#VU104604 NULL pointer dereference in Linux kernel - CVE-2022-49569

Vulnerability identifier: #VU104604

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-2022-49569

CWE-ID: CWE-476

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 NULL pointer dereference within the bcm2835_spi_handle_err() function in drivers/spi/spi-bcm2835.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

---

External links
https://git.kernel.org/stable/c/49ffa473218012e765682343de2052eb4c1f06a7
https://git.kernel.org/stable/c/4ceaa684459d414992acbefb4e4c31f2dfc50641
https://git.kernel.org/stable/c/58466e05390043d2805685c70f55f3f59711bdf2
https://git.kernel.org/stable/c/684896e675edd8b669fd3e9f547c5038222d85bc
https://git.kernel.org/stable/c/76668d2a2f367d25ff448e6d7087406af7d7bb2b

---

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.