NULL pointer dereference in Linux kernel driver-api fpga

1) NULL pointer dereference

EUVDB-ID: #VU93123

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-2024-36479

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 fpga_bridge_disable(), of_fpga_bridge_get(), fpga_bridge_dev_match(), fpga_bridge_get(), fpga_bridge_put(), ATTRIBUTE_GROUPS(), fpga_bridge_register() and ERR_PTR() functions in drivers/fpga/fpga-bridge.c, within the fpga_bridge_register() function in Documentation/driver-api/fpga/fpga-bridge.rst. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.6.32

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.6:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/d7c4081c54a1d4068de9440957303a76f9e5c95b
https://git.kernel.org/stable/c/6896b6b2e2d9ec4e1b0acb4c1698a75a4b34d125
https://git.kernel.org/stable/c/1da11f822042eb6ef4b6064dc048f157a7852529
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.120
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.33

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.