Improper locking in Linux kernel - CVE-2024-40918
Published: July 13, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU94280
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-40918
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the PTR_PAGE_ALIGN_DOWN(), __flush_cache_page(), flush_icache_pages(), pte_needs_flush(), flush_dcache_folio(), purge_kernel_dcache_page_asm(), copy_user_highpage(), __flush_tlb_range(), flush_cache_range(), flush_anon_page() and invalidate_kernel_vmap_range() functions in arch/parisc/kernel/cache.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2024-40918
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/5bf196f1936bf93df31112fbdfb78c03537c07b0
- https://git.kernel.org/stable/c/d66f2607d89f760cdffed88b22f309c895a2af20
- https://git.kernel.org/stable/c/72d95924ee35c8cd16ef52f912483ee938a34d49
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.35