{"id":"CVE-2024-56729","state":"PUBLISHED","title":"smb: Initialize cfid->tcon before performing network ops","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: Initialize cfid->tcon before performing network ops\n\nAvoid leaking a tcon ref when a lease break races with opening the\ncached directory. Processing the leak break might take a reference to\nthe tcon in cached_dir_lease_break() and then fail to release the ref in\ncached_dir_offload_close, since cfid->tcon is still NULL.","publishedAt":"2024-12-29T11:30:07.181Z","updatedAt":"2026-10-30T12:20:27.814Z","severity":{"score":4.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"269ff24a5b2b58600151e04e964d2043bfe1843c","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"625e2357c8fcfae6e66dcc667dc656fe390bab15","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"4b216c8f9c7d84ef7de33ca60b97e08e03ef3292","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"c353ee4fb119a2582d0e011f66a76a38f5cf984d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/cached_dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.64","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.11","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12.2","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/cached_dir.c"]}],"references":["https://git.kernel.org/stable/c/269ff24a5b2b58600151e04e964d2043bfe1843c","https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15","https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292","https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262","https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-30T12:36:04.432Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/56xxx/CVE-2024-56729.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-56729","state":"PUBLISHED","datePublished":"2024-12-29T11:30:07.181Z","dateUpdated":"2026-10-30T12:20:27.814Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-27T15:00:39.861Z"},"containers":{"cna":{"title":"smb: Initialize cfid->tcon before performing network ops","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: Initialize cfid->tcon before performing network ops\n\nAvoid leaking a tcon ref when a lease break races with opening the\ncached directory. Processing the leak break might take a reference to\nthe tcon in cached_dir_lease_break() and then fail to release the ref in\ncached_dir_offload_close, since cfid->tcon is still NULL."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"269ff24a5b2b58600151e04e964d2043bfe1843c","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"625e2357c8fcfae6e66dcc667dc656fe390bab15","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"4b216c8f9c7d84ef7de33ca60b97e08e03ef3292","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","status":"affected","lessThan":"c353ee4fb119a2582d0e011f66a76a38f5cf984d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/cached_dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.64","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.11","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12.2","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/cached_dir.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/269ff24a5b2b58600151e04e964d2043bfe1843c"},{"url":"https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15"},{"url":"https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292"},{"url":"https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262"},{"url":"https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:20:27.814Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.6.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.11.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.12.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.13"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.7,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-56729","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:57:47.963578Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T20:07:04.657Z"}}]}}}