CVE-2026-74495Critical· 9.8▾ MidnightIn 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 …
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.5%
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.
Linux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < e42b7225c45f57b42306b80cdd3bda202bae7293Linux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < e3ed89c257f6361f13df23023cd10ace830330adLinux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < 56726ff12cb6759ab90d6f5332c2377aeca7d249Linux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < 31089f4eab42e0fc248ec80c26f9b0bad59ba4ccLinux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < bc25d56c03e41c10bc4b40e99ca5d7b941675c04Linux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < 845a9cdd9b03b7b6fa8de3ee80579780350a7f65Linux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < df07003b5a6c6c9fce60d765d6a3da815a74c41cLinux >= c1fa347f20f17f14a4a1575727fa24340e8a9117 < 0565052b7e2f436b7f1541f4849da96dc0aa7a0eLinux 2.6.33Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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