CVE-2026-31737 PUBLISHED

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.

• https://git.kernel.org/stable/c/184b3a500d60ea48d1b176103cff1706c456edf3
• https://git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057
• https://git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65
• https://git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97e
• https://git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795
• https://git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078
• https://git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09ea
• https://git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204a