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CVE-2023-4273

Public on 2023-08-09
Modified on 2024-01-12
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.

Severity
Medium
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CVSS v3 Base Score
6.0
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Kernel-5.10 Extra kernel 2023-08-31 22:50 ALAS2KERNEL-5.10-2023-039
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-08-31 22:46 ALAS2KERNEL-5.15-2023-026
Amazon Linux 2023 kernel 2023-08-31 21:45 ALAS2023-2023-330

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD CVSSv3 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

Red Hat: CVE-2023-4273 Mitre: CVE-2023-4273 FAQs regarding Amazon Linux ALAS/CVE Severity