#VU90897 Double free in Linux kernel - CVE-2024-26792
Vulnerability identifier: #VU90897
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:
CWE-ID:
CWE-415
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 double free error within the create_pending_snapshot() function in fs/btrfs/transaction.c, within the create_subvol() function in fs/btrfs/ioctl.c, within the btrfs_free_fs_info(), btrfs_init_fs_root(), btrfs_put_root() and btrfs_get_fs_root() functions in fs/btrfs/disk-io.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
https://git.kernel.org/stable/c/c34adc20b91a8e55e048b18d63f4f4ae003ecf8f
https://git.kernel.org/stable/c/eb3441093aad251418921246fc3b224fd1575701
https://git.kernel.org/stable/c/c8ab7521665bd0f8bc4a900244d1d5a7095cc3b9
https://git.kernel.org/stable/c/e2b54eaf28df0c978626c9736b94f003b523b451
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.
