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-2026-93174",
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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": "2026-09-17T16:02:15.090Z",
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"datePublished": "2026-09-17T16:12:03.946Z",
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"dateUpdated": "2026-10-30T12:36:14.183Z"
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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": "2026-10-30T12:36:14.183Z"
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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\nbpf: Copy per-CPU map value padding in copy_map_value_long()\n\nIn kernel, per-CPU map elements are stored with\nround_up(map->value_size, 8) bytes. On UAPI lookup paths, it copies the\nrounded size for each CPU into a temporary buffer.\n\nHowever, copy_map_value_long() passes 'map->value_size' to\nbpf_obj_memcpy(). When the map has special fields, bpf_obj_memcpy() copies\naround those fields with memcpy(), and does not copy the tail padding\nbetween 'map->value_size' and round_up(map->value_size, 8).\n\nThe temporary UAPI lookup buffers are allocated without __GFP_ZERO. As a\nresult, when the per-CPU map's value size is not equal to\nround_up(map->value_size, 8), UAPI LOOKUP_ELEM and its variants can return\nstale heap contents from that padding to user space. The same issue\napplies to bpf_iter for per-CPU maps.\n\nPass round_up(map->value_size, 8) to bpf_obj_memcpy() from\ncopy_map_value_long(), so per-CPU maps both with and without special\nfields copy the entire per-CPU slot. Remove the now redundant round_up()\nfrom bpf_obj_memcpy()'s long_memcpy path."
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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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"include/linux/bpf.h"
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],
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"versions": [
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{
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"version": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "e0653c8f718109d140e806daac166c43e2b2b8bd",
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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": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "953e85da53541a8dc3e7ad4e8532f29a34a32eae",
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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": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "003bf840ed3326bd01396ce7d5b431cef0d371e7",
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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": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "5e9f69829835521aa2942d1d14bd0990fbc6991e",
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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": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "ff3f22ed8d2f350b4c24ee26e33daea5f08d58ef",
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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": "448325199f574d33824dbf9121efb03558412966",
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"lessThan": "7cf9cd98cf6f0df3befc167ca6b54c07014d71de",
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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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"include/linux/bpf.h"
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],
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"versions": [
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{
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"version": "6.1",
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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": "6.1",
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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": "6.1.191",
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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": "6.6.157",
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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": "6.18.52",
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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": "7.2.6",
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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": "6.1",
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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": "6.1",
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"versionEndExcluding": "6.6.157"
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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": "6.1",
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"versionEndExcluding": "6.12.110"
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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": "6.1",
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"versionEndExcluding": "6.18.52"
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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": "6.1",
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"versionEndExcluding": "7.2.6"
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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": "6.1",
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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/e0653c8f718109d140e806daac166c43e2b2b8bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/953e85da53541a8dc3e7ad4e8532f29a34a32eae"
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},
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{
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"url": "https://git.kernel.org/stable/c/003bf840ed3326bd01396ce7d5b431cef0d371e7"
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},
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{
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"url": "https://git.kernel.org/stable/c/5e9f69829835521aa2942d1d14bd0990fbc6991e"
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},
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{
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"url": "https://git.kernel.org/stable/c/ff3f22ed8d2f350b4c24ee26e33daea5f08d58ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/7cf9cd98cf6f0df3befc167ca6b54c07014d71de"
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}
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],
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"title": "bpf: Copy per-CPU map value padding in copy_map_value_long()",
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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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} |