Description
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Correctly handle Rx checksum offload errors The stmmac_rx function would previously set skb->ip_summed to CHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled and the packet was of a known IP ethertype. However, this logic failed to check if the hardware had actually reported a checksum error. The hardware status, indicating a header or payload checksum failure, was being ignored at this stage. This could cause corrupt packets to be passed up the network stack as valid. This patch corrects the logic by checking the `csum_none` status flag, which is set when the hardware reports a checksum error. If this flag is set, skb->ip_summed is now correctly set to CHECKSUM_NONE, ensuring the kernel's network stack will perform its own validation and properly handle the corrupt packet.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 63fbe0e6413279d5ea5842e2423e351ded547683
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 719fcdf29051f7471d5d433475af76219019d33d
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 1aa319e0f12d2d761a31556b82a5852c98eb0bea
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before ee0aace5f844ef59335148875d05bec8764e71e8
6.6.117 (semver)
6.12.58 (semver)
6.17.8 (semver)
6.18 (original_commit_for_fix)
References
git.kernel.org/...c/63fbe0e6413279d5ea5842e2423e351ded547683
git.kernel.org/...c/719fcdf29051f7471d5d433475af76219019d33d
git.kernel.org/...c/1aa319e0f12d2d761a31556b82a5852c98eb0bea
git.kernel.org/...c/ee0aace5f844ef59335148875d05bec8764e71e8
