CVE-2024-53126: vdpa: solidrun: Fix UB bug with devres

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-04 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: vdpa: solidrun: Fix UB bug with devres In psnet_open_pf_bar() and snet_open_vf_bar() a string later passed to pcim_iomap_regions() is placed on the stack. Neither pcim_iomap_regions() nor the functions it calls copy that string. Should the string later ever be used, this, consequently, causes undefined behavior since the stack frame will by then have disappeared. Fix the bug by allocating the strings on the heap through devm_kasprintf().

Affected products

Linux kernel: through 6.3; from 6.6.0 before 6.6.63; from 6.11.0 before 6.11.10 — fixed in 6.11.10, 6.6.63

How to fix

Upgrade to a fixed version: Linux kernel 6.11.10, 6.6.63. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-53126 or the next vulnerability affects your stack