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6.0 Medium

CVE-2023-4273 Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry

Description

A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.

CVSS 3.1 detail

Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploitable with local access to the machine, with an administrator account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Local
Attack complexity
Low
Privileges required
High
Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 earliest → < 1.1 1.1

Other CVEs of Red Hat Enterprise Linux 9

The 1866 CVEs of Red Hat Enterprise Linux 9 →
CVE-2026-123876 Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation 4.4 Medium CVE-2026-120749 Dbus: dbus-daemon: dbus-daemon aborts (reply_serial != 0) when a broadcast from the driver cannot be delivered to a monitored bus 6.2 Medium CVE-2026-123037 Ansible-core: user module generate_ssh_key follows a symlinked ~/.ssh enabling local privilege escalation (incomplete fix of cve-2024-9902) 6.7 Medium CVE-2026-123151 Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail Not rated
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