264 lines
15 KiB
JSON
264 lines
15 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-2026-89846",
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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": "2026-09-11T19:38:34.770Z",
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"datePublished": "2026-09-16T10:31:20.306Z",
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"dateUpdated": "2026-10-19T08:53:39.169Z"
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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": "2026-10-19T08:53:39.169Z"
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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: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target's FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len > par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp->sense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command's sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites."
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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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 9.1,
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"baseSeverity": "CRITICAL"
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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:N - qla2xxx builds initiator status IOCBs from a remote Fibre Channel or FCoE target's FCP_RSP; QLogic CNAs speak FCoE and SAN fabrics are stretched across sites via FCIP/inter-fabric routing, so a malicious or compromised target delivers the crafted rsp_data_len over the storage network with no local access.\nAC:L - A hostile target fully controls FCP_RSP (SS_RESPONSE_INFO_LEN_VALID, rsp_data_len, sense_len, CHECK CONDITION, rsp_info[3]==0) and can return them on ordinary initiator I/O such as INQUIRY during fabric scan; no race, rare config, or victim state beyond a FWI2-capable HBA is required.\nPR:N - Completions are handled in the HBA interrupt/response-queue path (qla24xx_process_response_queue to qla2x00_status_entry) with no Linux credential or capability check; the attacker only needs to act as an FC/FCoE target on the fabric.\nUI:N - Once the target is visible on the fabric, the SCSI midlayer automatically issues commands (scan, path checks, mounted-filesystem I/O) whose STATUS_TYPE completions take the vulnerable path; no user mount, open, or other interactive step is required at exploit time.\nS:U - The out-of-bounds read and any resulting oops stay inside the host kernel that owns the qla2xxx driver and do not cross a VM, IOMMU, or other separate security authority.\nC:H - Attacker-controlled 32-bit rsp_info_len advances sense_data out of the 28-byte IOCB data area and underflows par_sense_len so qla2x00_handle_sense() copies up to SCSI_SENSE_BUFFERSIZE (96) bytes of adjacent response-ring or kernel memory into the command sense buffer, which userspace can read via SCSI completion, SG_IO, and BSG.\nI:N - The memcpy destination is the in-bounds SCSI sense buffer already capped at SCSI_SENSE_BUFFERSIZE; this is a source over-read only, with no out-of-bounds write, use-after-free, or control-flow hijack primitive.\nA:H - Adding a 32-bit attacker-chosen rsp_info_len to sense_data yields a wild kernel pointer; memcpy from an unmapped address in the interrupt-context response-queue path oopses or panics the host, and the target can repeat this on every command."
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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_isr.c"
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],
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"versions": [
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{
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"version": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "125b12861c726e58448bb95d55b04851fb131d1f",
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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": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "e57ace988bda5693f7b3645f652ea4b4220870ee",
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"status": "affected",
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},
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{
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"version": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "6b08c0cb110a1fba92f99d655020198489699815",
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"status": "affected",
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},
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{
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"version": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "be75ab791c9b3baca66c70ce03443afebc83acda",
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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": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "ebc41dfc59d190956e0113e8bd90c28f6f21e8b9",
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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": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "d7f7746ff031ae45724881261804f4bf5317c985",
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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": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "f6e8977bce887481b2b2b0e2e14a791270741cfb",
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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": "5544213be7b4fb693730106a6d70a8cc1aa7cdf6",
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"lessThan": "ca6d880d6c70cb7946e7b3e05d7285f271b6d99e",
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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/scsi/qla2xxx/qla_isr.c"
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],
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"versions": [
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{
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"version": "2.6.36",
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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": "2.6.36",
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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": "5.10.270",
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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": "5.15.221",
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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": "6.1.188",
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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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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.36",
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"versionEndExcluding": "5.10.270"
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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/125b12861c726e58448bb95d55b04851fb131d1f"
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},
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{
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"url": "https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee"
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},
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{
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"url": "https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815"
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},
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{
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"url": "https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda"
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},
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{
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"url": "https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985"
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},
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{
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"url": "https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb"
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},
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{
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"url": "https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"
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}
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],
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"title": "scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read",
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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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} |