CVE-2024-42158 s390/pkey: Use kfree_sensitive() to fix Coccinelle warnings
The Linux kernel s390/pkey module failed to securely wipe sensitive memory before freeing it, potentially allowing attackers to read residual cryptographic data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-42158?
CVE-2024-42158 is a medium-severity vulnerability in Linux kernel, published on 30 Jul 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:
s390/pkey: Use kfree_sensitive() to fix Coccinelle warnings
Replace memzero_explicit() and kfree() with kfree_sensitive() to fix warnings reported by Coccinelle:
WARNING opportunity for kfree_sensitive/kvfree_sensitive (line 1506) WARNING opportunity for kfree_sensitive/kvfree_sensitive (line 1643) WARNING opportunity for kfree_sensitive/kvfree_sensitive (line 1770)
Weakness: CWE-669
Which versions are affected by CVE-2024-42158?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42158?
Apply the vendor's patch.
Is CVE-2024-42158 being exploited?
There is no known exploitation of CVE-2024-42158 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-47344, AZL-47396, BELL-CVE-2024-42158, DEBIAN-CVE-2024-42158, GHSA-7r4w-v667-c6cr, ROOT-OS-DEBIAN-11-CVE-2024-42158 and 2 more.