{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43089", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.984Z", "datePublished": "2026-05-06T07:40:22.630Z", "dateUpdated": "2026-05-11T22:17:30.710Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:17:30.710Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm_user: fix info leak in build_mapping()\n\nstruct xfrm_usersa_id has a one-byte padding hole after the proto\nfield, which ends up never getting set to zero before copying out to\nuserspace.  Fix that up by zeroing out the whole structure before\nsetting individual variables."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_user.c"], "versions": [{"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4", "lessThan": "d3125c541a96fb3c0fc7210112684baf22b6c24d", "status": "affected", "versionType": "git"}, {"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4", "lessThan": "5a1a4b049ddde41466ccac0daeec326254b133f2", "status": "affected", "versionType": "git"}, {"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4", "lessThan": "f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c", "status": "affected", "versionType": "git"}, {"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4", "lessThan": "700c9622b23c33b5933e6dcea816492c064e4e10", "status": "affected", "versionType": "git"}, {"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4", "lessThan": "1beb76b2053b68c491b78370794b8ff63c8f8c02", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_user.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.6.136"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.12.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d"}, {"url": "https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2"}, {"url": "https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c"}, {"url": "https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10"}, {"url": "https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02"}], "title": "xfrm_user: fix info leak in build_mapping()", "x_generator": {"engine": "bippy-1.2.0"}}}}