CVE-2026-90419

nilfs2: prevent out-of-bounds read in super root block parsing

CVE-2026-90419 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-90419, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.1
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent out-of-bounds read in super root block parsing super-root inode metadata size is trusted before nilfs_read_inode_common(). Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block size. This prevents malformed filesystem images from making nilfs_read_inode_common() read past the end of the super-root block. [ryusuke: clarify the commit title]

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 6.1.190-1 DEBIAN-CVE-2026-90419 Sep 23, 2026
linux · Debian 13.5 (trixie) 6.12.111-1 DEBIAN-CVE-2026-90419 Sep 23, 2026
linux · Debian 14 7.2.6-1 DEBIAN-CVE-2026-90419 Sep 23, 2026
linux-6.12 · Debian 12.15 (bookworm) 6.12.111-1~deb12u1 DEBIAN-CVE-2026-90419 Sep 23, 2026

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