Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.29.1, < 6.6.136 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02Patch
- https://git.kernel.org/stable/c/521385cbd50ca9474396d88462fcdfa6489685d9
- https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2Patch
- https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10Patch
- https://git.kernel.org/stable/c/72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32
- https://git.kernel.org/stable/c/c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f
- https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24dPatch
- https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0cPatch
FAQ
What is CVE-2026-43089?
CVE-2026-43089 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2026-43089?
CVE-2026-43089 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43089?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.