193 lines
10 KiB
JSON
193 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-2024-46842",
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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": "2024-09-11T15:12:18.289Z",
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"datePublished": "2024-09-27T12:39:36.370Z",
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"dateUpdated": "2026-10-21T12:35:15.471Z"
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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": "2026-10-21T12:35:15.471Z"
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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: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info\n\nThe MBX_TIMEOUT return code is not handled in lpfc_get_sfp_info and the\nroutine unconditionally frees submitted mailbox commands regardless of\nreturn status. The issue is that for MBX_TIMEOUT cases, when firmware\nreturns SFP information at a later time, that same mailbox memory region\nreferences previously freed memory in its cmpl routine.\n\nFix by adding checks for the MBX_TIMEOUT return code. During mailbox\nresource cleanup, check the mbox flag to make sure that the wait did not\ntimeout. If the MBOX_WAKE flag is not set, then do not free the resources\nbecause it will be freed when firmware completes the mailbox at a later\ntime in its cmpl routine.\n\nAlso, increase the timeout from 30 to 60 seconds to accommodate boot\nscripts requiring longer timeouts."
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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 only path to the vulnerable function is a read of the sysfs attribute /sys/class/scsi_host/hostN/lpfc_xcvr_data, which requires local system access. The remote FC RDP ELS path uses the separate async lpfc_get_rdp_info() and is not affected.\nAC:L - The attacker creates the timeout condition themselves: the sysfs handler has no serialization or rate limiting, and all mailbox commands are drained serially from an unbounded FIFO, so many concurrent readers push individual waits past the 30-second window. Timeouts are demonstrably reachable in ordinary operation, as the fix itself raises the timeout to 60s for boot scripts.\nPR:L - The attribute is declared DEVICE_ATTR_RO (mode 0444) in the unconditional lpfc_hba_attrs[] group, so any local unprivileged account can read it with no capability check in lpfc_xcvr_data_show(). Only a basic local user account is needed.\nUI:N - The attacker performs the sysfs read themselves; no victim action or cooperation is required.\nS:U - The corruption is confined to kernel heap and driver structures within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed LPFC_MBOXQ_t and its DMA buffer are recycled while the HBA still writes SFP page data into them, and the stale completion path reads pointers and a function pointer out of reallocated memory, giving a use-after-free read primitive over arbitrary reclaimed kernel objects.\nI:H - The mbox is memset and re-issued while still on psli->mboxq (list corruption), then double-freed via mempool_free plus lpfc_sli4_mbox_cmd_free on reclaimed memory, yielding arbitrary-pointer free and an indirect call through mbox_cmpl read from attacker-groomed heap — exploitable for control-flow hijack.\nA:H - The use-after-free, double free, and doubly-linked-list corruption of the mailbox queue reliably produce an oops or panic, and the attacker can repeat the sysfs read to retrigger it at will."
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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/lpfc/lpfc_els.c"
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],
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"versions": [
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{
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"version": "479b0917e4477f49df2e3be454aac3cfa5dec171",
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"lessThan": "c6d8cce685d6088d795b29a0f47e6fd04548fd64",
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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": "479b0917e4477f49df2e3be454aac3cfa5dec171",
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"lessThan": "bba47fe3b038cca3d3ebd799665ce69d6d273b58",
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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": "479b0917e4477f49df2e3be454aac3cfa5dec171",
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"lessThan": "ede596b1434b57c0b3fd5c02b326efe5c54f6e48",
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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/lpfc/lpfc_els.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "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": "6.10.10",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "6.2",
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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": "6.2",
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"versionEndExcluding": "6.10.10"
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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": "6.2",
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"versionEndExcluding": "6.11"
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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/c6d8cce685d6088d795b29a0f47e6fd04548fd64"
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},
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{
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"url": "https://git.kernel.org/stable/c/bba47fe3b038cca3d3ebd799665ce69d6d273b58"
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},
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{
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"url": "https://git.kernel.org/stable/c/ede596b1434b57c0b3fd5c02b326efe5c54f6e48"
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}
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],
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"title": "scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info",
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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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"timestamp": "2024-09-29T13:59:24.823160Z",
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"id": "CVE-2024-46842",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2024-09-29T13:59:29.321Z"
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}
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}
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]
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}
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} |