medium
6.7
CWE
787 121
Advisory Published
CVE Published
Updated

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

First published: Mon Jul 10 2023(Updated: )

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.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.5
6.5
Linux kernel<6.4
Linux kernel=6.5-rc1
Linux kernel=6.5-rc2
Linux kernel=6.5-rc3
Linux kernel=6.5-rc4
Fedora=38
Red Hat Enterprise Linux=9.0
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1
Fedora=37
Debian=11.0
Debian=12.0
All of
NetApp H300S Firmware
NetApp H300S
All of
NetApp H500S Firmware
NetApp H500s
All of
NetApp H700S
NetApp H700S
All of
NetApp H410S Firmware
NetApp H410S Firmware

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=2221609

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-4273?

    CVE-2023-4273 has been classified with a moderate severity level due to its potential impact on the integrity and availability of file operations.

  • How do I fix CVE-2023-4273?

    To fix CVE-2023-4273, you should upgrade to the latest kernel version above 6.5 or install recommended patches provided by your distribution.

  • Which Linux versions are affected by CVE-2023-4273?

    CVE-2023-4273 affects Linux kernel versions up to 6.4 and specific release candidates of 6.5.

  • Does CVE-2023-4273 affect all Linux distributions?

    CVE-2023-4273 primarily affects Linux distributions based on certain kernels, including Red Hat, Debian, and Fedora.

  • What potential impact does CVE-2023-4273 have on systems?

    The vulnerability could lead to file system corruption and may allow unauthorized access or data loss in systems using the affected exFAT driver.

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