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CVE-2026-43089

In the Linux kernel, the following vulnerability has been resolved: xfrm_user: fix info leak in build_mapping() struct xfrm_usersa_id has a one-byte padding hole after the proto field, which ends up never getting set to zero before copying out to userspace. Fix that up by zeroing out the whole structure before setting individual variables.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:952c2787cb20e91760dd4d90f3d759c7a595b3220011f05eb1c272e57caa8c2d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/xfrm/xfrm_user.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.29"},{"lessThan":"2.6.29","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"less…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/xfrm/xfrm_user.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"521385cbd50ca9474396d88462fcdfa6489685d9","status":"affected","version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","versionType":"git"},{"lessThan":"c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f","status":"affected","version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","versionType":"git"},{"lessThan":"72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32","status":"affected","version":"3a2dfbe8acb154905fdc2fd03…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/xfrm/xfrm_user.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.29"},{"lessThan":"2.6.29","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"less…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/xfrm/xfrm_user.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"521385cbd50ca9474396d88462fcdfa6489685d9","status":"affected","version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","versionType":"git"},{"lessThan":"c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f","status":"affected","version":"3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4","versionType":"git"},{"lessThan":"72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32","status":"affected","version":"3a2dfbe8acb154905fdc2fd03…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/affected/0

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/521385cbd50ca9474396d88462fcdfa6489685d9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:52085b8eb1e52a5bc364f99cfbcd995b1fefb8bf10b1e3005d22611b167af9e2 · sha256:4bef6f58dcf95a6e… · /containers/cna/references/5

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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