CVE-2026-31594: Linux kernel · PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.153 : update Linux kernel when convenient.
Data as of 12 Nov 2026, 03:33 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in 5.15.153
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Apr 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 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Linux Linux | Affected
| Fixed in– |
AI-suggested
A fix is available in Linux kernel version 5.15.153 that removes the duplicate resource teardown. Users should update to this or a later patched kernel version to remediate the issue.
Description
A vulnerability in the Linux kernel's PCI endpoint driver pci-epf-vntb causes a kernel oops due to duplicate resource teardown. The function epf_ntb_epc_destroy() redundantly performs teardown operations that the caller is also expected to perform, leading to a kernel crash when link operations fail. This issue has been resolved by removing the duplicate teardown and adjusting reference counting.
References
- git.kernel.org/stable/c/305a0674bc552bfcc3231e23fb91cf4f62aec168 (opens in a new tab)
- git.kernel.org/stable/c/b261027a1a235d8925e332363f23135a0eff2b35 (opens in a new tab)
- git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2 (opens in a new tab)
- git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3 (opens in a new tab)
- git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a (opens in a new tab)
- git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec (opens in a new tab)
- git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e (opens in a new tab)
- git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54 (opens in a new tab)