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From 91c80c06affa3f4bfe106d2291efc360ab2b421d Mon Sep 17 00:00:00 2001
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From: Mark Reynolds <mreynolds@redhat.com>
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Date: Thu, 26 Oct 2017 10:03:39 -0400
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Subject: [PATCH] Ticket 48894 - harden valueset_array_to_sorted_quick valueset
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access
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Description: It's possible during the sorting of a valueset to access an
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array element past the allocated size, and also go below the index 0.
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https://pagure.io/389-ds-base/issue/48894
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Reviewed by: nweiderm (Thanks!)
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(cherry picked from commit 2086d052e338ddcbcf6bd3222617991641573a12)
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---
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ldap/servers/slapd/valueset.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/ldap/servers/slapd/valueset.c b/ldap/servers/slapd/valueset.c
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index 8a824ac4a..e22bc9c39 100644
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--- a/ldap/servers/slapd/valueset.c
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+++ b/ldap/servers/slapd/valueset.c
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@@ -1054,11 +1054,11 @@ valueset_array_to_sorted_quick (const Slapi_Attr *a, Slapi_ValueSet *vs, size_t
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while (1) {
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do {
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i++;
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- } while ( valueset_value_cmp(a, vs->va[vs->sorted[i]], vs->va[pivot]) < 0);
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+ } while (i < vs->max && valueset_value_cmp(a, vs->va[vs->sorted[i]], vs->va[pivot]) < 0);
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do {
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j--;
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- } while ( valueset_value_cmp(a, vs->va[vs->sorted[j]], vs->va[pivot]) > 0);
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+ } while (valueset_value_cmp(a, vs->va[vs->sorted[j]], vs->va[pivot]) > 0 && j > 0);
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if (i >= j) {
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break;
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--
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2.13.6
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