CVE-2017-6874
Description
Race condition in kernel/ucount.c in the Linux kernel through 4.10.2 allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls that leverage certain decrement behavior that causes incorrect interaction between put_ucounts and get_ucounts.
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 | 4.9.16-1 |
| debian | bullseye | fixed | 4.9.16-1 |
| debian | forky | fixed | 4.9.16-1 |
| debian | sid | fixed | 4.9.16-1 |
| debian | trixie | fixed | 4.9.16-1 |
| linux-kernel | affected | 4.9.16 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=040757f738e13caaa9c5078bca79aa97e11dde88
- http://www.securityfocus.com/bid/96856
- https://github.com/torvalds/linux/commit/040757f738e13caaa9c5078bca79aa97e11dde88
- https://www.suse.com/security/cve/CVE-2017-6874.html
- https://security-tracker.debian.org/tracker/CVE-2017-6874
CWEs
CWE-362 CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.