CVE-2026-68449
CVE CVE-2026-68449EUVD EUVD-2026-57055Published 2026-08-12T00:51:47.000ZLast changed 2026-08-19T16:35:43.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning The hand-rolled bit-scanning loop in the NCQ completion path has an infinite loop bug. When tag_mask has only high bits set (e.g. 0x80000000), the inner while loop left-shifts tag_mask until it overflows to 0. At that point !(0 & 1) is always true and 0 <<= 1 stays 0, causing an infinite loop in hardirq context with a spinlock held. Replace the open-coded bit-scanning with __ffs() which correctly finds the least significant set bit and is bounded by the width of the argument.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 62936009f35a6659cc3ebe0d90c754182d60da73 <29b916d3556bd12a95be7c56ca391b8cd572f8be; 62936009f35a6659cc3ebe0d90c754182d60da73 <c2130f6553f4a5cbdc259de069600117a995f197; 62936009f35a6659cc3ebe0d90c754182d60da73 <8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80; 62936009f35a6659cc3ebe0d90c754182d60da73 <ea9fa4dabe476f85fe73df30a6ab61a23c22fda4; patch: 5.10.265; patch: 0; 62936009f35a6659cc3ebe0d90c754182d60da73 <1842d45f461a78988254631893329bdf4596e954; patch: 6.18.42; patch: 6.6.148; 62936009f35a6659cc3ebe0d90c754182d60da73 <4c6e64cae2b2dab32ad9099faa339f6a72c0ce16; patch: 7.1.6; patch: 7.2; 2.6.36; patch: 5.15.216; patch: 6.12.101; 62936009f35a6659cc3ebe0d90c754182d60da73 <d72e8089dc332ac48293512ef0de77cbe0e04d25
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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