Privilege escalation in Linux kernel



| Updated: 2023-06-14
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-25265
CWE-ID CWE-913
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Control of Dynamically-Managed Code Resources

EUVDB-ID: #VU76191

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-25265

CWE-ID: CWE-913 - Improper Control of Dynamically-Managed Code Resources

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an error in Linux kernel due to certain binary files may have the exec-all attribute if they were built in approximately 2003 (e.g., with GCC 3.2.2 and Linux kernel 2.4.20). This can cause execution of bytes located in supposedly non-executable regions of a file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3 External links

https://github.com/torvalds/linux/blob/1c33bb0507508af24fd754dd7123bd8e997fab2f/arch/x86/include/asm/elf.h#L281-L294
https://github.com/x0reaxeax/exec-prot-bypass
https://security.netapp.com/advisory/ntap-20220318-0005/


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. However, proof of concept for this vulnerability is available.



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