CVE-2026-23091: Linux kernel · intel_th: fix device leak on output open()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f9b059bda4276f2bb72cb98ec7875a747f042ea2 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- 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, 2026-06-10.
- Patch
- Available – fixed in f9b059bda4276f2bb72cb98ec7875a747f042ea2, bf7785434b5d05d940d936b78925080950bd54dd, b71e64ef7ff9443835d1333e3e80ab1e49e5209f +4
Exploitation evidence
Disclosed: evidence found.
CVE published 4 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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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Description
In the Linux kernel, the following vulnerability has been resolved: intel_th: fix device leak on output open() Make sure to drop the reference taken when looking up the th device during output device open() on errors and on close(). Note that a recent commit fixed the leak in a couple of open() error paths but not all of them, and the reference is still leaking on successful open().
References
- git.kernel.org/stable/c/af4b9467296b9a16ebc008147238070236982b6d (opens in a new tab)
- git.kernel.org/stable/c/64015cbf06e8bb75b81ae95b997e847b55280f7f (opens in a new tab)
- git.kernel.org/stable/c/b71e64ef7ff9443835d1333e3e80ab1e49e5209f (opens in a new tab)
- git.kernel.org/stable/c/bf7785434b5d05d940d936b78925080950bd54dd (opens in a new tab)
- git.kernel.org/stable/c/0fca16c5591534cc1fec8b6181277ee3a3d0f26c (opens in a new tab)
- git.kernel.org/stable/c/f9b059bda4276f2bb72cb98ec7875a747f042ea2 (opens in a new tab)
- git.kernel.org/stable/c/95fc36a234da24bbc5f476f8104a5a15f99ed3e3 (opens in a new tab)