CVE-2024-26783: Linux kernel · mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 10 Nov 2026, 14:50 UTC
Rated Medium 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 4 Apr 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 10 Nov 2026.
What to do
AI-suggested
A fix has been implemented in the Linux kernel to check the zone index before calling wakeup_kswapd(), preventing the invalid call. Users should update to the fixed kernel version once available.
Description
CVE-2024-26783 is a vulnerability in the Linux kernel's memory management subsystem where the function wakeup_kswapd() is called with an incorrect zone index (-1) on NUMA systems lacking local memory on a node. This bug causes kernel oops and page faults, leading to system instability. The issue occurs specifically when NUMA balancing is enabled and a NUMA node has no managed zones. The flaw has been fixed by adding a check on the zone index before calling wakeup_kswapd().
References
- git.kernel.org/stable/c/e5ec1c24e71dbf144677a975d6ba91043c2193db (opens in a new tab)
- git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e (opens in a new tab)
- git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080 (opens in a new tab)
- git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/08/msg00010.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)