CVE-2024-50159 firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()

What is CVE-2024-50159?

CVE-2024-50159 is a high-severity use after free vulnerability in Linux kernel, published on 7 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()

Clang static checker(scan-build) throws below warning： | drivers/firmware/arm_scmi/driver.c:line 2915, column 2 | Attempt to free released memory.

When devm_add_action_or_reset() fails, scmi_debugfs_common_cleanup() will run twice which causes double free of 'dbg->name'.

Remove the redundant scmi_debugfs_common_cleanup() to fix this problem.

Weakness: CWE-415

Which versions are affected by CVE-2024-50159?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-50159?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-50159 being exploited?

There is no known exploitation of CVE-2024-50159 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-52980, BELL-CVE-2024-50159, DEBIAN-CVE-2024-50159, GHSA-8r37-8jq6-q9m7, UBUNTU-CVE-2024-50159.