CVE-2024-44949parisc: fix a possible DMA corruption
- 7.8HighCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: parisc: fix a possible DMA corruption ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be possible that two unrelated 16-byte allocations share a cache line. If one of these allocations is written using DMA and the other is written using cached write, the value that was written with DMA may be corrupted. This commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 - that's the largest possible cache line size. As different parisc microarchitectures have different cache line size, we define arch_slab_minalign(), cache_line_size() and dma_get_cache_alignment() so that the kernel may tune slab cache parameters dynamically, based on the detected cache line size.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 23 months later
· 23 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected a01fece2e4185ac173abd16d10304d73d47ebf00 – < 00baca74fb5879e5f9034b6156671301f500f8ee
- affected a01fece2e4185ac173abd16d10304d73d47ebf00 – < 642a0b7453daff0295310774016fcb56d1f5bc7f
- affected a01fece2e4185ac173abd16d10304d73d47ebf00 – < 533de2f470baac40d3bf622fe631f15231a03c9f
- affected a01fece2e4185ac173abd16d10304d73d47ebf00 – < 7ae04ba36b381bffe2471eff3a93edced843240f
- affected 4.4
- unaffected < 4.4
- unaffected 6.1.119 – ≤ 6.1.*
- unaffected 6.6.46 – ≤ 6.6.*
- unaffected 6.10.5 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References5
- https://git.kernel.org/stable/c/00baca74fb5879e5f9034b6156671301f500f8ee (opens in a new tab)
- https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f (opens in a new tab)
- https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f (opens in a new tab)
- https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-41203 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-44949)Record last updated .