138 lines
6.5 KiB
JSON
138 lines
6.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-99276",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.405Z",
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"datePublished": "2026-11-07T14:08:46.432Z",
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"dateUpdated": "2026-11-07T14:08:46.432Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-11-07T14:08:46.432Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: defer connection scavenging while session locks are busy\n\nThe expiration worker holds conn_list_lock for reading while checking\nfor authenticated sessions. Without this change, the check can wait for\nconn->session_lock or sessions_table_lock.\n\nIn destroy_previous_session(), the status updates after\nksmbd_conn_wait_idle_sess() run with both session locks held for\nwriting. Both the KSMBD_SESS_GOOD error path and the\nKSMBD_SESS_NEED_SETUP success path call ksmbd_all_conn_set_status(),\nwhich takes conn_list_lock for reading.\n\nA writer queued on conn_list_lock can block these new read acquisitions.\nThe worker then waits for a session lock held by\ndestroy_previous_session(), which waits behind the writer. The writer\ncannot proceed until the worker releases conn_list_lock.\n\nTry both session locks instead of waiting in the scavenging check. Keep\nthe connection when either lock is busy and let the periodic worker\nretry later."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/smb/server/mgmt/user_session.c"
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],
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"versions": [
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{
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"version": "d7fd1f98607f2cd358e583f9548bdf0173090a86",
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"lessThan": "4e4e8b38994a0b0fc23f00ca6698b469a41abe70",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d7fd1f98607f2cd358e583f9548bdf0173090a86",
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"lessThan": "b4bae7af1154089be87c7475218264fcbfd16d10",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c99ea7855124ca1428a1e59c2b4590aaef34eacf",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7.2.8",
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"lessThan": "7.3",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/smb/server/mgmt/user_session.c"
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],
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"versions": [
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{
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"version": "7.3",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.3",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3.2",
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"lessThanOrEqual": "7.3.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.4-rc1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.3",
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"versionEndExcluding": "7.3.2"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.3",
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"versionEndExcluding": "7.4-rc1"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.2.8"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/4e4e8b38994a0b0fc23f00ca6698b469a41abe70"
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},
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{
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"url": "https://git.kernel.org/stable/c/b4bae7af1154089be87c7475218264fcbfd16d10"
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}
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],
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"title": "ksmbd: defer connection scavenging while session locks are busy",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |