7.8

CVE-2026-43126: ALSA: mixer: oss: Add card disconnect checkpoints

Modified
AliasesUBUNTU-CVE-2026-43126DEBIAN-CVE-2026-43126
Published 06-05-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-43126 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 10
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:2195-1SUSE-SU-2026:2238-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:2317-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: mixer: oss: Add card disconnect checkpoints ALSA OSS mixer layer calls the kcontrol ops rather individually, and pending calls might be not always caught at disconnecting the device. For avoiding the potential UAF scenarios, add sanity checks of the card disconnection at each entry point of OSS mixer accesses. The rwsem is taken just before that check, hence the rest context should be covered by that properly.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.18% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu159 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 11ecfba92bdb420456a48da45a756b24d6356f72 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 20c52a70414095447da1be076f492cc7a6dce7cf | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ae583f113d15fa97e5234133c20d09f8e6214e47 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e6645e625480cdf1079a4265f758d13b70721029 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8c097cf736993454acf3f711a3b376d6c7ad8965 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 084d5d44418148662365eced3e126ad1a81ee3e2 | 2.6.12
  • linux_kernel≥ 2.6.12, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.85-1 | < 6.19.6-1

3 vendors · 162 products

References

11 links
Show all 11 references