usb: typec: altmodes/displayport: fix pin_assignment_show (CVE-2023-54186) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2023-54186

usb: typec: altmodes/displayport: fix pin_assignment_show

Answer in brief

CVE-2023-54186 records a Unknown severity vulnerability in usb: typec: altmodes/displayport: fix pin_assignment_show. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Dec 30, 2025Updated Aug 5, 2026Source checked Sep 19, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <4f9c0a7c272626cb6716ffc7800e8c73260cdce6 \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <ff466f77d0a56719979c4234abd412abd98eae8f \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <fc0e18f95c88435bd8a1ceb540243cd7fbcd9781 \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <08bd1be1c716fd50a7df48f82dcbc59a103082b5 \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <54ee23e4ab263a495ace1eed43d3883212ece17f \|\| >=0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 <d8f28269dd4bf9b55c3fb376ae31512730a96fce	0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2, 4f9c0a7c272626cb6716ffc7800e8c73260cdce6, ff466f77d0a56719979c4234abd412abd98eae8f, fc0e18f95c88435bd8a1ceb540243cd7fbcd9781, 08bd1be1c716fd50a7df48f82dcbc59a103082b5, 54ee23e4ab263a495ace1eed43d3883212ece17f, d8f28269dd4bf9b55c3fb376ae31512730a96fce
Linux/Linuxgeneric	4.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

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

Quoted source text, attributed separately from HOL analysis.