CVE-2026-23140

Katalog CVE

CVSS 5.5 · Medium EPSS 0,14%

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: bpf, test_run: Subtract size of xdp_frame from allowed metadata size The xdp_frame structure takes up part of the XDP frame headroom, limiting the size of the metadata. However, in bpf_test_run, we don't take this into account, which makes it possible for userspace to supply a metadata size that is too large (taking up the entire headroom). If userspace supplies such a large metadata size in live packet mode, the xdp_update_frame_from_buff() call in xdp_test_run_init_page() call will fail, after which packet transmission proceeds with an uninitialised frame structure, leading to the usual Bad Stuff. The commit in the Fixes tag fixed a related bug where the second check in xdp_update_frame_from_buff() could fail, but did not add any additional constraints on the metadata size. Complete the fix by adding an additional check on the metadata size. Reorder the checks slightly to make the logic clearer and add a comment.

Rincian

Terbit di NVD

14 Februari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

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)

0,14% peluang dieksploitasi; lebih tinggi dari 3,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/31e37f44b60679d90b9f999c91371b15291be8e0 patch
• https://git.kernel.org/stable/c/6447e697cfa8a43a8e491cb81bcc390d0f28f8ba patch
• https://git.kernel.org/stable/c/7c81ad5e580bd8441f8a521a8d34824ce6582ae5 patch
• https://git.kernel.org/stable/c/e558cca217790286e799a8baacd1610bda31b261 patch
• https://git.kernel.org/stable/c/e7440935063949d6f2c10f7328d960d0ff4bce90 patch