CVE-2023-4610
kernel: KASAN: slab-use-after-free Read in radix_tree_lookup while fuzzing Linux kernel 6.4-rc6 with syzkaller.
Severity
UnknownRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 4, 2023
Updated · November 22, 2025
Description
A use-after-free flaw was found in radix_tree_lookup in ./lib/radix-tree.c in the Radix tree node cache in the Linux Kernel. This issue could allow a local attacker to crash the system and could lead to a kernel information leak problem.
Statement
The SRCU code was added in upstream kernel v6.4-rc1 and removed before v6.4. This bug only existed in development kernels. Please see https://lore.kernel.org/all/[email protected] and https://bugzilla.suse.com/show_bug.cgi?id=1215932 for more information.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:N
CWE-416 · Use After Free