CVE-2026-43178

Katalog CVE

CVSS 7.8 · High EPSS 0,17%

Kerentanan Double Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: procfs: fix possible double mmput() in do_procmap_query() When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we return with -ENAMETOOLONG error. After recent changes this condition happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original goto out is now wrong and will double-mmput() mm_struct. Fix by jumping further to clean up only vm_file and name_buf.

Rincian

Terbit di NVD

6 Mei 2026

Terakhir diubah

15 Juli 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-415: Double Free
CWE-1341: Multiple Releases of Same Resource or Handle

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/61dc9f776705d6db6847c101b98fa4f0e9eb6fa3 patch
• https://git.kernel.org/stable/c/8adaff87db143583e08eec4f4e7788f1ef8af94d patch
• https://git.kernel.org/stable/c/90f5e87c9b75833b9ef3a4415b92c0247f28ab2f patch
• https://git.kernel.org/stable/c/f9fe092084cd04deea18747f58a2304026e76aaa patch
• https://access.redhat.com/security/cve/CVE-2026-43178
• https://bugzilla.redhat.com/show_bug.cgi?id=2467227
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43178.json