Out-of-bounds read in Linux kernel - CVE-2026-74287

Vulnerability identifier: #VU142901

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-74287

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in SCTP parameter processing when parsing malformed embedded address parameters in INIT or ASCONF messages. A remote attacker can send a specially crafted SCTP parameter with an embedded address length that exceeds the enclosing parameter bounds to disclose sensitive information.

The issue affects ADD_IP, DEL_IP, and SET_PRIMARY parameters that contain embedded address parameters.

Linux kernel
openEuler
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-extra-modules

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
python3-perf-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
python3-perf - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
perf-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
perf - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools-devel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-source - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-headers - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-devel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-debugsource - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
bpftool-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
bpftool - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-extra-modules - update to 6.6.0-145.3.29.160

• https://git.kernel.org/stable/c/06c8bf48505f2fef265931db82d5003d302a347b
• https://git.kernel.org/stable/c/0c674b20c9cdb54f8a46c88b4d00cadf82b8f0c0
• https://git.kernel.org/stable/c/28ba1d3c956604a89168adfb4c97cfc6c509bba5
• https://git.kernel.org/stable/c/3a44b2602d57e11e2eb85958d4cd500d14a27d9e
• https://git.kernel.org/stable/c/85f54cf589163a75fa06e37d8c2a4a72824c6dd1
• https://git.kernel.org/stable/c/92e4adfee56f32a963ebb105c6cd9a1ed707262a
• https://git.kernel.org/stable/c/e9361d0ca55c4af12aac09e2572852fa91046229
• https://git.kernel.org/stable/c/ed8605c6f39b9b84f9a4631db6deb25e7f1e973c

• Out-of-bounds read in Linux kernel sctp
• openEuler 24.03 LTS SP3 update for kernel
• openEuler 24.03 LTS SP1 update for kernel