#VU94940 Use-after-free in Linux kernel - CVE-2024-42073

Vulnerability identifier: #VU94940

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-2024-42073

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 mlxsw_sp_sb_sr_occ_query_cb(), mlxsw_reg_sbsr_pack() and mlxsw_sp_sb_occ_max_clear() functions in drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e
https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36
https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a
https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13

---

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.