#VU104678 Improper locking in Linux kernel - CVE-2022-49584

Vulnerability identifier: #VU104678

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49584

CWE-ID: CWE-667

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the ixgbe_enable_sriov(), ixgbe_rcv_ack_from_vf() and ixgbe_msg_task() functions in drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c, within the ixgbe_sw_init() function in drivers/net/ethernet/intel/ixgbe/ixgbe_main.c. A local user can perform a denial of service (DoS) attack.

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/031af9e617a6f51075d97e56fc9e712c7dde2508
https://git.kernel.org/stable/c/16f929a5e76fd047fd8697e1e568bdd7d771955c
https://git.kernel.org/stable/c/1e53834ce541d4fe271cdcca7703e50be0a44f8a
https://git.kernel.org/stable/c/9d925d2dc82cec2bcbd8625457645d8a548ab22e
https://git.kernel.org/stable/c/b82de63f8f817b5735480293dda8e92ba8170c52

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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.