NULL pointer dereference in Linux kernel uio driver

1) NULL pointer dereference

EUVDB-ID: #VU97528

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-46739

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 hv_uio_channel_cb() function in drivers/uio/uio_hv_generic.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

http://git.kernel.org/stable/c/3d414b64ecf6fd717d7510ffb893c6f23acbf50e
http://git.kernel.org/stable/c/f38f46da80a2ab7d1b2f8fcb444c916034a2dac4
http://git.kernel.org/stable/c/1d8e020e51ab07e40f9dd00b52f1da7d96fec04c
http://git.kernel.org/stable/c/3005091cd537ef8cdb7530dcb2ecfba8d2ef475c
http://git.kernel.org/stable/c/2be373469be1774bbe03b0fa7e2854e65005b1cc
http://git.kernel.org/stable/c/de6946be9c8bc7d2279123433495af7c21011b99
http://git.kernel.org/stable/c/928e399e84f4e80307dce44e89415115c473275b
http://git.kernel.org/stable/c/fb1adbd7e50f3d2de56d0a2bb0700e2e819a329e

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.