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-2026-90187",
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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": "2026-09-11T19:38:34.791Z",
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"datePublished": "2026-09-17T16:07:09.683Z",
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"dateUpdated": "2026-10-30T12:34:40.977Z"
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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": "2026-10-30T12:34:40.977Z"
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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\nnull_blk: free zones array on device power-off\n\nnull_init_zoned_dev() allocates dev->zones when a zoned device is powered\non, but null_del_dev() never frees it on power-off; dev->zones is only\nfreed later in null_free_dev(), when the configfs directory is removed. If\nthe device is powered off and then on again, null_init_zoned_dev()\nallocates a new array and overwrites the dev->zones pointer, leaking the\nprevious allocation each power cycle.\n\nFree dev->zones in null_del_dev() via null_free_zoned_dev() to solve it.\nAnd calling null_free_zoned_dev() in null_free_dev() is no longer necessary\nbecause every caller already invokes null_del_dev() first: via\nnullb_group_drop_item() before nullb_device_release(), in the\nnull_add_dev() error path of null_create_dev(), and in null_destroy_dev().\nRemove the redundant call.\n\nAnd take &lock around zone_cond_store() in the two store wrappers to\nserialize dev->zones check-and-deref against its alloc/free, which already\nrun under &lock. The reason there was no problem before is that only\nnullb_device_release() or null_exit() frees the dev->zones, which\nguarantees that subsequent users won't access the configfs interface."
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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/block/null_blk/main.c"
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],
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"versions": [
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{
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"version": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "26d21585caa61c30d0f3044a1e6d172456148c9f",
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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": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "08a31a2cc3d1cea67ccd292d01511cd0a72d4656",
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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": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "056be41932c95aabdb3c2967d1ef4978f17a0225",
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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": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "b2437d37fcc31fce8a5da1cc1739e284814d2491",
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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": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "0a3afab87124171022fb3579502fa38ef5b311c9",
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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": "ca4b2a011948fae4e4d31490107db4926385a983",
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"lessThan": "2a6357a9b935a34f5508618fee8a7fffbf7722a8",
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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/block/null_blk/main.c"
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],
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"versions": [
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{
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"version": "4.19",
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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": "4.19",
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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": "6.6.160",
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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": "6.18.52",
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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": "7.2.6",
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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": "4.19",
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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": "4.19",
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"versionEndExcluding": "6.6.160"
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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": "4.19",
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"versionEndExcluding": "6.12.110"
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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": "4.19",
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"versionEndExcluding": "6.18.52"
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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": "4.19",
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"versionEndExcluding": "7.2.6"
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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": "4.19",
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"versionEndExcluding": "7.3"
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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/26d21585caa61c30d0f3044a1e6d172456148c9f"
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},
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{
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"url": "https://git.kernel.org/stable/c/08a31a2cc3d1cea67ccd292d01511cd0a72d4656"
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},
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{
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"url": "https://git.kernel.org/stable/c/056be41932c95aabdb3c2967d1ef4978f17a0225"
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},
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{
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"url": "https://git.kernel.org/stable/c/b2437d37fcc31fce8a5da1cc1739e284814d2491"
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},
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{
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"url": "https://git.kernel.org/stable/c/0a3afab87124171022fb3579502fa38ef5b311c9"
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},
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{
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"url": "https://git.kernel.org/stable/c/2a6357a9b935a34f5508618fee8a7fffbf7722a8"
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}
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],
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"title": "null_blk: free zones array on device power-off",
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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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} |