CVE-2023-54186

usb: typec: altmodes/displayport: fix pin_assignment_show

HIGH

7.8

CVSS Score

Published: December 30, 2025 at 12:08 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.19 ≤ v < 4.19.2844.19 ≤ v < 5.10.1814.19 ≤ v < 5.15.1134.19 ≤ v < 5.4.2444.19 ≤ v < 6.1.304.19 ≤ v < 6.3.44.19 ≤ v < 6.40e3bb7d6894d9b6e67d6382bb03a46a1dc9895884.19

Vendor states this is fixed in 08bd1be1c716fd50a7df48f82dcbc59a103082b5 (fixed)

Vendor states this is fixed in 0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 (fixed)

Vendor states this is fixed in 4f9c0a7c272626cb6716ffc7800e8c73260cdce6 (fixed)

Vendor states this is fixed in 54ee23e4ab263a495ace1eed43d3883212ece17f (fixed)

Vendor states this is fixed in d8f28269dd4bf9b55c3fb376ae31512730a96fce (fixed)

Vendor states this is fixed in fc0e18f95c88435bd8a1ceb540243cd7fbcd9781 (fixed)

Vendor states this is fixed in ff466f77d0a56719979c4234abd412abd98eae8f (fixed)

Vendor states this is fixed in 4.19 (unaffected)

Vendor states this is fixed in 4.19.284 (unaffected)

Vendor states this is fixed in 5.10.181 (unaffected)

Vendor states this is fixed in 5.15.113 (unaffected)

Vendor states this is fixed in 5.4.244 (unaffected)