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Vulnerability Details CVE-2026-53303

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 6.9%
CVSS Severity
CVSS v3 Score 7.1
Products affected by CVE-2026-53303


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