330 lines
16 KiB
JSON
330 lines
16 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-2021-46963",
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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": "2024-02-27T18:42:55.942Z",
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"datePublished": "2024-02-27T18:47:01.783Z",
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"dateUpdated": "2026-08-05T08:45:15.980Z"
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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": "2026-08-05T08:45:15.980Z"
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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: qla2xxx: Fix crash in qla2xxx_mqueuecommand()\n\n RIP: 0010:kmem_cache_free+0xfa/0x1b0\n Call Trace:\n qla2xxx_mqueuecommand+0x2b5/0x2c0 [qla2xxx]\n scsi_queue_rq+0x5e2/0xa40\n __blk_mq_try_issue_directly+0x128/0x1d0\n blk_mq_request_issue_directly+0x4e/0xb0\n\nFix incorrect call to free srb in qla2xxx_mqueuecommand(), as srb is now\nallocated by upper layers. This fixes smatch warning of srb unintended\nfree."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path is qla2xxx_queuecommand → qla2xxx_mqueuecommand on outbound initiator I/O through the SCSI/block stack, reachable by local reads/writes to qla2xxx-backed devices or filesystems, not by processing remote Fibre Channel or network packets.\nAC:L - Once a qpair is offline (PCI EEH/FLR/reset recovery, a normal operational state on QLogic FC HBAs) or DIF I/O hits an unsupported qpair, any subsequent SCSI command deterministically takes the QLA_INTERFACE_ERROR path and performs the incorrect free with no race or layout dependency.\nPR:L - Any unprivileged local user who can issue I/O to a mounted filesystem or block device backed by a qla2xxx HBA reaches queuecommand; no capabilities or init-namespace root are required.\nUI:N - The attacker triggers the bug by performing their own I/O against already-attached qla2xxx storage; no separate victim mount, open, or confirmation is required.\nS:U - Impact is confined to the host kernel privilege domain (crash or heap corruption via the SRB mempool); there is no VM escape, IOMMU bypass, or other cross-authority boundary crossing.\nC:H - When the SRB mempool is below min_nr (common with outstanding async fabric SRBs), mempool_free stores the embedded scsi_cmd_priv pointer; after scsi_done recycles the command this becomes a use-after-free that enables arbitrary kernel memory disclosure via heap reuse.\nI:H - The same mempool-poisoning UAF returns a dangling/aliased srb_t to later qla2xxx_get_qpair_sp callers for fabric/IOCB work, yielding heap corruption and control-flow hijack primitives suitable for privilege escalation.\nA:H - The reported failure is a kernel crash in kmem_cache_free from qla2xxx_mqueuecommand when the full mempool path frees the non-slab embedded SRB, which is full host availability impact."
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}
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]
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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/qla2xxx/qla_os.c"
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],
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"versions": [
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{
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"version": "64a8c5018a4b21b04a756a56c495ef47c14e92d9",
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"lessThan": "c5ab9b67d8b061de74e2ca51bf787ee599bd7f89",
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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": "dea6ee7173039d489977c9ed92e3749154615db4",
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"lessThan": "77509a238547863040a42d57c72403f7d4c89a8f",
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"status": "affected",
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},
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"version": "af2a0c51b1205327f55a7e82e530403ae1d42cbb",
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"lessThan": "702cdaa2c6283c135ef16d52e0e4e3c1005aa538",
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"status": "affected",
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"status": "affected",
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},
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{
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"version": "4a1cc2f71bc57cf8dee6f58e7d2355a43aabb312",
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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": "4.19.90",
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"lessThan": "4.19.191",
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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": "5.4.4",
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"lessThan": "5.4.118",
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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": "5.3.17",
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"lessThan": "5.4",
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"status": "affected",
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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/qla2xxx/qla_os.c"
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],
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"versions": [
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{
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"version": "5.5",
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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": "5.5",
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"status": "unaffected",
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},
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{
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"version": "4.19.191",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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},
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{
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"version": "5.4.118",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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},
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{
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"version": "5.10.36",
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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": "5.11.20",
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"lessThanOrEqual": "5.11.*",
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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": "5.12.3",
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"lessThanOrEqual": "5.12.*",
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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": "5.13",
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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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"operator": "OR",
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}
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],
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"title": "scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"id": "CVE-2021-46963",
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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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"Technical Impact": "partial"
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"timestamp": "2024-02-27T20:13:28.391773Z"
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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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