CVE-2026-31659

Katalog CVE

CVSS 9.8 · Critical EPSS 0,76%

Kerentanan pada linux kernel. Skor CVSS 3.1 9.8 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject oversized global TT response buffers batadv_tt_prepare_tvlv_global_data() builds the allocation length for a global TT response in 16-bit temporaries. When a remote originator advertises a large enough global TT, the TT payload length plus the VLAN header offset can exceed 65535 and wrap before kmalloc(). The full-table response path still uses the original TT payload length when it fills tt_change, so the wrapped allocation is too small and batadv_tt_prepare_tvlv_global_data() writes past the end of the heap object before the later packet-size check runs. Fix this by rejecting TT responses whose TVLV value length cannot fit in the 16-bit TVLV payload length field.

Rincian

Terbit di NVD

24 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

EPSS (30 hari)

0,76% peluang dieksploitasi; lebih tinggi dari 53,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/2997f4bd1f982e7013709946e00be89b507693fa patch
• https://git.kernel.org/stable/c/3a359bf5c61d52e7f09754108309d637532164a6 patch
• https://git.kernel.org/stable/c/69d61639bc7e963c3b645e570279d731e7c89062 patch
• https://git.kernel.org/stable/c/7e5d007e0df946bffb8542fb112e0044014a5897 patch
• https://git.kernel.org/stable/c/95c71365a2222908441b54d6f2c315e0c79fcec3 patch
• https://git.kernel.org/stable/c/cf2199171ef799ca7270019125f4a91bd20ad4d9 patch
• https://git.kernel.org/stable/c/de6c1dc3c7d01a152607e6fcecee4d5288283f10 patch
• https://git.kernel.org/stable/c/f970646b9a39539d1bac86822ac78b5915455ea9 patch