What is CVE-2023-53803?

CVE-2023-53803 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2025-12-09.

How severe is CVE-2023-53803?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Linux

CVE-2023-53803

In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() A fix for: BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses] Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271 Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we expect the size to be sanitized before first access to addl_desc_ptr[1]. Make sure we don't walk beyond end of page.

EPSS: 0.002 (7.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Linux — versions 21fab1d0595eacf781705ec3509012a28f298245, 2.6.32, 0

References

Frequently asked questions

What is CVE-2023-53803?: CVE-2023-53803 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2025-12-09.
How severe is CVE-2023-53803?: High severity. CVSS v3 base score is 8.1 out of 10.