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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-74495 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0565052b7e2f436b7f1541f4849da96dc0aa7a0e kernel.org
https://git.kernel.org/stable/c/31089f4eab42e0fc248ec80c26f9b0bad59ba4cc kernel.org
https://git.kernel.org/stable/c/845a9cdd9b03b7b6fa8de3ee80579780350a7f65 kernel.org
https://git.kernel.org/stable/c/bc25d56c03e41c10bc4b40e99ca5d7b941675c04 kernel.org
https://git.kernel.org/stable/c/df07003b5a6c6c9fce60d765d6a3da815a74c41c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-74495
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org