Not yet scoredPublished Sep 17, 2026

CVE-2026-90420nilfs2: fix infinite loop in nilfs_clean_segments()

Updated under an hour ago (Oct 27, 2026, 12:20 PM ET)

This data is behind schedule: last updated Oct 27, 2026, 10:23 AM ET. We are working on it.Behind: National Vulnerability Database (CVE API 2.0, CPE API 2.0).

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfs_clean_segments() syzbot reported a hung task in nilfs_transaction_begin(). This occurs because the cleaner ioctl falls into an infinite loop if nilfs_segctor_construct() repeatedly returns -EROFS (e.g. the device is remounted as read-only after an I/O error). Currently in nilfs_clean_segments(), if err is non-zero, it logs the error and sleeps but doesn't abort when it encounters a terminal error like -EROFS. This causes the thread to loop forever. Fix this by breaking out of the loop if nilfs_segctor_construct() returns -EROFS. This matches the behaviour in nilfs_segctor_write_out(), which also handles -EROFS.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 before e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3; from 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 before 217b967ad7887a3e1ebc08f46f6484e081acd4b4; 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 builds before 3bcdbdaac884a4baa59716cf9bd9470c75276e2d; from 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 before d7afca8e4efbf4c455b4663c29ae59fde2f1b671; from 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 before c07e5ad6539e7e9350d5c65cbf8adb69d1711b15; 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 builds before 1fc6df85b4954b6fda9c351843aaca3c06f66d8d; 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 builds before 8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8; from 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 before ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18	CNA record

References

References

https://git.kernel.org/stable/c/e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3
https://git.kernel.org/stable/c/217b967ad7887a3e1ebc08f46f6484e081acd4b4
https://git.kernel.org/stable/c/3bcdbdaac884a4baa59716cf9bd9470c75276e2d
https://git.kernel.org/stable/c/d7afca8e4efbf4c455b4663c29ae59fde2f1b671
https://git.kernel.org/stable/c/c07e5ad6539e7e9350d5c65cbf8adb69d1711b15
https://git.kernel.org/stable/c/1fc6df85b4954b6fda9c351843aaca3c06f66d8d
https://git.kernel.org/stable/c/8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8
https://git.kernel.org/stable/c/ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.