7.8

CVE-2023-54186: usb: typec: altmodes/displayport: fix pin_assignment_show

Deferred
AliasesUBUNTU-CVE-2023-54186DEBIAN-CVE-2023-54186
Published 30-12-2025Last modified 05-08-2026

Vulnerability summary

CVE-2023-54186 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 5
RHSA-2024:2394RHSA-2024:3138SUSE-SU-2026:0263-1SUSE-SU-2026:0316-1SUSE-SU-2026:0317-1SUSE-SU-2026:0411-1

Timeline

  1. 30-12-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu120 products
  • linux< 5.4.0-162.179 | < 5.15.0-83.92
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1109.118 | < 5.15.0-1044.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.37-1 | < 6.3.7-1
Linux1 product
  • linux≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < 0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < 4f9c0a7c272626cb6716ffc7800e8c73260cdce6 | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < ff466f77d0a56719979c4234abd412abd98eae8f | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < fc0e18f95c88435bd8a1ceb540243cd7fbcd9781 | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < 08bd1be1c716fd50a7df48f82dcbc59a103082b5 | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < 54ee23e4ab263a495ace1eed43d3883212ece17f | ≥ 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588, < d8f28269dd4bf9b55c3fb376ae31512730a96fce | 4.19

3 vendors · 122 products

References

11 links
Show all 11 references