#VU104478 Use-after-free in Linux kernel - CVE-2022-49063

Vulnerability identifier: #VU104478

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-2022-49063

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 ice_vsi_req_irq_msix(), ice_setup_pf_sw() and ice_suspend() functions in drivers/net/ethernet/intel/ice/ice_main.c, within the ice_vsi_free_irq() function in drivers/net/ethernet/intel/ice/ice_lib.c, within the ice_free_cpu_rx_rmap(), ice_set_cpu_rx_rmap(), ice_remove_arfs() and ice_rebuild_arfs() functions in drivers/net/ethernet/intel/ice/ice_arfs.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/d08d2fb6d99d82da1c63aba5c0d1c6f237e150f3
https://git.kernel.org/stable/c/d7442f512b71fc63a99c8a801422dde4fbbf9f93

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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.