#VU90201 Use-after-free in Linux kernel - CVE-2024-26892

Vulnerability identifier: #VU90201

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-26892

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the mt792x_irq_handler() function in drivers/net/wireless/mediatek/mt76/mt792x_dma.c, within the mt7921_pci_remove() function in drivers/net/wireless/mediatek/mt76/mt7921/pci.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/c7dd42fbebcfb02bef070fd48f774d6412d0b49d
https://git.kernel.org/stable/c/bfe1adf1606f76c180324e53b130f0e76d5cc6c3
https://git.kernel.org/stable/c/bfeaef901194c5923ce3330272786eff2fac513a
https://git.kernel.org/stable/c/c957280ef6ab6bdf559a91ae693a6b34310697e3

---

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.