CVE-2025-68737
In the Linux kernel, the following vulnerability has been resolved: arm64/pageattr: Propagate return value from __change_memory_common The rodata=on security measure requires that any code path which does vmalloc -> set_memory_ro/set_memory_rox must protect the linear map alias too. Therefore, if such a call fails, we must abort set_memory_* and caller must take appropriate action; currently we are suppressing the error, and there is a real chance of such an error arising post commit a166563e7ec3 ("arm64: mm: support large block mapping when rodata=full"). Therefore, propagate any error to the caller.
Affected versions
Linux kernel versions
6.18
and later are affected. Fixed in
6.18.2,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68737 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/3e2fc1e57a5361633a4bf4222640c6bfe41ff8ea
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PatchKernel patch commithttps://git.kernel.org/stable/c/e5efd56fa157d2e7d789949d1d64eccbac18a897
Frequently asked questions
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What is CVE-2025-68737?
CVE-2025-68737 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.2 and 6.19. CVE-2025-68737 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68737?
Yes — CVE-2025-68737 has been patched. Fixed versions include 6.18.2 and 6.19. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68737 actively exploited?
No — CVE-2025-68737 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.