CVE-2017-9985
Description
The snd_msndmidi_input_read function in sound/isa/msnd/msnd_midi.c in the Linux kernel through 4.11.7 allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a "double fetch" vulnerability.
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 |
|---|---|---|---|
| arch | fixed | 4.9.50-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 4.13.4-1 |
| debian | bullseye | fixed | 4.13.4-1 |
| debian | forky | fixed | 4.13.4-1 |
| debian | sid | fixed | 4.13.4-1 |
| debian | trixie | fixed | 4.13.4-1 |
| linux-kernel | affected | 3.18.71 | |
| ubuntu | 14.04 | affected | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=20e2b791796bd68816fa115f12be5320de2b8021
- http://www.securityfocus.com/bid/99335
- https://bugzilla.kernel.org/show_bug.cgi?id=196133
- https://github.com/torvalds/linux/commit/20e2b791796bd68816fa115f12be5320de2b8021
- https://usn.ubuntu.com/3754-1/
- https://www.suse.com/security/cve/CVE-2017-9985.html
- https://security-tracker.debian.org/tracker/CVE-2017-9985
CWEs
CWE-125
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.