Privilege escalation in Linux kernel ext4
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-1252 |
| CWE-ID | CWE-416 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
| Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU82761
Risk: Low
CVSSv3.1: 6.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-1252
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Linux kernel’s Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: 5.15 - 5.15.2
External linkshttp://lore.kernel.org/lkml/20211115165433.449951285@linuxfoundation.org/
http://security.netapp.com/advisory/ntap-20230505-0005/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
