CVE-2024-26947: Linux kernel · ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 16:33 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 1 May 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Linux Linux | Affected
| Fixed in– |
AI-suggested
A fix has been implemented in the Linux kernel to check the PG_reserved flag for folios reserved for no-mapping addresses, preventing the kernel panic. Users should update to the fixed kernel versions or apply the relevant patches once available. Since the affected versions are 5.4.167 and 5.10.87, upgrading beyond these versions where the fix is included is recommended.
Description
CVE-2024-26947 is a vulnerability in the Linux kernel affecting ARM architectures where a change in the pfn_valid() function semantics caused crashes when handling reserved but unmapped memory addresses. The issue leads to kernel panics during certain memory mapping operations, such as those triggered by uio tests. The fix involves checking if the page is marked PG_reserved to prevent invalid memory access.
References
- git.kernel.org/stable/c/ed95b1e88174566de3dc81d94399aacf2c9dfba4 (opens in a new tab)
- git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff (opens in a new tab)
- git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7 (opens in a new tab)
- git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512 (opens in a new tab)
- git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc (opens in a new tab)