286 lines
14 KiB
JSON
286 lines
14 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-2026-64192",
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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": "2026-07-19T07:54:57.040Z",
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"datePublished": "2026-07-20T16:27:51.720Z",
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"dateUpdated": "2026-11-06T16:34:29.631Z"
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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": "2026-08-23T12:45:34.754Z"
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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\nbpf: Reject BPF_MAP_TYPE_INODE_STORAGE creation if BPF LSM is uninitialized\n\nWhen CONFIG_BPF_LSM=y is set, BPF inode storage maps\n(BPF_MAP_TYPE_INODE_STORAGE) are compiled into the kernel. However,\nif the BPF LSM is not explicitly enabled at boot time (e.g. omitted\nfrom the \"lsm=\" boot parameter), lsm_prepare() is never executed for\nthe BPF LSM.\n\nConsequently, the BPF inode security blob offset\n(bpf_lsm_blob_sizes.lbs_inode) is never initialized and remains at\nits default compiled size of 8 bytes instead of being updated to a\nvalid offset past the reserved struct rcu_head (typically 16 bytes\nor more).\n\nWhen a privileged user creates and updates a BPF_MAP_TYPE_INODE_STORAGE\nmap, bpf_inode() evaluates inode->i_security + 8. This erroneously\naliases the struct rcu_head.func callback pointer at the beginning\nof the inode->i_security blob. During subsequent map element cleanup\nor inode destruction, writing NULL to owner_storage clears the queued\nRCU callback pointer. When rcu_do_batch() later executes the queued\ncallback, it attempts an instruction fetch at address 0x0, triggering\nan immediate kernel panic.\n\nFix this by introducing a global bpf_lsm_initialized boolean flag\nmarked with __ro_after_init. Set this flag to true inside bpf_lsm_init()\nwhen the LSM framework successfully registers the BPF LSM. Gate map\nallocation in inode_storage_map_alloc() on this flag, returning\n-EOPNOTSUPP if the BPF LSM is in turn uninitialized.\n\nThis fail-fast approach prevents userspace from allocating inode\nstorage maps when the supporting BPF LSM infrastructure is absent,\navoiding zombie map states."
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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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"include/linux/bpf_lsm.h",
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"kernel/bpf/bpf_inode_storage.c",
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"security/bpf/hooks.c"
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],
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"versions": [
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{
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"version": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "413b14b9623a2e6ee131c2b2152b304aeb04e378",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "a6d634f794c808a261eac7d5af023a7e06b9ecd8",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "721f669853bdbf46b475a81bb5d05d610f8c19de",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "5337eebdf8c5d4810b1913047f078d2815d5645f",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "de984ea883405420fdc416ae8964b752df586970",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "267fdd9b6530c399dfd996e1a0a7628b45baf9f0",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "c76b8abce575e0c6e4096957220b4515ed847d89",
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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": "8ea636848aca35b9f97c5b5dee30225cf2dd0fe6",
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"lessThan": "a6f0643e4f63cfaa0d5d4a69de4f132eac4b8fe4",
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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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"include/linux/bpf_lsm.h",
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"kernel/bpf/bpf_inode_storage.c",
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"security/bpf/hooks.c"
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],
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"versions": [
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{
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"version": "5.10",
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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": "5.10",
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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": "5.10.266",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.217",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.184",
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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": "6.6.148",
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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": "6.12.97",
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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": "6.18.40",
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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": "5.10",
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"versionEndExcluding": "5.10.266"
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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": "5.10",
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"versionEndExcluding": "5.15.217"
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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": "5.10",
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"versionEndExcluding": "6.1.184"
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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": "5.10",
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"versionEndExcluding": "6.6.148"
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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": "5.10",
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"versionEndExcluding": "6.12.97"
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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": "5.10",
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"versionEndExcluding": "6.18.40"
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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": "5.10",
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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": "5.10",
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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/413b14b9623a2e6ee131c2b2152b304aeb04e378"
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},
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{
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"url": "https://git.kernel.org/stable/c/a6d634f794c808a261eac7d5af023a7e06b9ecd8"
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},
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{
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"url": "https://git.kernel.org/stable/c/721f669853bdbf46b475a81bb5d05d610f8c19de"
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},
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{
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"url": "https://git.kernel.org/stable/c/5337eebdf8c5d4810b1913047f078d2815d5645f"
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},
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{
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"url": "https://git.kernel.org/stable/c/de984ea883405420fdc416ae8964b752df586970"
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},
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{
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"url": "https://git.kernel.org/stable/c/267fdd9b6530c399dfd996e1a0a7628b45baf9f0"
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},
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{
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"url": "https://git.kernel.org/stable/c/c76b8abce575e0c6e4096957220b4515ed847d89"
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},
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{
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"url": "https://git.kernel.org/stable/c/a6f0643e4f63cfaa0d5d4a69de4f132eac4b8fe4"
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}
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],
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"title": "bpf: Reject BPF_MAP_TYPE_INODE_STORAGE creation if BPF LSM is uninitialized",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-64192",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T16:32:03.849558Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-06T16:34:29.631Z"
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}
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}
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]
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}
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} |