Description
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.
Product status
73cfd947dbdb25ef9863ac49c4596a7d53ad4025 (git) before 0b832aad33e6f160fda310f0306a6483d85e9d6e
73cfd947dbdb25ef9863ac49c4596a7d53ad4025 (git) before 5dff799c677152dde963c3917bacd9127b03e145
73cfd947dbdb25ef9863ac49c4596a7d53ad4025 (git) before 7b2380f0a0e374010c1a4a13203511b9dee5b166
73cfd947dbdb25ef9863ac49c4596a7d53ad4025 (git) before 976ff48c2ac6e6b25b01428c9d7997bcd0fb2949
6.11
Any version before 6.11
6.12.81 (semver)
6.18.22 (semver)
6.19.12 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/0b832aad33e6f160fda310f0306a6483d85e9d6e
git.kernel.org/...c/5dff799c677152dde963c3917bacd9127b03e145
git.kernel.org/...c/7b2380f0a0e374010c1a4a13203511b9dee5b166
git.kernel.org/...c/976ff48c2ac6e6b25b01428c9d7997bcd0fb2949