143 lines
6.4 KiB
JSON
143 lines
6.4 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-2026-45927",
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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": "2026-05-13T15:03:33.086Z",
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"datePublished": "2026-05-27T12:17:46.284Z",
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"dateUpdated": "2026-05-27T12:17:46.284Z"
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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": "2026-05-27T12:17:46.284Z"
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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: Require frozen map for calculating map hash\n\nCurrently, bpf_map_get_info_by_fd calculates and caches the hash of the\nmap regardless of the map's frozen state.\n\nThis leads to a TOCTOU bug where userspace can call\nBPF_OBJ_GET_INFO_BY_FD to cache the hash and then modify the map\ncontents before freezing.\n\nTherefore, a trusted loader can be tricked into verifying the stale hash\nwhile loading the modified contents.\n\nFix this by returning -EPERM if the map is not frozen when the hash is\nrequested. This ensures the hash is only generated for the final,\nimmutable state of the map."
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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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"kernel/bpf/syscall.c"
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],
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"versions": [
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{
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"version": "ea2e6467ac36bf3d785defc89e58269b15d182f7",
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"lessThan": "7752d36343862323bbeea4ce3adf0ec2ed86e122",
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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": "ea2e6467ac36bf3d785defc89e58269b15d182f7",
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"lessThan": "f415e114b58fe02c41191e47f24bdabb438daf72",
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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": "ea2e6467ac36bf3d785defc89e58269b15d182f7",
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"lessThan": "a2c86aa621c22f2a7e26c654f936d65cfff0aa91",
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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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"kernel/bpf/syscall.c"
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],
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"versions": [
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{
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"version": "6.18",
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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": "6.18",
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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": "6.18.14",
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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": "6.19.4",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "6.18",
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"versionEndExcluding": "6.18.14"
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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": "6.18",
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"versionEndExcluding": "6.19.4"
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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": "6.18",
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"versionEndExcluding": "7.0"
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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/7752d36343862323bbeea4ce3adf0ec2ed86e122"
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},
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{
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"url": "https://git.kernel.org/stable/c/f415e114b58fe02c41191e47f24bdabb438daf72"
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},
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{
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"url": "https://git.kernel.org/stable/c/a2c86aa621c22f2a7e26c654f936d65cfff0aa91"
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}
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],
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"title": "bpf: Require frozen map for calculating map hash",
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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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} |