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VulnerabilityPublished Updated

CVE-2026-31737: Linux kernel · net: ftgmac100: fix ring allocation unwind on open failure

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in d45230081f19c280096241353c26b0de457de795 : update Linux kernel when convenient.

Data as of 10 Nov 2026, 13:05 UTC

Severity
Low

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

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < d45230081f19c280096241353c26b0de457de795
Fixed in
  • d45230081f19c280096241353c26b0de457de795
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < c0fd0fe745f5e8c568d898cd1513d0083e46204a
Fixed in
  • c0fd0fe745f5e8c568d898cd1513d0083e46204a
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < a7e1bf392acf11dc4209820fef75758f6e42bd65
Fixed in
  • a7e1bf392acf11dc4209820fef75758f6e42bd65
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < 8351d18989c8642fc53e2e12d94e42314a39b078
Fixed in
  • 8351d18989c8642fc53e2e12d94e42314a39b078
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < 184b3a500d60ea48d1b176103cff1706c456edf3
Fixed in
  • 184b3a500d60ea48d1b176103cff1706c456edf3
LinuxLinuxAffected
  • ≥ d72e01a0430f8a1ae7adb3cbf0b2e73fcd99252e, < 82f86111f0704ab2ded11a2033bc6cf0be3e09ea
Fixed in
  • 82f86111f0704ab2ded11a2033bc6cf0be3e09ea

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

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