CVE-2026-43089
xfrm_user: fix info leak in build_mapping()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 6, 2026 |
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Affected Versions
Linux / Linux
3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4 < d3125c541a96fb3c0fc7210112684baf22b6c24d 3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4 < 5a1a4b049ddde41466ccac0daeec326254b133f2 3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4 < f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c 3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4 < 700c9622b23c33b5933e6dcea816492c064e4e10 3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4 < 1beb76b2053b68c491b78370794b8ff63c8f8c02
Linux / Linux
2.6.29
References
git.kernel.org: https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d git.kernel.org: https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2 git.kernel.org: https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c git.kernel.org: https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10 git.kernel.org: https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02