CVE-2026-43129: Linux kernel · ima: verify the previous kernel's IMA buffer lies in addressable RAM
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f11d7d088f5ed54b31c6735854c12845eb60eb4a : update Linux kernel when convenient.
Data as of 30 Oct 2026, 12:48 UTC
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 f11d7d088f5ed54b31c6735854c12845eb60eb4a, 43308106a1762b72f3b20a44b75b2df5cb25b77b, 5366ec7d2f793ce703c403d7fd4c25a3db365b9d +3
Exploitation evidence
Disclosed: evidence found.
CVE published 6 May 2026
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
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
This vulnerability has been fixed in the Linux kernel version 6.0. Users and administrators should update to the fixed kernel version or later to prevent this issue. No additional mitigation steps are required beyond applying the official patch.
Description
A vulnerability in the Linux kernel's Integrity Measurement Architecture (IMA) was fixed to ensure that the previous kernel's IMA buffer lies within addressable RAM when booting a second-stage kernel via kexec with memory limits. Without this check, the kernel could encounter a page fault accessing an invalid memory address during early restore on x86_64 systems.
References
- git.kernel.org/stable/c/5bfa1941ec40d5bed68f3e3f22ea13aff9c6d67a (opens in a new tab)
- git.kernel.org/stable/c/43308106a1762b72f3b20a44b75b2df5cb25b77b (opens in a new tab)
- git.kernel.org/stable/c/f11d7d088f5ed54b31c6735854c12845eb60eb4a (opens in a new tab)
- git.kernel.org/stable/c/9e1f51c1ad57cc76a0e8b5eb27038f8973fff4fa (opens in a new tab)
- git.kernel.org/stable/c/5366ec7d2f793ce703c403d7fd4c25a3db365b9d (opens in a new tab)
- git.kernel.org/stable/c/10d1c75ed4382a8e79874379caa2ead8952734f9 (opens in a new tab)