#VU102107 NULL pointer dereference in Linux kernel - CVE-2024-56593

Vulnerability identifier: #VU102107

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-2024-56593

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 brcmf_sdiod_sgtable_alloc() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.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/07c020c6d14d29e5a3ea4e4576b8ecf956a80834
https://git.kernel.org/stable/c/342f87d263462c2670b77ea9a32074cab2ac6fa1
https://git.kernel.org/stable/c/34941321b516bd7c6103bd01287d71a1804d19d3
https://git.kernel.org/stable/c/67a25ea28f8ec1da8894f2f115d01d3becf67dc7
https://git.kernel.org/stable/c/7522d7d745d13fbeff3350fe6aa56c8dae263571
https://git.kernel.org/stable/c/857282b819cbaa0675aaab1e7542e2c0579f52d7
https://git.kernel.org/stable/c/dfb3f9d3f602602de208da7bdcc0f6d5ee74af68

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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.