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-2026-99155",
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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": "2026-09-25T10:25:14.397Z",
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"datePublished": "2026-10-28T10:35:09.733Z",
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"dateUpdated": "2026-10-30T12:42:21.472Z"
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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": "2026-10-30T12:42:21.472Z"
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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: xen/scsifront: Check for a NULL shadow entry on a backend response\n\nscsifront_do_response() validates the rqid in a backend response against\nVSCSIIF_MAX_REQS before using it to index info->shadow[], but then\ndereferences the entry to test ->inflight without checking that the slot\nis populated. Shadow slots are NULL before a command is submitted (the\nhost private area is zeroed at allocation) and are reset to NULL in\n_scsifront_put_rqid() once a request completes, so an in-range rqid that\ndoes not correspond to an outstanding request makes the frontend\ndereference a NULL pointer.\n\nA malicious or buggy backend can thus crash the guest by returning a\nresponse whose rqid is in range but not in flight -- for example a\nspurious response before any command has been issued, or a duplicate of\none already completed. The ring has only VSCSIIF_MAX_REQS (16) slots,\nso before the first command every in-range rqid selects a NULL slot.\n\nReject a response whose shadow slot is not populated."
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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/xen-scsifront.c"
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],
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"versions": [
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{
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"version": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "448b9a8b530b753d346dab10add09a502fc719a4",
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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": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "e397d4da76bed72db6ac4a0848fb6217f8394dca",
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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": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "90186a2354821329a27d92b266c0f05e8f4f637c",
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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": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "1d91ec793d6c80eca963d426e0da832d40a062df",
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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": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "15791e57f57f7050014d08cfe239d4aa1e6b94b0",
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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": "6d1c2f48f3fcf5f42967938c8ba6b42ac6b44b43",
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"lessThan": "8c8222c255772713eb36cde695777a1fce224917",
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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/xen-scsifront.c"
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],
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"versions": [
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{
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"version": "5.19",
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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": "5.19",
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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": "6.6.161",
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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": "6.12.115",
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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": "6.18.59",
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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": "7.2.13",
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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": "5.19",
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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": "5.19",
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"versionEndExcluding": "6.6.161"
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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": "5.19",
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"versionEndExcluding": "6.12.115"
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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": "5.19",
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"versionEndExcluding": "6.18.59"
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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": "5.19",
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"versionEndExcluding": "7.2.13"
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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": "5.19",
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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/448b9a8b530b753d346dab10add09a502fc719a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/e397d4da76bed72db6ac4a0848fb6217f8394dca"
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},
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{
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"url": "https://git.kernel.org/stable/c/90186a2354821329a27d92b266c0f05e8f4f637c"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d91ec793d6c80eca963d426e0da832d40a062df"
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},
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{
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"url": "https://git.kernel.org/stable/c/15791e57f57f7050014d08cfe239d4aa1e6b94b0"
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},
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{
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"url": "https://git.kernel.org/stable/c/8c8222c255772713eb36cde695777a1fce224917"
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}
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],
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"title": "scsi: xen/scsifront: Check for a NULL shadow entry on a backend response",
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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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} |