Vulnerability Details : CVE-2024-50152
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2024-50152
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2024-50152
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 4 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2024-50152
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2024-11-13 |
CWE ids for CVE-2024-50152
-
The product calls free() twice on the same memory address.Assigned by: nvd@nist.gov (Primary)
References for CVE-2024-50152
-
https://git.kernel.org/stable/c/c9f758ecf2562dfdd4adf12c22921b5de8366123
smb: client: fix possible double free in smb2_set_ea() - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/b1813c220b76f60b1727984794377c4aa849d4c1
smb: client: fix possible double free in smb2_set_ea() - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/19ebc1e6cab334a8193398d4152deb76019b5d34
smb: client: fix possible double free in smb2_set_ea() - kernel/git/stable/linux.git - Linux kernel stable treePatch
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