{"id":"CVE-2023-54186","summary":"usb: typec: altmodes/displayport: fix pin_assignment_show","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmodes/displayport: fix pin_assignment_show\n\nThis patch fixes negative indexing of buf array in pin_assignment_show\nwhen get_current_pin_assignments returns 0 i.e. no compatible pin\nassignments are found.\n\nBUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c\n...\nCall trace:\ndump_backtrace+0x110/0x204\ndump_stack_lvl+0x84/0xbc\nprint_report+0x358/0x974\nkasan_report+0x9c/0xfc\n__do_kernel_fault+0xd4/0x2d4\ndo_bad_area+0x48/0x168\ndo_tag_check_fault+0x24/0x38\ndo_mem_abort+0x6c/0x14c\nel1_abort+0x44/0x68\nel1h_64_sync_handler+0x64/0xa4\nel1h_64_sync+0x78/0x7c\npin_assignment_show+0x26c/0x33c\ndev_attr_show+0x50/0xc0","modified":"2026-04-02T09:45:40.108105Z","published":"2025-12-30T12:08:55.882Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0316-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0617-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54186.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/08bd1be1c716fd50a7df48f82dcbc59a103082b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f9c0a7c272626cb6716ffc7800e8c73260cdce6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/54ee23e4ab263a495ace1eed43d3883212ece17f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8f28269dd4bf9b55c3fb376ae31512730a96fce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc0e18f95c88435bd8a1ceb540243cd7fbcd9781"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ff466f77d0a56719979c4234abd412abd98eae8f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54186.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54186"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588"},{"fixed":"0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2"},{"fixed":"4f9c0a7c272626cb6716ffc7800e8c73260cdce6"},{"fixed":"ff466f77d0a56719979c4234abd412abd98eae8f"},{"fixed":"fc0e18f95c88435bd8a1ceb540243cd7fbcd9781"},{"fixed":"08bd1be1c716fd50a7df48f82dcbc59a103082b5"},{"fixed":"54ee23e4ab263a495ace1eed43d3883212ece17f"},{"fixed":"d8f28269dd4bf9b55c3fb376ae31512730a96fce"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54186.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.19.0"},{"fixed":"4.19.284"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.244"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.181"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.30"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.3.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54186.json"}}],"schema_version":"1.7.5"}