CVE-2023-4273Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry
Updated under an hour ago ()
Does this affect you?
It affects Red Hat Enterprise Linux 9 and 8 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 6.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Red Hat Red Hat Enterprise Linux 9 redhat:enterprise_linux | from 0:5.14.0-362.8.1.el9_3 not affected | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | before 6.4; 6.5; 6.5; 6.5; 6.5 | NVD |
fedoraproject fedora fedoraproject:fedora | 37; 38 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 9.0 | NVD |
debian debian_linux debian:debian_linux | 11.0; 12.0 | NVD |
netapp h300s_firmware netapp:h300s_firmware | all versions | NVD |
netapp h500s_firmware netapp:h500s_firmware | all versions | NVD |
netapp h700s_firmware netapp:h700s_firmware | all versions | NVD |
netapp h410s_firmware netapp:h410s_firmware | all versions | NVD |
References
- https://access.redhat.com/errata/RHSA-2023:6583vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2023-4273vdb-entry, x-refsource-redhat, third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2221609issue-tracking, x-refsource-redhat, patch, third-party-advisory
- https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/exploit, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/
- https://security.netapp.com/advisory/ntap-20231027-0002/
- https://www.debian.org/security/2023/dsa-5480
- https://www.debian.org/security/2023/dsa-5492
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- https://cert-portal.siemens.com/productcert/html/ssa-831302.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.