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VulnerabilityPublished Updated

CVE-2026-43257: Linux kernel · media: cx88: Add missing unmap in snd_cx88_hw_params()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f0d7f735eba963742009b0706e19dd0bed91537a : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:50 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in f0d7f735eba963742009b0706e19dd0bed91537a, e3fb15aadfc8643203bbdf97ace0396e4586fa64, dc911fccc6e08ef46a66b2a42a764252b001ee3c +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < f0d7f735eba963742009b0706e19dd0bed91537a
Fixed in
  • f0d7f735eba963742009b0706e19dd0bed91537a
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < e3fb15aadfc8643203bbdf97ace0396e4586fa64
Fixed in
  • e3fb15aadfc8643203bbdf97ace0396e4586fa64
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < dc911fccc6e08ef46a66b2a42a764252b001ee3c
Fixed in
  • dc911fccc6e08ef46a66b2a42a764252b001ee3c
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < dbc527d980f7ba8559de38f8c1e4158c71a78915
Fixed in
  • dbc527d980f7ba8559de38f8c1e4158c71a78915
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < 24f3dabeb97bd0bec8c1c926c97e3eb6a8129225
Fixed in
  • 24f3dabeb97bd0bec8c1c926c97e3eb6a8129225
LinuxLinuxAffected
  • ≥ b2c75abde0debfb824f72845c3ed77d4b66798a0, < 10ab64f8efc2f479293dce929fde326c285fc96f
Fixed in
  • 10ab64f8efc2f479293dce929fde326c285fc96f

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a kernel version that includes the fix identified by the listed commit hashes to ensure the vulnerability is remediated.

Description

A vulnerability in the Linux kernel's cx88 media driver was fixed by adding a missing unmap call in the snd_cx88_hw_params() function. This fix addresses a resource release issue in the error path where cx88_alsa_dma_unmap() was not called to release resources acquired by cx88_alsa_dma_map().

References

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