CVE-2023-52690: powerpc/powernv: Add a null pointer check to scom_debug_init_one()

Severity: medium (CVSS 5.5 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: 2024-05-17 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check to scom_debug_init_one() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Add a null pointer check, and release 'ent' to avoid memory leaks.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.4 before 5.4.268; from 5.5 before 5.10.209; from 5.11 before 5.15.148; from 5.16 before 6.1.75; from 6.2 before 6.6.14; from 6.7 before 6.7.2 — fixed in 5.10.209, 5.15.148, 5.4.268, 6.1.75, 6.6.14, 6.7.2

How to fix

Upgrade to a fixed version: Linux kernel 5.10.209, 5.15.148, 5.4.268, 6.1.75. Check the vendor advisory for mitigations.

References

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