CVE-2026-74495 | BDVDB-2026-360213 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: igbvf: Fix leak in TX DMA error cleanup If an error is encountered while mapping TX buffers, the driver should unmap any buffers already mapped for that skb. Because count is incremented before each frag mapping, it will always match the correct number of unmappings needed when dma_error is reached. Decrementing count before the while loop in dma_error causes an off-by-one error. If any mapping was successful before an unsuccessful mapping, exactly one DMA mapping (the head) would leak. This bug was introduced by a 2010 fix for an endless loop in dma_error. All other affected drivers have already been fixed.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/e42b7225c45f57b42306b80cdd3bda202bae7293
- https://git.kernel.org/stable/c/e3ed89c257f6361f13df23023cd10ace830330ad
- https://git.kernel.org/stable/c/56726ff12cb6759ab90d6f5332c2377aeca7d249
- https://git.kernel.org/stable/c/31089f4eab42e0fc248ec80c26f9b0bad59ba4cc
- https://git.kernel.org/stable/c/bc25d56c03e41c10bc4b40e99ca5d7b941675c04
- https://git.kernel.org/stable/c/845a9cdd9b03b7b6fa8de3ee80579780350a7f65
- https://git.kernel.org/stable/c/df07003b5a6c6c9fce60d765d6a3da815a74c41c
- https://git.kernel.org/stable/c/0565052b7e2f436b7f1541f4849da96dc0aa7a0e
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.