CVE-2026-72107
In the Linux kernel, the following vulnerability has been resolved: dm era: fix out-of-bounds memory access for non-zero start sector dm-era tracks writes in target-relative blocks, but era_map() calculates the writeset block before applying the target offset. Tables with a non-zero start sector can therefore pass an absolute mapped-device block to metadata_current_marked(). If the absolute block is beyond the current writeset size, writeset_marked() tests past the end of the in-core bitset. KASAN reports this as a vmalloc-out-of-bounds access. Apply the target offset before calculating the era block so writeset lookups use the target-relative block number.
Affected versions
Linux kernel versions
3.15
and later are affected. Fixed in
5.10.261,
5.15.212,
6.1.178,
6.6.145,
6.12.97,
6.18.40,
7.1.5,
7.2-rc3
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-72107?
CVE-2026-72107 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.15 onward and has been patched in 5.10.261, 5.15.212, 6.1.178 and others. CVE-2026-72107 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-2026-72107?
Yes. CVE-2026-72107 has been patched. Fixed versions include 5.10.261, 5.15.212, 6.1.178 and others. If you are running Linux kernel 3.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72107 actively exploited?
No. CVE-2026-72107 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.