CVE-2026-68449
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | ea9fa4dabe476f85fe73df30a6ab61a23c22fda4 | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | d72e8089dc332ac48293512ef0de77cbe0e04d25 | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | 4c6e64cae2b2dab32ad9099faa339f6a72c0ce16 | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | 8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80 | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | 1842d45f461a78988254631893329bdf4596e954 | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | 29b916d3556bd12a95be7c56ca391b8cd572f8be | Unavailable | None listed |
| 62936009f35a6659cc3ebe0d90c754182d60da73 | affected | git | c2130f6553f4a5cbdc259de069600117a995f197 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.36 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.36 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.6.148 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.101 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.42 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.6 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |