{"id":"CVE-2026-98453","state":"PUBLISHED","title":"smb: client: close handle after create-context parsing failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts.  If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count.","publishedAt":"2026-10-18T15:15:03.262Z","updatedAt":"2026-10-30T12:38:12.139Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"13fb0fc4917621f3dfa285a27eaf7151d770b5e5","status":"affected","lessThan":"d4c05b5cb0a3132453e36a300d45de44bf6783c4","versionType":"git"},{"version":"890bc4fac3c0973a49cac35f634579bebba7fe48","status":"affected","lessThan":"ee61f1dc516d97afa79908140d0a8c556c2fe90c","versionType":"git"},{"version":"1ae3c59355dc9882e09c020afe8ffbd895ad0f29","status":"affected","lessThan":"007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd","versionType":"git"},{"version":"17a0f64cc02d4972e21c733d9f21d1c512963afa","status":"affected","lessThan":"eaa97a196a107d4ef8775df2248181624151812e","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"80c67cc71d32ccafc89a29b669243b40d81b930f","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"f09875ff901e933e7b22c913daf51d21e9d93a45","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"566820af017e81497fb5e9d3ad6e7ffe2828bc8b","versionType":"git"},{"version":"6726429c18c62dbf5e96ebbd522f262e016553fb","status":"affected","versionType":"git"},{"version":"5.10.211","status":"affected","lessThan":"5.10.273","versionType":"semver"},{"version":"5.15.150","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"6.1.79","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.8","status":"affected","lessThan":"6.6.160","versionType":"semver"},{"version":"5.4.277","status":"affected","lessThan":"5.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/smb2pdu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/smb2pdu.c"]}],"references":["https://git.kernel.org/stable/c/d4c05b5cb0a3132453e36a300d45de44bf6783c4","https://git.kernel.org/stable/c/ee61f1dc516d97afa79908140d0a8c556c2fe90c","https://git.kernel.org/stable/c/007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd","https://git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e","https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f","https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45","https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb","https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b"],"weaknesses":[],"ingestedAt":"2026-10-30T12:58:04.520Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98453.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98453","state":"PUBLISHED","datePublished":"2026-10-18T15:15:03.262Z","dateUpdated":"2026-10-30T12:38:12.139Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.350Z"},"containers":{"cna":{"title":"smb: client: close handle after create-context parsing failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts.  If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"13fb0fc4917621f3dfa285a27eaf7151d770b5e5","status":"affected","lessThan":"d4c05b5cb0a3132453e36a300d45de44bf6783c4","versionType":"git"},{"version":"890bc4fac3c0973a49cac35f634579bebba7fe48","status":"affected","lessThan":"ee61f1dc516d97afa79908140d0a8c556c2fe90c","versionType":"git"},{"version":"1ae3c59355dc9882e09c020afe8ffbd895ad0f29","status":"affected","lessThan":"007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd","versionType":"git"},{"version":"17a0f64cc02d4972e21c733d9f21d1c512963afa","status":"affected","lessThan":"eaa97a196a107d4ef8775df2248181624151812e","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"80c67cc71d32ccafc89a29b669243b40d81b930f","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"f09875ff901e933e7b22c913daf51d21e9d93a45","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb","versionType":"git"},{"version":"af1689a9b7701d9907dfc84d2a4b57c4bc907144","status":"affected","lessThan":"566820af017e81497fb5e9d3ad6e7ffe2828bc8b","versionType":"git"},{"version":"6726429c18c62dbf5e96ebbd522f262e016553fb","status":"affected","versionType":"git"},{"version":"5.10.211","status":"affected","lessThan":"5.10.273","versionType":"semver"},{"version":"5.15.150","status":"affected","lessThan":"5.15.224","versionType":"semver"},{"version":"6.1.79","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.8","status":"affected","lessThan":"6.6.160","versionType":"semver"},{"version":"5.4.277","status":"affected","lessThan":"5.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/smb2pdu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/smb2pdu.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d4c05b5cb0a3132453e36a300d45de44bf6783c4"},{"url":"https://git.kernel.org/stable/c/ee61f1dc516d97afa79908140d0a8c556c2fe90c"},{"url":"https://git.kernel.org/stable/c/007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd"},{"url":"https://git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e"},{"url":"https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f"},{"url":"https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45"},{"url":"https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb"},{"url":"https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:38:12.139Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.211","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.150","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.79","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.8","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExc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