PT-2024-7184 · Linux+3 · Linux Kernel+3
Mikulas Patocka
·
Published
2024-07-29
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Updated
2026-03-14
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CVE-2024-44949
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a possible DMA corruption in the Linux kernel, specifically in the parisc architecture. The problem arises because the ARCH DMA MINALIGN value was defined as 16, which is too small, allowing two unrelated 16-byte allocations to share a cache line. If one allocation is written using DMA and the other using cached write, the value written with DMA may be corrupted. The kernel has been updated to change ARCH DMA MINALIGN to 128 on PA20 and 32 on PA1.1, which is the largest possible cache line size. This change allows the kernel to tune slab cache parameters dynamically based on the detected cache line size.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Debian
Linux Kernel
Red Os