LoongArch: Increase ARCH_DMA_MINALIGN up to 16
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Increase ARCH_DMA_MINALIGN up to 16 ARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices (such as APBDMA) require 16 bytes alignment. When the data buffer length is too small, the hardware may make an error writing cacheline. Thus, it is dangerous to allocate a small memory buffer for DMA. It's always safe to define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc() need small memory objects). Therefore, just increase it to 16.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.19 and later | 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2, 6.15 | Patch available | CNA |
- Linux VendorLinux Affected 5.19 and later Fixed in 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2, 6.15 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.19 to before 6.1.134; 6.2 to before 6.6.87; 6.7 to before 6.12.23; 6.13 to before 6.13.11; 6.14 to before 6.14.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.19 to before 6.1.134; 6.2 to before 6.6.87; 6.7 to before 6.12.23; 6.13 to before 6.13.11; 6.14 to before 6.14.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2, 6.15
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-22049
- 2026-10-03 Alias added: GHSA-q8p5-jh8j-ww29
- 2026-11-07 Affected versions changed · Red Hat
References
Patch 6
- https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a
- https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e
- https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82
- https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f
- https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82
- https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720
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Sources
- CVE-2025-22049 · CVE Program
- CVE-2025-22049 · NVD
- FIRST EPSS
- GHSA-q8p5-jh8j-ww29 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-22049 · Red Hat security data · CC BY 4.0
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