CVE-2024-45026 s390/dasd: fix error recovery leading to data corruption on ESE devices
A flaw in the s390/dasd driver causes data corruption on ESE devices during specific error recovery scenarios, requiring a kernel patch.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-45026?
CVE-2024-45026 is a high-severity vulnerability in Linux kernel, published on 11 Sep 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/dasd: fix error recovery leading to data corruption on ESE devices
Extent Space Efficient (ESE) or thin provisioned volumes need to be formatted on demand during usual IO processing.
The dasd_ese_needs_format function checks for error codes that signal the non existence of a proper track format.
The check for incorrect length is to imprecise since other error cases leading to transport of insufficient data also have this flag set. This might lead to data corruption in certain error cases for example during a storage server warmstart.
Fix by removing the check for incorrect length and replacing by explicitly checking for invalid track format in transport mode.
Also remove the check for file protected since this is not a valid ESE handling case.
Weakness: CWE-787
Which versions are affected by CVE-2024-45026?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-45026?
Apply the vendor's patch.
Is CVE-2024-45026 being exploited?
There is no known exploitation of CVE-2024-45026 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49187, AZL-49266, BELL-CVE-2024-45026, DEBIAN-CVE-2024-45026, GHSA-66cw-5j4x-3r2w, ROOT-OS-DEBIAN-11-CVE-2024-45026 and 1 more.