slab-out-of-bounds in qfq_activate_agg.constprop.0 (net/sched/sch_qfq.c:1027 net/sched/sch_qfq.c:1060 net/sched/sch_qfq.c:1313)
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        [   84.583267] Read of size 4 at addr ffff88810f676948 by task ping/301
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        [   84.583686]
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        [   84.583797] CPU: 3 PID: 301 Comm: ping Not tainted 6.3.0-rc5 #1
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        [   84.584164] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
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        [   84.584644] Call Trace:
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        [   84.584787]  <TASK>
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        [   84.584906] dump_stack_lvl (lib/dump_stack.c:107 (discriminator 1))
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        [   84.585108] print_report (mm/kasan/report.c:320 mm/kasan/report.c:430)
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        [   84.585570] kasan_report (mm/kasan/report.c:538)
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        [   84.585988] qfq_activate_agg.constprop.0 (net/sched/sch_qfq.c:1027 net/sched/sch_qfq.c:1060 net/sched/sch_qfq.c:1313)
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        [   84.586599] qfq_enqueue (net/sched/sch_qfq.c:1255)
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        [   84.587607] dev_qdisc_enqueue (net/core/dev.c:3776)
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        [   84.587749] __dev_queue_xmit (./include/net/sch_generic.h:186 net/core/dev.c:3865 net/core/dev.c:4212)
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        [   84.588763] ip_finish_output2 (./include/net/neighbour.h:546 net/ipv4/ip_output.c:228)
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        [   84.589460] ip_output (net/ipv4/ip_output.c:430)
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        [   84.590132] ip_push_pending_frames (./include/net/dst.h:444 net/ipv4/ip_output.c:126 net/ipv4/ip_output.c:1586 net/ipv4/ip_output.c:1606)
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        [   84.590285] raw_sendmsg (net/ipv4/raw.c:649)
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        [   84.591960] sock_sendmsg (net/socket.c:724 net/socket.c:747)
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        [   84.592084] __sys_sendto (net/socket.c:2142)
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        [   84.593306] __x64_sys_sendto (net/socket.c:2150)
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        [   84.593779] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
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        [   84.593902] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)
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        [   84.594070] RIP: 0033:0x7fe568032066
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        [   84.594192] Code: 0e 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c09[ 84.594796] RSP: 002b:00007ffce388b4e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
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        Code starting with the faulting instruction
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        ===========================================
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        [   84.595047] RAX: ffffffffffffffda RBX: 00007ffce388cc70 RCX: 00007fe568032066
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        [   84.595281] RDX: 0000000000000040 RSI: 00005605fdad6d10 RDI: 0000000000000003
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        [   84.595515] RBP: 00005605fdad6d10 R08: 00007ffce388eeec R09: 0000000000000010
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        [   84.595749] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000040
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        [   84.595984] R13: 00007ffce388cc30 R14: 00007ffce388b4f0 R15: 0000001d00000001
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        [   84.596218]  </TASK>
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        [   84.596295]
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        [   84.596351] Allocated by task 291:
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        [   84.596467] kasan_save_stack (mm/kasan/common.c:46)
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        [   84.596597] kasan_set_track (mm/kasan/common.c:52)
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        [   84.596725] __kasan_kmalloc (mm/kasan/common.c:384)
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        [   84.596852] __kmalloc_node (./include/linux/kasan.h:196 mm/slab_common.c:967 mm/slab_common.c:974)
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        [   84.596979] qdisc_alloc (./include/linux/slab.h:610 ./include/linux/slab.h:731 net/sched/sch_generic.c:938)
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        [   84.597100] qdisc_create (net/sched/sch_api.c:1244)
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        [   84.597222] tc_modify_qdisc (net/sched/sch_api.c:1680)
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        [   84.597357] rtnetlink_rcv_msg (net/core/rtnetlink.c:6174)
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        [   84.597495] netlink_rcv_skb (net/netlink/af_netlink.c:2574)
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        [   84.597627] netlink_unicast (net/netlink/af_netlink.c:1340 net/netlink/af_netlink.c:1365)
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        [   84.597759] netlink_sendmsg (net/netlink/af_netlink.c:1942)
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        [   84.597891] sock_sendmsg (net/socket.c:724 net/socket.c:747)
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        [   84.598016] ____sys_sendmsg (net/socket.c:2501)
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        [   84.598147] ___sys_sendmsg (net/socket.c:2557)
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        [   84.598275] __sys_sendmsg (./include/linux/file.h:31 net/socket.c:2586)
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        [   84.598399] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
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        [   84.598520] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)
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        [   84.598688]
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        [   84.598744] The buggy address belongs to the object at ffff88810f674000
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        [   84.598744]  which belongs to the cache kmalloc-8k of size 8192
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        [   84.599135] The buggy address is located 2664 bytes to the right of
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        [   84.599135]  allocated 7904-byte region [ffff88810f674000, ffff88810f675ee0)
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        [   84.599544]
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        [   84.599598] The buggy address belongs to the physical page:
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        [   84.599777] page:00000000e638567f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f670
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        [   84.600074] head:00000000e638567f order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
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        [   84.600330] flags: 0x200000000010200(slab|head|node=0|zone=2)
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        [   84.600517] raw: 0200000000010200 ffff888100043180 dead000000000122 0000000000000000
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        [   84.600764] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000
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        [   84.601009] page dumped because: kasan: bad access detected
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        [   84.601187]
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        [   84.601241] Memory state around the buggy address:
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        [   84.601396]  ffff88810f676800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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        [   84.601620]  ffff88810f676880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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        [   84.601845] >ffff88810f676900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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        [   84.602069]                                               ^
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        [   84.602243]  ffff88810f676980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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        [   84.602468]  ffff88810f676a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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        [   84.602693] ==================================================================
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        [   84.602924] Disabling lock debugging due to kernel taint
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        Fixes: 3015f3d2a3cd ("pkt_sched: enable QFQ to support TSO/GSO")
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        Reported-by: Gwangun Jung <exsociety@gmail.com>
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        Signed-off-by: Gwangun Jung <exsociety@gmail.com>
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        Acked-by: Jamal Hadi Salim<jhs@mojatatu.com>
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        Signed-off-by: David S. Miller <davem@davemloft.net>
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    Signed-off-by: Davide Caratti <dcaratti@redhat.com>
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Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
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---
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 net/sched/sch_qfq.c | 13 +++++++------
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 1 file changed, 7 insertions(+), 6 deletions(-)
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diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
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index ca8c79456c80..a0e5ebac5f39 100644
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--- a/net/sched/sch_qfq.c
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+++ b/net/sched/sch_qfq.c
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@@ -436,15 +436,16 @@ static int qfq_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
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 	} else
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 		weight = 1;
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-	if (tb[TCA_QFQ_LMAX]) {
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+	if (tb[TCA_QFQ_LMAX])
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 		lmax = nla_get_u32(tb[TCA_QFQ_LMAX]);
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-		if (lmax < QFQ_MIN_LMAX || lmax > (1UL << QFQ_MTU_SHIFT)) {
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-			pr_notice("qfq: invalid max length %u\n", lmax);
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-			return -EINVAL;
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-		}
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-	} else
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+	else
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 		lmax = psched_mtu(qdisc_dev(sch));
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+	if (lmax < QFQ_MIN_LMAX || lmax > (1UL << QFQ_MTU_SHIFT)) {
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+		pr_notice("qfq: invalid max length %u\n", lmax);
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+		return -EINVAL;
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+	}
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+
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 	inv_w = ONE_FP / weight;
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 	weight = ONE_FP / inv_w;
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-- 
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2.44.0
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