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VulnerabilityPublished Updated

CVE-2026-43010: Linux kernel · bpf: Reject sleepable kprobe_multi programs at attach time

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f952157e695fd434bdc05af63a703bb082a78717 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 12:49 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
Patch
Available – fixed in f952157e695fd434bdc05af63a703bb082a78717, eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8, dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  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 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < f952157e695fd434bdc05af63a703bb082a78717
Fixed in
  • f952157e695fd434bdc05af63a703bb082a78717
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8
Fixed in
  • eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3
Fixed in
  • dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < d97b19fe5265f7901b2c862f88a4eb1b129a0b61
Fixed in
  • d97b19fe5265f7901b2c862f88a4eb1b129a0b61
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < c2b5e13dee9cc83e664daf4c13077dcc618a44e9
Fixed in
  • c2b5e13dee9cc83e664daf4c13077dcc618a44e9
LinuxLinuxAffected
  • ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < 89327ed787746a7aa4db3c97f91d2e294228932b
Fixed in
  • 89327ed787746a7aa4db3c97f91d2e294228932b

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version that includes the patch rejecting sleepable kprobe_multi programs at attach time. No additional mitigation is required beyond applying the official fix.

Description

A vulnerability in the Linux kernel's BPF subsystem allowed sleepable kprobe_multi programs to be attached, which is invalid because kprobe.multi programs run in atomic/RCU context and cannot sleep. This flaw could cause kernel crashes due to sleeping functions being called from invalid contexts. The issue has been fixed by rejecting sleepable programs at attach time.

References

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