Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: dummy: fix UMP event stack overread The dummy sequencer port forwards events by copying an incoming struct snd_seq_event into a stack temporary, rewriting source and destination, and dispatching the temporary to subscribers. That legacy event storage is smaller than struct snd_seq_ump_event. When a UMP event reaches the dummy client, the copy leaves the UMP flag set but only provides legacy-sized stack storage. The subscriber delivery path then uses snd_seq_event_packet_size() and copies a UMP-sized packet from that stack object, reading past the end of the temporary. Use the existing union __snd_seq_event storage and copy the packet size reported for the incoming event before rewriting the common routing fields. This preserves the full UMP packet for UMP events while keeping legacy event handling unchanged.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.10, < 6.12.94 |
References
- https://git.kernel.org/stable/c/2b5ff4db5d7aa5b981d966df02e687f79ad7b311Patch
- https://git.kernel.org/stable/c/6671a46144f880c5a167930ebb14c12f3d059fe9Patch
- https://git.kernel.org/stable/c/6676b6063440561db600494049ce7ffb695c8cc4Patch
- https://git.kernel.org/stable/c/a7ef78a2c536242ccb7a4429da01580b2409bb24Patch
FAQ
What is CVE-2026-53241?
CVE-2026-53241 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: dummy: fix UMP event stack overread The dummy sequencer port forwards events by copying an incoming struct snd_seq_even...
How severe is CVE-2026-53241?
CVE-2026-53241 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53241?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.