{"id":"CVE-2022-50020","state":"PUBLISHED","title":"ext4: avoid resizing to a partial cluster size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid resizing to a partial cluster size\n\nThis patch avoids an attempt to resize the filesystem to an\nunaligned cluster boundary.  An online resize to a size that is not\nintegral to cluster size results in the last iteration attempting to\ngrow the fs by a negative amount, which trips a BUG_ON and leaves the fs\nwith a corrupted in-memory superblock.","publishedAt":"2025-06-18T11:01:24.227Z","updatedAt":"2026-05-11T19:11:14.053Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"7bdfb01fc5f6b3696728aeb527c50386e0ee09a1","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"a6805b3dcf5cd41f2ae3a03dca43411135b99849","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"80288883294c5b4ed18bae0d8bd9c4a12f297074","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"72b850a2a996f72541172e7cf686d54a2b29bcd8","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"0082e99a9074ff88eff729c70c93454c8588d8e1","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.256","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"]}],"references":["https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1","https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849","https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074","https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8","https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1","https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50020.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50020","state":"PUBLISHED","datePublished":"2025-06-18T11:01:24.227Z","dateUpdated":"2026-05-11T19:11:14.053Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.393Z"},"containers":{"cna":{"title":"ext4: avoid resizing to a partial cluster size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid resizing to a partial cluster size\n\nThis patch avoids an attempt to resize the filesystem to an\nunaligned cluster boundary.  An online resize to a size that is not\nintegral to cluster size results in the last iteration attempting to\ngrow the fs by a negative amount, which trips a BUG_ON and leaves the fs\nwith a corrupted in-memory superblock."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"7bdfb01fc5f6b3696728aeb527c50386e0ee09a1","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"a6805b3dcf5cd41f2ae3a03dca43411135b99849","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"80288883294c5b4ed18bae0d8bd9c4a12f297074","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"72b850a2a996f72541172e7cf686d54a2b29bcd8","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"0082e99a9074ff88eff729c70c93454c8588d8e1","versionType":"git"},{"version":"d77147ff443b255d82c907a632c825b2cc610b10","status":"affected","lessThan":"69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.256","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1"},{"url":"https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849"},{"url":"https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074"},{"url":"https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8"},{"url":"https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1"},{"url":"https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:11:14.053Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.256"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.138"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}