#VU90081 Use-after-free in Linux kernel - CVE-2023-52859

Vulnerability identifier: #VU90081

Vulnerability risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2023-52859

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the hisi_sllc_pmu_probe() function in drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c, within the hisi_pa_pmu_probe() function in drivers/perf/hisilicon/hisi_uncore_pa_pmu.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
http://git.kernel.org/stable/c/0e1e88bba286621b886218363de07b319d6208b2
http://git.kernel.org/stable/c/b660420f449d094b1fabfa504889810b3a63cdd5
http://git.kernel.org/stable/c/3405f364f82d4f5407a8b4c519dc15d24b847fda
http://git.kernel.org/stable/c/75bab28ffd05ec8879c197890b1bd1dfec8d3f63
http://git.kernel.org/stable/c/b805cafc604bfdb671fae7347a57f51154afa735

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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.