CVE-2025-40219: Linux kernel · PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f3015627b6e9ddf85cfeaf42405b3c194dde2c36 : update Linux kernel when convenient.
Data as of 10 Nov 2026, 15:03 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 f3015627b6e9ddf85cfeaf42405b3c194dde2c36, d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b, bea1d373098b22d7142da48750ce5526096425bc +5
Exploitation evidence
Disclosed: evidence found.
CVE published 4 Dec 2025
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 10 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 after version 5.0, as indicated by the listed fixed commit hashes. Users should update to a Linux kernel version that includes these fixes to resolve the race condition. No additional mitigation steps are indicated.
Description
A race condition vulnerability in the Linux kernel's PCI/IOV subsystem involving SR-IOV enable/disable operations and hotplug events has been fixed. The original fix caused deadlocks and was reverted. The final fix involves taking the PCI rescan/remove lock earlier in the call chain to prevent the race without causing deadlocks.
References
- git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84 (opens in a new tab)
- git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b (opens in a new tab)
- git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59 (opens in a new tab)
- git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747 (opens in a new tab)
- git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611 (opens in a new tab)
- git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc (opens in a new tab)
- git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36 (opens in a new tab)
- git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)