CVE-2025-39826

Katalog CVE

CVSS 7.0 · High EPSS 0,21%

Kerentanan Use After Free pada linux kernel, debian linux. Skor CVSS 3.1 7.0 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net: rose: convert 'use' field to refcount_t The 'use' field in struct rose_neigh is used as a reference counter but lacks atomicity. This can lead to race conditions where a rose_neigh structure is freed while still being referenced by other code paths. For example, when rose_neigh->use becomes zero during an ioctl operation via rose_rt_ioctl(), the structure may be removed while its timer is still active, potentially causing use-after-free issues. This patch changes the type of 'use' from unsigned short to refcount_t and updates all code paths to use rose_neigh_hold() and rose_neigh_put() which operate reference counts atomically.

Rincian

Terbit di NVD

16 September 2025

Terakhir diubah

30 Juli 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,21% peluang dieksploitasi; lebih tinggi dari 9,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0085b250fcc79f900c82a69980ec2f3e1871823b patch
• https://git.kernel.org/stable/c/203e4f42596ede31498744018716a3db6dbb7f51 patch
• https://git.kernel.org/stable/c/d860d1faa6b2ce3becfdb8b0c2b048ad31800061 patch
• https://git.kernel.org/stable/c/f8c29fc437d03a98fb075c31c5be761cc8326284 patch
• https://git.kernel.org/stable/c/fb07156cc0742ba4e93dfcc84280c011d05b301f patch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html mailing list · advisory pihak ketiga
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-032379.html