227 lines
11 KiB
JSON
227 lines
11 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-2026-98900",
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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": "2026-09-25T10:25:14.379Z",
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"datePublished": "2026-10-23T11:54:10.566Z",
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"dateUpdated": "2026-10-26T06:56:27.943Z"
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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": "2026-10-26T06:56:27.943Z"
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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\nxen/gntalloc: validate grant count before allocation\n\ngntalloc_ioctl_alloc() allocates the grant-id array before checking\nwhether the requested count fits within the global grant limit. Counts\nabove that limit cannot succeed, so reject them before the\nuser-controlled allocation reaches kcalloc().\n\nUse a subtraction-based check while holding gref_mutex so adding the\nrequested count cannot wrap. Also cast the count before advancing the\nper-file index so the page-size multiplication is performed in 64-bit\narithmetic."
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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/xen/gntalloc.c"
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],
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"versions": [
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{
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"version": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "e2806390aa1c4d5b3f7a68f10a56ae12c71c00d8",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "71a0cf87e19fb35c4292ca88985e376e613c900a",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "641de086a05f349de7fc548612432bc2fed721ca",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "720554c04acba80018ded069d3e0984bebaee891",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "84d5727cef8eb9c8a28210ad248f1c70b223b065",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "231542f4e43cf9837cb520664545e85fbe666b7b",
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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": "dd3140588d9551235ebc2a0dacdca098e7677573",
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"lessThan": "2299822f3f466b5dcad2377bf63986199f881a6b",
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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/xen/gntalloc.c"
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],
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"versions": [
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{
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"version": "2.6.39",
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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": "2.6.39",
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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": "5.10.271",
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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": "5.15.222",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.111",
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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": "6.18.53",
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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",
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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": "2.6.39",
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"versionEndExcluding": "5.10.271"
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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": "2.6.39",
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"versionEndExcluding": "5.15.222"
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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": "2.6.39",
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"versionEndExcluding": "6.1.189"
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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": "2.6.39",
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"versionEndExcluding": "6.6.158"
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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": "2.6.39",
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"versionEndExcluding": "6.12.111"
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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": "2.6.39",
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"versionEndExcluding": "6.18.53"
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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": "2.6.39",
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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/e2806390aa1c4d5b3f7a68f10a56ae12c71c00d8"
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},
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{
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"url": "https://git.kernel.org/stable/c/71a0cf87e19fb35c4292ca88985e376e613c900a"
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},
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{
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"url": "https://git.kernel.org/stable/c/641de086a05f349de7fc548612432bc2fed721ca"
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},
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{
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"url": "https://git.kernel.org/stable/c/720554c04acba80018ded069d3e0984bebaee891"
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},
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{
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"url": "https://git.kernel.org/stable/c/84d5727cef8eb9c8a28210ad248f1c70b223b065"
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},
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{
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"url": "https://git.kernel.org/stable/c/231542f4e43cf9837cb520664545e85fbe666b7b"
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},
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{
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"url": "https://git.kernel.org/stable/c/2299822f3f466b5dcad2377bf63986199f881a6b"
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}
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],
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"title": "xen/gntalloc: validate grant count before allocation",
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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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} |