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Fix that up by zeroing out the whole structure before\nsetting individual variables.","publishedAt":"2026-05-06T07:40:22.630Z","updatedAt":"2026-10-15T01:19:04.146Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"521385cbd50ca9474396d88462fcdfa6489685d9","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"d3125c541a96fb3c0fc7210112684baf22b6c24d","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"5a1a4b049ddde41466ccac0daeec326254b133f2","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"700c9622b23c33b5933e6dcea816492c064e4e10","versionType":"git"},{"version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","status":"affected","lessThan":"1beb76b2053b68c491b78370794b8ff63c8f8c02","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.136","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.83","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.24","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.14","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]}],"references":["https://git.kernel.org/stable/c/521385cbd50ca9474396d88462fcdfa6489685d9","https://git.kernel.org/stable/c/c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f","https://git.kernel.org/stable/c/72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32","https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d","https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2","https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c","https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10","https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43089.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43089","state":"PUBLISHED","datePublished":"2026-05-06T07:40:22.630Z","dateUpdated":"2026-10-15T01:19:04.146Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.984Z"},"containers":{"cna":{"title":"xfrm_user: fix info leak in build_mapping()","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.  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