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.
from 62936009f35a6659cc3ebe0d90c754182d60da73 before ea9fa4dabe476f85fe73df30a6ab61a23c22fda4; from 62936009f35a6659cc3ebe0d90c754182d60da73 before d72e8089dc332ac48293512ef0de77cbe0e04d25; 62936009f35a6659cc3ebe0d90c754182d60da73 builds before 4c6e64cae2b2dab32ad9099faa339f6a72c0ce16; 62936009f35a6659cc3ebe0d90c754182d60da73 builds before 8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80; 62936009f35a6659cc3ebe0d90c754182d60da73 builds before 1842d45f461a78988254631893329bdf4596e954; 62936009f35a6659cc3ebe0d90c754182d60da73 builds before 29b916d3556bd12a95be7c56ca391b8cd572f8be; from 62936009f35a6659cc3ebe0d90c754182d60da73 before c2130f6553f4a5cbdc259de069600117a995f197
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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