CVE-2026-68435: Linux kernel · LoongArch: Fix address space mismatch in kexec command line lookup
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in eaa908d8d523b0ab75dab5ebd6662e70af5e5d7e : update Linux kernel when convenient.
Data as of 26 Oct 2026, 21:25 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in eaa908d8d523b0ab75dab5ebd6662e70af5e5d7e, a94d6726ec8680a2b0c453fc782a543f68a1ea06, 485ed44db5694d8d2e5027f63ad608e705286f30 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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– |
AI-suggested
A fix is available and has been applied in the Linux kernel source. Users should update to the fixed kernel versions or apply the relevant patches to resolve the address space mismatch in the kexec command line lookup for LoongArch. No additional mitigation steps are indicated.
Description
A vulnerability in the Linux kernel's LoongArch architecture involves an address space mismatch during the kexec command line lookup. The issue arises because the kernel dereferences a user-space pointer directly in kernel context, which is incorrect and flagged by static analysis. The fix involves copying a prefix of each segment from user space into a kernel buffer before comparison, preventing unsafe user pointer dereferencing.
References
- git.kernel.org/stable/c/3b71f51fa3a247921408879eab2ddee82da8a980 (opens in a new tab)
- git.kernel.org/stable/c/eaa908d8d523b0ab75dab5ebd6662e70af5e5d7e (opens in a new tab)
- git.kernel.org/stable/c/a94d6726ec8680a2b0c453fc782a543f68a1ea06 (opens in a new tab)
- git.kernel.org/stable/c/7a54e0cbaad4a5a09e7cc7a4f05d181048e98ca7 (opens in a new tab)
- git.kernel.org/stable/c/485ed44db5694d8d2e5027f63ad608e705286f30 (opens in a new tab)