CVE-2024-44949
parisc: fix a possible DMA corruption
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.
INFO
Published Date :
Sept. 4, 2024, 7:15 p.m.
Last Modified :
Nov. 3, 2025, 11:15 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the affected Linux kernel packages.
- Upgrade the linux-config packages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-44949.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-44949 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-44949
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-44949 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-44949 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jan. 24, 2025
Action Type Old Value New Value Removed Reference https://git.kernel.org/stable/c/3dfd8991ad33b10c2fb027a4cfcf57579fa786c1 Removed Reference https://git.kernel.org/stable/c/dadac97f066a67334268132c1e2d0fd599fbcbec -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 19, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3dfd8991ad33b10c2fb027a4cfcf57579fa786c1 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 14, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/dadac97f066a67334268132c1e2d0fd599fbcbec -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 02, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/00baca74fb5879e5f9034b6156671301f500f8ee -
Initial Analysis by [email protected]
Oct. 09, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f No Types Assigned https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f Patch Changed Reference Type https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f No Types Assigned https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f Patch Changed Reference Type https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f No Types Assigned https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.6.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.5 *cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 04, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f [No types assigned]