Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.6.46 |
References
- https://git.kernel.org/stable/c/00baca74fb5879e5f9034b6156671301f500f8ee
- https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9fPatch
- https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7fPatch
- https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240fPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
FAQ
What is CVE-2024-44949?
CVE-2024-44949 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 unrela...
How severe is CVE-2024-44949?
CVE-2024-44949 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-44949?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.