CVE-2016-6323
Description
The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 2.24-1 |
| debian | bullseye | fixed | 2.24-1 |
| debian | forky | fixed | 2.24-1 |
| debian | sid | fixed | 2.24-1 |
| debian | trixie | fixed | 2.24-1 |
| fedora | 23 | affected | |
| fedora | 24 | affected | |
| fedora | 25 | affected | |
| suse | 13.2 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gnu | glibc | {"endIncluding":"2.24"} | |
References
- http://lists.opensuse.org/opensuse-updates/2016-10/msg00009.html
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- http://www.openwall.com/lists/oss-security/2016/08/18/12
- http://www.securityfocus.com/bid/92532
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/
- https://security.gentoo.org/glsa/201706-19
- https://sourceware.org/bugzilla/show_bug.cgi?id=20435
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617
- https://www.suse.com/security/cve/CVE-2016-6323.html
- https://security-tracker.debian.org/tracker/CVE-2016-6323
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.