185 lines
8.9 KiB
JSON
185 lines
8.9 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-2026-64474",
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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": "2026-07-19T15:36:31.790Z",
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"datePublished": "2026-07-25T08:51:37.405Z",
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"dateUpdated": "2026-08-17T04:56:20.392Z"
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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": "2026-08-17T04:56:20.392Z"
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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\nvfio: prevent infinite loop in vfio_mig_get_next_state() on blocked arc\n\nvfio_mig_get_next_state() walks vfio_from_fsm_table[] one step at a time,\nlooping to skip optional states the device does not support until\n*next_fsm is supported. A blocked transition is encoded as\nVFIO_DEVICE_STATE_ERROR, which the trailing return reports as -EINVAL.\n\nThe skip loop does not account for the ERROR sentinel.\nstate_flags_table[ERROR] is ~0U and vfio_from_fsm_table[ERROR][*] is\nERROR, so once *next_fsm becomes ERROR the loop condition stays true and\n*next_fsm never changes. The blocked arcs STOP_COPY -> PRE_COPY and\nSTOP_COPY -> PRE_COPY_P2P map to ERROR yet pass the support check on a\nprecopy-capable device, causing the loop to spin forever while holding\nthe driver state mutex. This can result in a soft lockup, and a panic\nwith softlockup_panic set.\n\nTerminate the skip loop on the ERROR sentinel so a blocked transition\nfalls through to the existing return and reports -EINVAL."
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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/vfio/vfio_main.c"
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],
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"versions": [
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{
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"version": "4db52602a6074e9cc523500b8304600ff63e7b85",
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"lessThan": "8e872c07e40d51a66dee7b280a23a460a2e1e3fa",
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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": "4db52602a6074e9cc523500b8304600ff63e7b85",
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"lessThan": "ed7d5599e6c398da74845767cd1e6a8370a160fc",
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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": "4db52602a6074e9cc523500b8304600ff63e7b85",
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"lessThan": "7f2d6b31089e48db4653df832c9a6afdde9a1c29",
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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": "4db52602a6074e9cc523500b8304600ff63e7b85",
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"lessThan": "a3a8afa2f6e7f0dc266d08f02be3f3054241ba47",
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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": "4db52602a6074e9cc523500b8304600ff63e7b85",
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"lessThan": "a26b499b757cfc8bbff1088bb1b844639e250893",
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"status": "affected",
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"versionType": "git"
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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/vfio/vfio_main.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "6.6.145",
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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": "6.12.96",
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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": "6.18.39",
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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": "7.1.4",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "6.2",
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"versionEndExcluding": "6.6.145"
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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": "6.2",
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"versionEndExcluding": "6.12.96"
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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": "6.2",
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"versionEndExcluding": "6.18.39"
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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": "6.2",
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"versionEndExcluding": "7.1.4"
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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": "6.2",
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"versionEndExcluding": "7.2"
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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/8e872c07e40d51a66dee7b280a23a460a2e1e3fa"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed7d5599e6c398da74845767cd1e6a8370a160fc"
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},
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{
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"url": "https://git.kernel.org/stable/c/7f2d6b31089e48db4653df832c9a6afdde9a1c29"
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},
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{
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"url": "https://git.kernel.org/stable/c/a3a8afa2f6e7f0dc266d08f02be3f3054241ba47"
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},
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{
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"url": "https://git.kernel.org/stable/c/a26b499b757cfc8bbff1088bb1b844639e250893"
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}
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],
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"title": "vfio: prevent infinite loop in vfio_mig_get_next_state() on blocked arc",
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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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} |