CVE-2026-31737: Linux kernel · net: ftgmac100: fix ring allocation unwind on open failure
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d45230081f19c280096241353c26b0de457de795 : update Linux kernel when convenient.
Data as of 10 Nov 2026, 13:05 UTC
Rated Low by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in d45230081f19c280096241353c26b0de457de795, c0fd0fe745f5e8c568d898cd1513d0083e46204a, a7e1bf392acf11dc4209820fef75758f6e42bd65 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 1 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 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 commits identified by the fixedVersions hashes. Users should update their Linux kernel to a version that includes these fixes to prevent resource leaks in the ftgmac100 driver. No additional mitigation steps are indicated.
Description
A resource leak vulnerability in the Linux kernel's ftgmac100 network driver was fixed. The issue occurred during ring allocation in the ftgmac100_alloc_rings() function, where intermediate failures caused by memory allocation errors led to leaked resources. The fix reworks the failure path to properly free allocated resources in reverse order before returning an error.
References
- git.kernel.org/stable/c/184b3a500d60ea48d1b176103cff1706c456edf3 (opens in a new tab)
- git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057 (opens in a new tab)
- git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65 (opens in a new tab)
- git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97e (opens in a new tab)
- git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795 (opens in a new tab)
- git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078 (opens in a new tab)
- git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09ea (opens in a new tab)
- git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204a (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)