Vulnerability Details : CVE-2023-2513
A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.
Vulnerability category: Memory Corruption
Products affected by CVE-2023-2513
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-2513
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-2513
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2023-2513
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2023-2513
-
https://github.com/torvalds/linux/commit/67d7d8ad99be
ext4: fix use-after-free in ext4_xattr_set_entry · torvalds/linux@67d7d8a · GitHubPatch
-
https://lore.kernel.org/all/20220616021358.2504451-1-libaokun1@huawei.com/
[PATCH v3 0/4] ext4: fix use-after-free in ext4_xattr_set_entry - Baokun LiMailing List;Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=2193097
2193097 – (CVE-2023-2513) CVE-2023-2513 kernel: ext4: use-after-free in ext4_xattr_set_entry()Issue Tracking;Third Party Advisory
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