206 lines
10 KiB
JSON
206 lines
10 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-2026-89955",
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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": "2026-09-11T19:38:34.777Z",
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"datePublished": "2026-09-16T10:32:39.064Z",
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"dateUpdated": "2026-10-30T12:33:33.417Z"
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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": "2026-10-30T12:33:33.417Z"
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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\ns390/vfio-ap: Fix NULL deref in status_show() during queue probe\n\nWhen vfio_ap_mdev_probe_queue() creates the sysfs attribute group,\nthe queue's driver data has not yet been set. A concurrent read of\nthe 'status' attribute can therefore call dev_get_drvdata() and\nget NULL, which is then passed directly to\nvfio_ap_mdev_for_queue() where q->apqn is unconditionally\ndereferenced, causing a NULL pointer dereference.\n\nFix this by acquiring the update locks before calling\nsysfs_create_group(). The status_show() function acquires\nguests_lock before reading the driver data, so any concurrent\nread will block until after dev_set_drvdata() has been called\nand the update locks are released.\n\nAs a bonus, the APQN no longer needs to be read from the queue\nstruct after allocation — it can be read directly from apdev\nbefore allocation and stored in a local variable, which is then\nassigned to q->apqn once the allocation succeeds."
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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/s390/crypto/vfio_ap_ops.c"
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],
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"versions": [
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{
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"version": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "10606c9af18baed75cd180b96ee695441aa15134",
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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": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "31fa0a8a3c337ed2d200166d6926ab23c14f8b2e",
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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": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "e102ce0f4af99dff769a4b1b4daa4cc6bd5ad2d9",
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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": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "69632952aca04caa71e49953b6949fc04e788e67",
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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": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "7db2511fc601ca3a6e3fb1bdce02261c3c3167c3",
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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": "260f3ea141382386e97611e7c2029bc013088ab1",
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"lessThan": "dd6f4ef6f8a37412909ad787c837332fb070159c",
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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/s390/crypto/vfio_ap_ops.c"
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],
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"versions": [
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{
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"version": "6.0",
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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": "6.0",
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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": "6.6.157",
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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": "6.12.110",
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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": "6.18.51",
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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": "7.2.5",
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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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"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": "6.0",
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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": "6.0",
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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/10606c9af18baed75cd180b96ee695441aa15134"
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},
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{
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"url": "https://git.kernel.org/stable/c/31fa0a8a3c337ed2d200166d6926ab23c14f8b2e"
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},
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{
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"url": "https://git.kernel.org/stable/c/e102ce0f4af99dff769a4b1b4daa4cc6bd5ad2d9"
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},
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{
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"url": "https://git.kernel.org/stable/c/69632952aca04caa71e49953b6949fc04e788e67"
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},
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{
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"url": "https://git.kernel.org/stable/c/7db2511fc601ca3a6e3fb1bdce02261c3c3167c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd6f4ef6f8a37412909ad787c837332fb070159c"
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}
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],
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"title": "s390/vfio-ap: Fix NULL deref in status_show() during queue probe",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |