{"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"}}}}