CVE-2024-50143 udf: fix uninit-value use in udf_get_fileshortad
A local attacker can read uninitialized kernel memory via a crafted UDF filesystem image, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-50143?
CVE-2024-50143 is a high-severity vulnerability in Linux kernel, published on 7 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel, the following vulnerability has been resolved:
udf: fix uninit-value use in udf_get_fileshortad
Check for overflow when computing alen in udf_current_aext to mitigate later uninit-value use in udf_get_fileshortad KMSAN bug[1]. After applying the patch reproducer did not trigger any issue[2].
[1] https://syzkaller.appspot.com/bug?extid=8901c4560b7ab5c2f9df [2] https://syzkaller.appspot.com/x/log.txt?x=10242227980000
Weakness: CWE-908
Which versions are affected by CVE-2024-50143?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50143?
Apply the vendor's patch.
Is CVE-2024-50143 being exploited?
There is no known exploitation of CVE-2024-50143 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53322, AZL-53349, BELL-CVE-2024-50143, DEBIAN-CVE-2024-50143, GHSA-9g24-qqwh-54ww, ROOT-OS-DEBIAN-11-CVE-2024-50143 and 1 more.