What is CVE-2023-54186?

CVE-2023-54186 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-30.

How severe is CVE-2023-54186?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2023-54186

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: fix pin_assignment_show This patch fixes negative indexing of buf array in pin_assignment_show when get_current_pin_assignments returns 0 i.e. no compatible pin assignments are found. BUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c ... Call trace: dump_backtrace+0x110/0x204 dump_stack_lvl+0x84/0xbc print_report+0x358/0x974 kasan_report+0x9c/0xfc __do_kernel_fault+0xd4/0x2d4 do_bad_area+0x48/0x168 do_tag_check_fault+0x24/0x38 do_mem_abort+0x6c/0x14c el1_abort+0x44/0x68 el1h_64_sync_handler+0x64/0xa4 el1h_64_sync+0x78/0x7c pin_assignment_show+0x26c/0x33c dev_attr_show+0x50/0xc0

EPSS: 0.002 (7.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, 4.19, 0

References

Frequently asked questions

What is CVE-2023-54186?: CVE-2023-54186 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-30.
How severe is CVE-2023-54186?: High severity. CVSS v3 base score is 7.8 out of 10.