CVE-2026-72471
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: prevent potential lcn remains uninitialized The target VCN being sought was not found within runs[0], causing run_lookup() to return false. This causes run_lookup_entry() to return false, which in turn results in a len value of 0, and the new parameter passed to attr_data_get_block() is NULL. Collectively, these factors ultimately cause attr_data_get_block_locked() to exit prematurely without initializing lcn, thereby triggering [1]. To prevent [1], the clen check within ni_seek_data_or_hole() has been moved to occur before the lcn check. [1] BUG: KMSAN: uninit-value in ni_seek_data_or_hole+0x24f/0x5f0 fs/ntfs3/frecord.c:2862 ni_seek_data_or_hole+0x24f/0x5f0 fs/ntfs3/frecord.c:2862 ntfs_llseek+0x22a/0x4a0 fs/ntfs3/file.c:1530 vfs_llseek fs/read_write.c:391 [inline]
Affected versions
Linux kernel versions
7.0
and later are affected. Fixed in
7.1.5,
7.2-rc1
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-72471?
CVE-2026-72471 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 7.0 onward and has been patched in 7.1.5 and 7.2-rc1. CVE-2026-72471 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-2026-72471?
Yes. CVE-2026-72471 has been patched. Fixed versions include 7.1.5 and 7.2-rc1. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72471 actively exploited?
No. CVE-2026-72471 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.