mirrors/poky
1
0
Fork 0
mirror of https://git.yoctoproject.org/poky synced 2026-04-18 03:32:13 +02:00
Code Issues Packages Projects Releases Wiki Activity

glibc: Fix CVE-2021-27645

Browse Source 
CVE:
CVE-2021-27645

(From OE-Core rev: 0d6b266c469a35628a3602590611d05ebbf4d562)

Signed-off-by: Khairul Rohaizzat Jamaluddin <khairul.rohaizzat.jamaluddin@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khairul Rohaizzat Jamaluddin
2021-03-11 23:21:28 +08:00
committed by Richard Purdie
parent 6a33b20b6a
commit a9d032345f
2 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
meta/recipes-core/glibc/glibc/CVE-2021-27645.patch Normal file
View File

@@ -0,0 +1,51 @@
From dca565886b5e8bd7966e15f0ca42ee5cff686673 Mon Sep 17 00:00:00 2001
From: DJ Delorie <dj@redhat.com>
Date: Thu, 25 Feb 2021 16:08:21 -0500
Subject: [PATCH] nscd: Fix double free in netgroupcache [BZ #27462]
In commit 745664bd798ec8fd50438605948eea594179fba1 a use-after-free
was fixed, but this led to an occasional double-free. This patch
tracks the "live" allocation better.
Tested manually by a third party.
Related: RHBZ 1927877
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=commit;h=dca565886b5e8bd7966e15f0ca42ee5cff686673]
CVE: CVE-2021-27645
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Signed-off-by: Khairul Rohaizzat Jamaluddin <khairul.rohaizzat.jamaluddin@intel.com>
---
nscd/netgroupcache.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/nscd/netgroupcache.c b/nscd/netgroupcache.c
index dba6ceec1b..ad2daddafd 100644
--- a/nscd/netgroupcache.c
+++ b/nscd/netgroupcache.c
@@ -248,7 +248,7 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req,
: NULL);
ndomain = (ndomain ? newbuf + ndomaindiff
: NULL);
- buffer = newbuf;
+ *tofreep = buffer = newbuf;
}
nhost = memcpy (buffer + bufused,
@@ -319,7 +319,7 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req,
else if (status == NSS_STATUS_TRYAGAIN && e == ERANGE)
{
buflen *= 2;
- buffer = xrealloc (buffer, buflen);
+ *tofreep = buffer = xrealloc (buffer, buflen);
}
else if (status == NSS_STATUS_RETURN
|| status == NSS_STATUS_NOTFOUND
--
2.27.0

1
meta/recipes-core/glibc/glibc_2.33.bb
View File

@@ -46,6 +46,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \
file://0031-x86-Require-full-ISA-support-for-x86-64-level-marker.patch \
file://0032-string-Work-around-GCC-PR-98512-in-rawmemchr.patch \
file://0033-x86-Handle-_SC_LEVEL1_ICACHE_LINESIZE-BZ-27444.patch \
file://CVE-2021-27645.patch \
"
S = "${WORKDIR}/git"
B = "${WORKDIR}/build-${TARGET_SYS}"