CVE-2026-43445 (GCVE-0-2026-43445)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24
VLAI
Title
e1000/e1000e: Fix leak in DMA error cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: e1000/e1000e: Fix leak in 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 after a successful 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 would leak. In these commits, a faulty while condition caused an infinite loop in dma_error: Commit 03b1320dfcee ("e1000e: remove use of skb_dma_map from e1000e driver") Commit 602c0554d7b0 ("e1000: remove use of skb_dma_map from e1000 driver") Commit c1fa347f20f1 ("e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of unsigned in *_tx_map()") fixed the infinite loop, but introduced the off-by-one error. This issue may still exist in the igbvf driver, but I did not address it in this patch.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 7eaeb778bfaa3b2a804f89321c234d59c74569db (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 0606c24a745bafd1be5d66c48361638cd9cad74b (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 519051c711dfd239ef6e4b28878efee400a035f9 (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 0a1fc25deabab4efce64610e3c449485c4fa8f5f (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < fa5ba9867a55e640df0dc79bf0199770fb043f03 (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 30e87ade8d678c25a8546cf38c0b498fa5cb27d3 (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < 10b5e65959e955a1c8894e0a5413944b5a70204a (git)
Affected: c1fa347f20f17f14a4a1575727fa24340e8a9117 , < e94eaef11142b01f77bf8ba4d0b59720b7858109 (git)
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Linux Linux Affected: 2.6.33
Unaffected: 0 , < 2.6.33 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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