Vulnerability identifier: #VU75204

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1611

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the btrfs_search_slot() function in fs/btrfs/ctree.c. A local user can trigger a use-after-free error and crash the kernel.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=2181342
http://lore.kernel.org/linux-btrfs/35b9a70650ea947387cf352914a8774b4f7e8a6f.1679481128.git.fdmanana@suse.com/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZWECAZ7V7EPSXMINO6Q6KWNKDY2CO6ZW/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5QCM6XO4HSPLGR3DFYWFRIA3GCBIHZR4/

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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.