{"id":"CVE-2022-50148","state":"PUBLISHED","title":"kernfs: fix potential NULL dereference in __kernfs_remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix potential NULL dereference in __kernfs_remove\n\nWhen lockdep is enabled, lockdep_assert_held_write would\ncause potential NULL pointer dereference.\n\nFix the following smatch warnings:\n\nfs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)","publishedAt":"2025-06-18T11:03:08.462Z","updatedAt":"2026-05-11T19:13:45.359Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"b871986d9d3071f5082664ac274d93f08db257cd","versionType":"git"},{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"4a9f35b8729c5bf13ea671c908c17ed74c48fc50","versionType":"git"},{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"72b5d5aef246a0387cefa23121dd90901c7a691a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/kernfs/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.18.18","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19.2","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/kernfs/dir.c"]}],"references":["https://git.kernel.org/stable/c/b871986d9d3071f5082664ac274d93f08db257cd","https://git.kernel.org/stable/c/4a9f35b8729c5bf13ea671c908c17ed74c48fc50","https://git.kernel.org/stable/c/72b5d5aef246a0387cefa23121dd90901c7a691a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50148.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50148","state":"PUBLISHED","datePublished":"2025-06-18T11:03:08.462Z","dateUpdated":"2026-05-11T19:13:45.359Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.424Z"},"containers":{"cna":{"title":"kernfs: fix potential NULL dereference in __kernfs_remove","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix potential NULL dereference in __kernfs_remove\n\nWhen lockdep is enabled, lockdep_assert_held_write would\ncause potential NULL pointer dereference.\n\nFix the following smatch warnings:\n\nfs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"b871986d9d3071f5082664ac274d93f08db257cd","versionType":"git"},{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"4a9f35b8729c5bf13ea671c908c17ed74c48fc50","versionType":"git"},{"version":"393c3714081a53795bbff0e985d24146def6f57f","status":"affected","lessThan":"72b5d5aef246a0387cefa23121dd90901c7a691a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/kernfs/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.18.18","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19.2","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/kernfs/dir.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b871986d9d3071f5082664ac274d93f08db257cd"},{"url":"https://git.kernel.org/stable/c/4a9f35b8729c5bf13ea671c908c17ed74c48fc50"},{"url":"https://git.kernel.org/stable/c/72b5d5aef246a0387cefa23121dd90901c7a691a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:13:45.359Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}