CVE-2026-43257: Linux kernel · media: cx88: Add missing unmap in snd_cx88_hw_params()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f0d7f735eba963742009b0706e19dd0bed91537a : update Linux kernel when convenient.
Data as of 6 Nov 2026, 15:50 UTC
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
Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- git.kernel.org/stable/c/f0d7f735eba963742009b0706e19dd0bed91537a (opens in a new tab)
- git.kernel.org/stable/c/dc911fccc6e08ef46a66b2a42a764252b001ee3c (opens in a new tab)
- git.kernel.org/stable/c/24f3dabeb97bd0bec8c1c926c97e3eb6a8129225 (opens in a new tab)
- git.kernel.org/stable/c/10ab64f8efc2f479293dce929fde326c285fc96f (opens in a new tab)
- git.kernel.org/stable/c/e3fb15aadfc8643203bbdf97ace0396e4586fa64 (opens in a new tab)
- git.kernel.org/stable/c/1ce8c2a8f050a23240553c8bae628ac623f9dbc1 (opens in a new tab)
- git.kernel.org/stable/c/3baefeeb7b85e1e34eebef399ffa312be7179e30 (opens in a new tab)
- git.kernel.org/stable/c/dbc527d980f7ba8559de38f8c1e4158c71a78915 (opens in a new tab)