Vulnerability identifier: #VU76191

Vulnerability risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-25265

CWE-ID: CWE-913

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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:

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

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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.