CVE-2026-31736: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled If the gmac0 is disabled, the precheck for a valid ingress device will cause a NULL pointer deref and crash the system. This happens because eth->netdev[0] will be NULL but the code will directly try to access netdev_ops. Instead of just checking for the first net_device, it must be checked if any of the mtk_eth net_devices is matching the netdev_ops of the ingress device.

Засегнати продукти

• Linux Linux: 73cfd947dbdb25ef9863ac49c4596a7d53ad4025 преди 0b832aad33e6f160fda310f0306a6483d85e9d6e; 73cfd947dbdb25ef9863ac49c4596a7d53ad4025 преди 5dff799c677152dde963c3917bacd9127b03e145; 73cfd947dbdb25ef9863ac49c4596a7d53ad4025 преди 7b2380f0a0e374010c1a4a13203511b9dee5b166; 73cfd947dbdb25ef9863ac49c4596a7d53ad4025 преди 976ff48c2ac6e6b25b01428c9d7997bcd0fb2949
• Linux Linux: 6.11; преди 6.11; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31736
• https://nvd.nist.gov/vuln/detail/CVE-2026-31736
• https://git.kernel.org/stable/c/0b832aad33e6f160fda310f0306a6483d85e9d6e
• https://git.kernel.org/stable/c/5dff799c677152dde963c3917bacd9127b03e145
• https://git.kernel.org/stable/c/7b2380f0a0e374010c1a4a13203511b9dee5b166
• https://git.kernel.org/stable/c/976ff48c2ac6e6b25b01428c9d7997bcd0fb2949