CVE-2026-43135: Linux kernel · media: cx23885: Add missing unmap in snd_cx23885_hw_params()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fda46c9025b755ea50a969b960f333be62421b71 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 16:04 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 fda46c9025b755ea50a969b960f333be62421b71, fc4df593a8ffded2f77d69a73ecb51d364932ca5, 544215cc37d032ccaf1919852c05e2439a4d7540 +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 multiple Linux kernel commits. Users should update to a Linux kernel version that includes these fixes to resolve the issue.
Description
A vulnerability in the Linux kernel's cx23885 media driver was fixed by adding a missing unmap operation in the snd_cx23885_hw_params() function. The fix ensures that resources allocated by cx23885_alsa_dma_map() are properly released in error paths by calling cx23885_alsa_dma_unmap().
References
- git.kernel.org/stable/c/fda46c9025b755ea50a969b960f333be62421b71 (opens in a new tab)
- git.kernel.org/stable/c/0b7f56084cc3d7766bf274b71cd14cc9674b76bf (opens in a new tab)
- git.kernel.org/stable/c/505630dd1ebf4b53d3f2866c057ddd93157a24d8 (opens in a new tab)
- git.kernel.org/stable/c/544215cc37d032ccaf1919852c05e2439a4d7540 (opens in a new tab)
- git.kernel.org/stable/c/9c0a6ff538660c36a98081916a24f08d55a91331 (opens in a new tab)
- git.kernel.org/stable/c/9544b73cad4ee667fed6a60f71570c58a870a735 (opens in a new tab)
- git.kernel.org/stable/c/fc4df593a8ffded2f77d69a73ecb51d364932ca5 (opens in a new tab)
- git.kernel.org/stable/c/141c81849fab2ad4d6e3fdaff7cbaa873e8b5eb2 (opens in a new tab)