CVE-2026-31664

Katalog CVE

CVSS 5.5 · Medium EPSS 0,12%

Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear trailing padding in build_polexpire() build_expire() clears the trailing padding bytes of struct xfrm_user_expire after setting the hard field via memset_after(), but the analogous function build_polexpire() does not do this for struct xfrm_user_polexpire. The padding bytes after the __u8 hard field are left uninitialized from the heap allocation, and are then sent to userspace via netlink multicast to XFRMNLGRP_EXPIRE listeners, leaking kernel heap memory contents. Add the missing memset_after() call, matching build_expire().

Rincian

Terbit di NVD

24 April 2026

Terakhir diubah

14 Juli 2026

Status NVD

Modified

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

0,12% peluang dieksploitasi; lebih tinggi dari 1,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/71a98248c63c535eaa4d4c22f099b68d902006d0 patch
• https://git.kernel.org/stable/c/ac6985903db047eaff54db929e4bf6b06782788e patch
• https://git.kernel.org/stable/c/b1dfd6b27df35ef4f87825aa5f607378d23ff0f2 patch
• https://git.kernel.org/stable/c/c221ed63a2769a0af8bd849dfe25740048f34ef4 patch
• https://git.kernel.org/stable/c/e1af65c669ebb1666c54576614c01a7f9ffcfff6 patch
• https://git.kernel.org/stable/c/eda30846ea54f8ed218468e5480c8305ca645e37 patch
• https://git.kernel.org/stable/c/a5127501c8d30b5728791b1e340284ca5c9cc4bd
• https://git.kernel.org/stable/c/e6f4ffe8596947a595c9544e73a73adcb0568b88
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html