Use-after-free in Linux kernel - CVE-2024-26616

Vulnerability identifier: #VU90229

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2024-26616

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the scrub_read_endio() and scrub_submit_initial_read() functions in fs/btrfs/scrub.c. A local user can escalate privileges on the system.

Linux kernel
Ubuntu
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-6.5.0-41-generic-64k (Ubuntu package)
linux-image-6.5.0-41-generic (Ubuntu package)
linux-image-6.5.0-1017-laptop (Ubuntu package)
linux-image-laptop-23.10 (Ubuntu package)
linux-image-6.5.0-1021-nvidia-64k (Ubuntu package)
linux-image-6.5.0-1021-nvidia (Ubuntu package)
linux-image-nvidia-6.5 (Ubuntu package)
linux-image-nvidia-64k-6.5 (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-6.5.0-1022-oem (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)

Install update from vendor's website.

Linux kernel - addressed in versions 6.6.15, 6.7.3, 6.8
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-6.5.0-41-generic-64k (Ubuntu package) - update to 6.5.0-41.41~22.04.2
linux-image-6.5.0-41-generic (Ubuntu package) - update to 6.5.0-41.41~22.04.2
linux-image-6.5.0-1017-laptop (Ubuntu package) - update to 6.5.0-1017.20
linux-image-laptop-23.10 (Ubuntu package) - update to 6.5.0.1017.20
linux-image-6.5.0-1021-nvidia-64k (Ubuntu package) - update to 6.5.0-1021.22
linux-image-6.5.0-1021-nvidia (Ubuntu package) - update to 6.5.0-1021.22
linux-image-nvidia-6.5 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-64k-6.5 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-hwe-22.04 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-6.5.0-1022-oem (Ubuntu package) - update to 6.5.0-1022.23
linux-image-oem-22.04d (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04c (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04b (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04a (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04 (Ubuntu package) - update to 6.5.0.1022.24

• https://git.kernel.org/stable/c/642b9c520ef2f104277ad1f902f8526edbe087fb
• https://git.kernel.org/stable/c/34de0f04684ec00c093a0455648be055f0e8e24f
• https://git.kernel.org/stable/c/f546c4282673497a06ecb6190b50ae7f6c85b02f
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.15
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8

• Use-after-free in Linux kernel btrfs
• Ubuntu update for linux-oem-6.5
• Ubuntu update for linux-laptop
• Ubuntu update for linux-nvidia-6.5
• Ubuntu update for linux-hwe-6.5