Medium severity5.5NVD Advisory· Published May 1, 2026· Updated Jul 14, 2026
CVE-2026-31737
CVE-2026-31737
Description
In the Linux kernel, the following vulnerability has been resolved:
net: ftgmac100: fix ring allocation unwind on open failure
ftgmac100_alloc_rings() allocates rx_skbs, tx_skbs, rxdes, txdes, and rx_scratch in stages. On intermediate failures it returned -ENOMEM directly, leaking resources allocated earlier in the function.
Rework the failure path to use staged local unwind labels and free allocated resources in reverse order before returning -ENOMEM. This matches common netdev allocation cleanup style.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.12,<5.10.253
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
10- git.kernel.org/stable/c/184b3a500d60ea48d1b176103cff1706c456edf3nvdPatch
- git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057nvdPatch
- git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09eanvdPatch
- git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078nvdPatch
- git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97envdPatch
- git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65nvdPatch
- git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204anvdPatch
- git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795nvdPatch
- cert-portal.siemens.com/productcert/html/ssa-019113.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-082556.htmlnvd
News mentions
1- Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFPCISA ICS Advisories