{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31447","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.091Z","datePublished":"2026-04-22T13:53:43.467Z","dateUpdated":"2026-05-11T22:08:53.131Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:08:53.131Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: reject mount if bigalloc with s_first_data_block != 0\n\nbigalloc with s_first_data_block != 0 is not supported, reject mounting\nit."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/super.c"],"versions":[{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"5ad6d994255e27a3254079dfb50ca861fc31f2d0","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"3a926957cc95899ef88529710836edadc03c71a1","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"7b58c110b4e1f028eb38eec9ed3555e9be81c8b0","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"b77de3fceafbb39f30e4ff5dc986f863d5456417","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"d787d3ae96648dc14a3b7ca8fde817177e82c1c7","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"ad1f6d608f33f59d21a3d025615d6786a6443998","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"7d5b04290156c3fc316eecc86a4f9d201ab7d44a","status":"affected","versionType":"git"},{"version":"281b59959707dfae03ce038cdf231bf4904e170c","lessThan":"3822743dc20386d9897e999dbb990befa3a5b3f8","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/ext4/super.c"],"versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.131","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.80","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.21","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.11","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"3.2","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0"},{"url":"https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1"},{"url":"https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0"},{"url":"https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417"},{"url":"https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7"},{"url":"https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998"},{"url":"https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a"},{"url":"https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8"}],"title":"ext4: reject mount if bigalloc with s_first_data_block != 0","x_generator":{"engine":"bippy-1.2.0"}}}}