Memory leak in Linux kernel intel ixgbe driver

1) Memory leak

EUVDB-ID: #VU96321

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-2022-48896

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the ixgbe_get_first_secondary_devfn() and ixgbe_x550em_a_has_mii() functions in drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4 - 6.2 rc7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.0:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.7:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/53cefa802f070d46c0c518f4865be2c749818a18
https://git.kernel.org/stable/c/112df4cd2b09acd64bcd18f5ef83ba5d07b34bf0
https://git.kernel.org/stable/c/4c93422a54cd6a349988f42e1c6bf082cf4ea9d8
https://git.kernel.org/stable/c/c49996c6aa03590e4ef5add8772cb6068d99fd59
https://git.kernel.org/stable/c/b93fb4405fcb5112c5739c5349afb52ec7f15c07
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.164
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.89
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2

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.