What’s Vulnerable › Vulnerabilities

CVE-2026-74279: crypto: cavium/cpt - fix DMA cleanup using wrong loop index

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-16

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: cavium/cpt - fix DMA cleanup using wrong loop index The sg_cleanup error path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.

Affected products

• Linux kernel: 4.11 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/23c6174e48f66fc10b998b0acdb406cb0caf5c80
• https://git.kernel.org/stable/c/23d3a7e896a1fe2d7a6bcb42f093948b79f8a198
• https://git.kernel.org/stable/c/28141f95ae93b18f9bfde953cb787fcb151fb9da
• https://git.kernel.org/stable/c/3b8a1e1f4e4071a62b20374028744e8cc8310d48
• https://git.kernel.org/stable/c/8afd1007ef79898a6e010eaade97097e49405fce
• https://git.kernel.org/stable/c/9dbf173bd32d5f81b005008b682bfb50aa093455
• https://git.kernel.org/stable/c/d319b83b97b3585550d9ae592dfa78c755b6129e
• https://git.kernel.org/stable/c/fb4d57b83356d4bd411b45ede3024e0ff42c9b5e

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