#VU92306 Use-after-free in Linux kernel - CVE-2024-38545

Vulnerability identifier: #VU92306

Vulnerability risk: Low

CVSSv4.0: [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-2024-38545

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 alloc_cqc(), free_cqc() and hns_roce_cq_event() functions in drivers/infiniband/hw/hns/hns_roce_cq.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/763780ef0336a973e933e40e919339381732dcaf
http://git.kernel.org/stable/c/63da190eeb5c9d849b71f457b15b308c94cbaf08
http://git.kernel.org/stable/c/39d26cf46306bdc7ae809ecfdbfeff5aa1098911
http://git.kernel.org/stable/c/37a7559dc1358a8d300437e99ed8ecdab0671507
http://git.kernel.org/stable/c/a942ec2745ca864cd8512142100e4027dc306a42

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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.