parisc: fix a possible DMA corruption
Summary
| CVE | CVE-2024-44949 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-09-04 19:15:30 UTC |
| Updated | 2026-08-04 11:20:02 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: NVD-CWE-noinfo
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected a01fece2e4185ac173abd16d10304d73d47ebf00 00baca74fb5879e5f9034b6156671301f500f8ee git | Not specified |
| CNA | Linux | Linux | affected a01fece2e4185ac173abd16d10304d73d47ebf00 642a0b7453daff0295310774016fcb56d1f5bc7f git | Not specified |
| CNA | Linux | Linux | affected a01fece2e4185ac173abd16d10304d73d47ebf00 533de2f470baac40d3bf622fe631f15231a03c9f git | Not specified |
| CNA | Linux | Linux | affected a01fece2e4185ac173abd16d10304d73d47ebf00 7ae04ba36b381bffe2471eff3a93edced843240f git | Not specified |
| CNA | Linux | Linux | affected 4.4 | Not specified |
| CNA | Linux | Linux | unaffected 4.4 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.119 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.46 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.10.5 6.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.11 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/00baca74fb5879e5f9034b6156671301f500f8ee | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| lists.debian.org/debian-lts-announce/2025/01/msg00001.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.