#VU88285 Memory leak in Linux kernel - CVE-2023-50431

Vulnerability identifier: #VU88285

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-50431

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description
The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due memory leak within the sec_attest_info() function in drivers/accel/habanalabs/common/habanalabs_ioctl.c. A local user can cause information leak to user space.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://lists.freedesktop.org/archives/dri-devel/2023-November/431772.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a9f07790a4b2250f0140e9a61c7f842fd9b618c7

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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.