CVE-2026-53254

Katalog CVE

CVSS 8.1 · High EPSS 0,27%

Kerentanan Out-of-bounds Read pada linux kernel. Skor CVSS 3.1 8.1 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in MCC handlers The RFCOMM MCC handlers cast skb->data to protocol-specific structs without validating skb->len first. A malicious remote device can send truncated MCC frames and trigger out-of-bounds reads in these handlers. Fix this by using skb_pull_data() to validate and access the required data before dereferencing it. rfcomm_recv_rpn() requires special handling since ETSI TS 07.10 allows 1-byte RPN requests. Handle this by validating only the DLCI byte first, and validating the full struct only when len > 1.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: 14 Kerentanan Kernel Linux Periode September 2026 pada Ubuntu, AlmaLinux, dan Debian 30 Sep 2026

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

8 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 17,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/08b9c1fbe78f4ad3f6250c6541cfaabdbeb81997 patch
• https://git.kernel.org/stable/c/0d637136ce89f9a2309b2c3502402ce400dab0ef patch
• https://git.kernel.org/stable/c/1b070ac9e99c2c2c3a8112943ca98ab6fca7f10c patch
• https://git.kernel.org/stable/c/23882b828c3c8c51d0c946446a396b10abb3b16b patch
• https://git.kernel.org/stable/c/3eabc6d47a0ad22b053329997aaf0ec1e581e392 patch
• https://git.kernel.org/stable/c/7c15c7c2878957cbfed93bcc29c13fdace464254 patch
• https://git.kernel.org/stable/c/98377e6b1a1a56561ec66a181573ea2b61b2079e patch