#VU91354 Information disclosure in Linux kernel - CVE-2024-27066

Vulnerability identifier: #VU91354

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-27066

CWE-ID: CWE-200

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 gain access to sensitive information.

The vulnerability exists due to information disclosure within the virtqueue_add_indirect_packed(), virtqueue_add_packed() and detach_buf_packed() functions in drivers/virtio/virtio_ring.c. A local user can gain access to sensitive information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.6, 6.6 rc1, 6.6 rc2, 6.6 rc3, 6.6 rc4, 6.6 rc5, 6.6 rc6, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.6.6, 6.6.7, 6.6.8, 6.6.9, 6.6.10, 6.6.11, 6.6.12, 6.6.13, 6.6.14, 6.6.15, 6.6.16, 6.6.17, 6.6.18, 6.6.19, 6.6.20, 6.6.21, 6.6.22, 6.7, 6.7 rc1, 6.7 rc2, 6.7 rc3, 6.7 rc5, 6.7 rc6, 6.7 rc7, 6.7.1, 6.7.2, 6.7.3, 6.7.4, 6.7.5, 6.7.6, 6.7.7, 6.7.8, 6.7.9, 6.7.10, 6.8, 6.8 rc1, 6.8 rc2, 6.8 rc5, 6.8.1

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External links
https://git.kernel.org/stable/c/e142169aca5546ae6619c39a575cda8105362100
https://git.kernel.org/stable/c/75450ff8c6fe8755bf5b139b238eaf9739cfd64e
https://git.kernel.org/stable/c/51bacd9d29bf98c3ebc65e4a0477bb86306b4140
https://git.kernel.org/stable/c/d5c0ed17fea60cca9bc3bf1278b49ba79242bbcd
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.23
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.11
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.2

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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.