CVE-2023-53569

linux: In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount Ch...

CVE-2023-53569 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53569, released October 4, 2025. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
4th percentile

In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount Check that log of block size stored in the superblock has sensible value. Otherwise the shift computing the block size can overflow leading to undefined behavior.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 6.1.37-1 DEBIAN-CVE-2023-53569 Oct 4, 2025
linux · Debian 13.5 (trixie) 6.3.7-1 DEBIAN-CVE-2023-53569 Oct 4, 2025
linux · Debian 14 6.3.7-1 DEBIAN-CVE-2023-53569 Oct 4, 2025

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