CVE-2026-74495
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0565052b7e2f436b7f1541f4849da96dc0aa7a0e
- https://git.kernel.org/stable/c/31089f4eab42e0fc248ec80c26f9b0bad59ba4cc
- https://git.kernel.org/stable/c/56726ff12cb6759ab90d6f5332c2377aeca7d249
- https://git.kernel.org/stable/c/845a9cdd9b03b7b6fa8de3ee80579780350a7f65
- https://git.kernel.org/stable/c/bc25d56c03e41c10bc4b40e99ca5d7b941675c04
- https://git.kernel.org/stable/c/df07003b5a6c6c9fce60d765d6a3da815a74c41c
- https://git.kernel.org/stable/c/e3ed89c257f6361f13df23023cd10ace830330ad
- https://git.kernel.org/stable/c/e42b7225c45f57b42306b80cdd3bda202bae7293
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.