CVE-2026-23359

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stack-out-of-bounds write in devmap get_upper_ifindexes() iterates over all upper devices and writes their indices into an array without checking bounds. Also the callers assume that the max number of upper devices is MAX_NEST_DEV and allocate excluded_devices[1+MAX_NEST_DEV] on the stack, but that assumption is not correct and the number of upper devices could be larger than MAX_NEST_DEV (e.g., many macvlans), causing a stack-out-of-bounds write. Add a max parameter to get_upper_ifindexes() to avoid the issue. Whe...

Affected product and versions

Product

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

Affected versions

>= aeea1b86f9363f3feabb496534d886f082a89f21 < 88df604f0d16a692867582350ce3f2fcd22243f1, >= aeea1b86f9363f3feabb496534d886f082a89f21 < 5000e40acc8d0c36ab709662e32120986ac22e7e, >= aeea1b86f9363f3feabb496534d886f082a89f21 < 8a95fb9df1105b1618872c2846a6c01e3ba20b45, >= aeea1b86f9363f3feabb496534d886f082a89f21 < d2c31d8e03d05edc16656e5ffe187f0d1da763d7, >= aeea1b86f9363f3feabb496534d886f082a89f21 < 75d474702b2ba8b6bcb26eb3004dbc5e95ffd5d2, >= aeea1b86f9363f3feabb496534d886f082a89f21 < ca831567908fd3f73cf97d8a6c09a5054697a182, >= aeea1b86f9363f3feabb496534d886f082a89f21 < b7bf516c3ecd9a2aae2dc2635178ab87b734fef1, >= 5.15, >= V3.1.6, >= V3.1.5, >= 5.15.1 < 5.15.203, >= 5.16 < 6.1.167, >= 6.2 < 6.6.130, >= 6.7 < 6.12.77, >= 6.13 < 6.18.17, >= 6.19 < 6.19.7, 5.15, 7.0

Fixed versions

5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787