246 lines
13 KiB
JSON
246 lines
13 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-2026-99202",
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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": "2026-09-25T10:25:14.400Z",
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"datePublished": "2026-10-28T10:35:56.827Z",
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"dateUpdated": "2026-10-30T12:42:52.198Z"
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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": "2026-10-30T12:42:52.198Z"
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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\nscsi: libsas: Fix SMP IO deadlock during HA resume\n\nsmp_execute_task_sg() calls pm_runtime_get_sync() on the host before\nissuing an SMP command. When that command is itself issued from the HA\nresume path, the get_sync() deadlocks: it waits for the ongoing resume\n(the device is RPM_RESUMING), while the resume is blocked in\nsas_drain_work() waiting for that same SMP IO to complete.\n\nThe deadlock needs an expander-attached SATA disk. During\nsas_resume_ha() -> sas_drain_work(), DISCE_RESUME -> sas_resume_sata()\n-> ata_sas_port_resume() requests ATA_EH_RESET, and the hard reset for\nsuch a disk is done via SMP PHY CONTROL (sas_ata_hard_reset() ->\nsas_phy_reset() -> sas_smp_phy_control() ->\nsmp_execute_task_sg()). Direct-attached SATA resets through\nlldd_control_phy() and SSP devices use TMFs, so neither hits this.\n\nReplace the get_sync()/put_sync() pair with\npm_runtime_get_noresume()/pm_runtime_put(). smp_execute_task_sg() only\nneeds to hold off autosuspend while the SMP is in flight, and it must\nnot try to resume the host: a sync resume issued from the HA resume path\nitself is what deadlocks, and by the time sas_resume_ha() runs, hw_init\nhas already reinitialized the hardware, so the device is accessible\nwithout one.\n\nThe usage reference is still required. Discovery work normally runs\ninside an event worker's PM reference, taken at sas_notify_port_event()\nnotify time and held until the handler has flushed the disco\nqueue. sas_rediscover_ex_phy() however requeues DISCE_REVALIDATE_DOMAIN\nfrom within the revalidation worker itself, and flush_workqueue() does\nnot wait for work items queued during execution, so that chained\nrevalidation runs with no outer PM reference - without the\nget_noresume(), its SMP could race autosuspend.\n\nFor the BSG path, sas_smp_handler() is the only caller which may find\nthe host autosuspended: expander SMP requests do not go through any SCSI\ndevice request queue, so nothing else in that path holds the host\nawake. Resume it there with pm_runtime_resume_and_get() and check the\nresult."
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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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"drivers/scsi/libsas/sas_expander.c"
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],
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"versions": [
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{
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"version": "09357f067122e2e28ec52e27013a1660a1571618",
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"lessThan": "ab91a558084fdb8cca4919ffb769ca4328e91bbd",
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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": "e50a6523a603594a6d92cdecfe11997d639410a3",
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"lessThan": "6078a5369f9e8d22bb03b8890cb0bb47c91a5017",
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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": "c391b5899dd46485a5893696c12ae3e95a3a7325",
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"lessThan": "7004c18c38aaa2b87164b54dd77c320b4c63b89b",
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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": "9e24b47ef81d43b3fb1b14294f09991640c79fcc",
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"lessThan": "c9fb89246d9922ac0a45d504adb03e0bb971310c",
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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": "3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845",
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"lessThan": "08b95ef36a64c3ae4490794bed3c35d0c3354e85",
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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": "3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845",
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"lessThan": "81e097a064b28b4a1f6ca1a8b433e659c1bd64c0",
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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": "b9c44a14062093e9fc2d6bddc696cfceadb482d7",
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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": "6.1.183",
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"lessThan": "6.1.191",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.151",
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"lessThan": "6.6.161",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.12.103",
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"lessThan": "6.12.115",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.18.44",
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"lessThan": "6.18.59",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "7.1.8",
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"lessThan": "7.2",
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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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"drivers/scsi/libsas/sas_expander.c"
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],
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"versions": [
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{
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"version": "7.2",
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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": "7.2",
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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": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.161",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.115",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.59",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.13",
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"lessThanOrEqual": "7.2.*",
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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",
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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": "6.1.183",
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"versionEndExcluding": "6.1.191"
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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": "6.6.151",
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"versionEndExcluding": "6.6.161"
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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": "6.12.103",
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"versionEndExcluding": "6.12.115"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18.44",
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"versionEndExcluding": "6.18.59"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.2",
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"versionEndExcluding": "7.2.13"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "7.3"
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{
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"vulnerable": true,
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"versionStartIncluding": "7.1.8"
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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/ab91a558084fdb8cca4919ffb769ca4328e91bbd"
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},
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{
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"url": "https://git.kernel.org/stable/c/6078a5369f9e8d22bb03b8890cb0bb47c91a5017"
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},
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{
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"url": "https://git.kernel.org/stable/c/7004c18c38aaa2b87164b54dd77c320b4c63b89b"
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},
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{
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"url": "https://git.kernel.org/stable/c/c9fb89246d9922ac0a45d504adb03e0bb971310c"
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},
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{
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"url": "https://git.kernel.org/stable/c/08b95ef36a64c3ae4490794bed3c35d0c3354e85"
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},
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{
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"url": "https://git.kernel.org/stable/c/81e097a064b28b4a1f6ca1a8b433e659c1bd64c0"
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}
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],
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"title": "scsi: libsas: Fix SMP IO deadlock during HA resume",
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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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} |