{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99277", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.405Z", "datePublished": "2026-11-07T14:08:46.710Z", "dateUpdated": "2026-11-07T14:08:46.710Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-07T14:08:46.710Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: hold a connection reference for each session channel\n\nksmbd_session_unregister() removes a session from the global and per-\nconnection tables before dropping the table reference. A concurrent\nreference holder can keep the session and its channel list alive after\nthose removals.\n\nConnection cleanup can no longer find the unpublished session to remove its\nchannels. Since a channel only stores a raw conn pointer, the connection\ncan be freed while another session reference holder is still accessing it,\nfor example during SMB3.1.1 binding or a procfs read.\n\nTake a connection reference when registering a channel and release it on\ninsertion failure, channel removal, or final session destruction. Keep the\nchannels and signing keys until the session is destroyed so a response can\nstill be signed after the session has been unregistered."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/mgmt/user_session.c", "fs/smb/server/smb2pdu.c"], "versions": [{"version": "d7fd1f98607f2cd358e583f9548bdf0173090a86", "lessThan": "4b333aed69cfc2c8687b86b6a4364a0dffc16dd8", "status": "affected", "versionType": "git"}, {"version": "d7fd1f98607f2cd358e583f9548bdf0173090a86", "lessThan": "add8d7fb04efe564193df73581889c62fc0016f1", "status": "affected", "versionType": "git"}, {"version": "c99ea7855124ca1428a1e59c2b4590aaef34eacf", "status": "affected", "versionType": "git"}, {"version": "7.2.8", "lessThan": "7.3", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/mgmt/user_session.c", "fs/smb/server/smb2pdu.c"], "versions": [{"version": "7.3", "status": "affected"}, {"version": "0", "lessThan": "7.3", "status": "unaffected", "versionType": "semver"}, {"version": "7.3.2", "lessThanOrEqual": "7.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.4-rc1", "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": "7.3", "versionEndExcluding": "7.3.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.3", "versionEndExcluding": "7.4-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.2.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4b333aed69cfc2c8687b86b6a4364a0dffc16dd8"}, {"url": "https://git.kernel.org/stable/c/add8d7fb04efe564193df73581889c62fc0016f1"}], "title": "ksmbd: hold a connection reference for each session channel", "x_generator": {"engine": "bippy-1.2.0"}}}}