CVE-2024-50152

smb: client: fix possible double free in smb2_set_ea()

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix possible double free in smb2_set_ea() Clang static checker(scan-build) warning： fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory. 1304 | kfree(ea); | ^~~~~~~~~ There is a double free in such case: 'ea is initialized to NULL' -> 'first successful memory allocation for ea' -> 'something failed, goto sea_exit' -> 'first memory release for ea' -> 'goto replay_again' -> 'second goto sea_exit before allocate memory for ea' -> 'second memory release for ea resulted in double free'. Re-initialie 'ea' to NULL near to the replay_again label, it can fix this double free problem.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/b1813c220b76f60b1727984794377c4aa849d4c1 patch
https://git.kernel.org/stable/c/c9f758ecf2562dfdd4adf12c22921b5de8366123 patch
https://git.kernel.org/stable/c/19ebc1e6cab334a8193398d4152deb76019b5d34 patch

Frequently Asked Questions

What is the severity of CVE-2024-50152?
CVE-2024-50152 has been scored as a medium severity vulnerability.
How to fix CVE-2024-50152?
To fix CVE-2024-50152, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-50152 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-50152 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-50152?
CVE-2024-50152 affects Linux Linux, Linux Linux.
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