CVE-2015-2830
Description
arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16.
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 |
|---|---|---|---|
| debian | bookworm | fixed | 3.16.7-ckt9-1 |
| debian | bullseye | fixed | 3.16.7-ckt9-1 |
| debian | forky | fixed | 3.16.7-ckt9-1 |
| debian | sid | fixed | 3.16.7-ckt9-1 |
| debian | trixie | fixed | 3.16.7-ckt9-1 |
| linux-kernel | affected | | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| ubuntu | 12.04 | affected | |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=956421fbb74c3a6261903f3836c0740187cf038b
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html
- http://rhn.redhat.com/errata/RHSA-2015-1137.html
- http://rhn.redhat.com/errata/RHSA-2015-1138.html
- http://rhn.redhat.com/errata/RHSA-2015-1221.html
- http://www.debian.org/security/2015/dsa-3237
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2
- http://www.openwall.com/lists/oss-security/2015/04/02/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securitytracker.com/id/1032413
- http://www.ubuntu.com/usn/USN-2631-1
- http://www.ubuntu.com/usn/USN-2632-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1208598
- https://github.com/torvalds/linux/commit/956421fbb74c3a6261903f3836c0740187cf038b
- https://security-tracker.debian.org/tracker/CVE-2015-2830
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.