{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53303","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.397Z","datePublished":"2026-06-26T19:40:59.383Z","dateUpdated":"2026-06-26T19:40:59.383Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-26T19:40:59.383Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()\n\nIn f2fs_sbi_show(), the extension_list, extension_count and\nhot_ext_count are read without holding sbi->sb_lock. If a concurrent\nsysfs store modifies the extension list via f2fs_update_extension_list(),\nthe show path may read inconsistent count and array contents, potentially\nleading to out-of-bounds access or displaying stale data.\n\nFix this by holding sb_lock around the entire extension list read\nand format operation."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/sysfs.c"],"versions":[{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"d3ff0c121bbaef026df6248ab7ef6f0b068b0647","status":"affected","versionType":"git"},{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"cea15f66b7b68b2c50943a6660e0692c6635e4eb","status":"affected","versionType":"git"},{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"4b3a1bf4c2ffd4c9595d900ead78c9035894a025","status":"affected","versionType":"git"},{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"d0e877810baf613b018fd9747440b9d4d9db1428","status":"affected","versionType":"git"},{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e","status":"affected","versionType":"git"},{"version":"b6a06cbbb5f7fd03589cff9178314af04c568826","lessThan":"5909bedbed38c558bee7cb6758ceedf9bc3a9194","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/sysfs.c"],"versions":[{"version":"4.17","status":"affected"},{"version":"0","lessThan":"4.17","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.141","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.91","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647"},{"url":"https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4eb"},{"url":"https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025"},{"url":"https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428"},{"url":"https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e"},{"url":"https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194"}],"title":"f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()","x_generator":{"engine":"bippy-1.2.0"}}}}