#VU102038 Use-after-free in Linux kernel - CVE-2024-56584

Vulnerability identifier: #VU102038

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-2024-56584

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 io_init_wq_offload() function in io_uring/tctx.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
https://git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e
https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4
https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0
https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d

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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.