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VulnerabilityPublished Updated

CVE-2024-26783: Linux kernel · mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 10 Nov 2026, 14:50 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Apr 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

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