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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于displayport altmode的pin_assignment_show函数存在缓冲区负索引，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1003 · OS Credential Dumping

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 4f9c0a7c272626cb6716ffc7800e8c73260cdce6 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< ff466f77d0a56719979c4234abd412abd98eae8f affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< fc0e18f95c88435bd8a1ceb540243cd7fbcd9781 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 08bd1be1c716fd50a7df48f82dcbc59a103082b5 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 54ee23e4ab263a495ace1eed43d3883212ece17f affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< d8f28269dd4bf9b55c3fb376ae31512730a96fce affected
4.19 affected
… +8 more rows
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I. Basic Information for CVE-2023-54186

Vulnerability Information
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Vulnerability Title
usb: typec: altmodes/displayport: fix pin_assignment_show
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于displayport altmode的pin_assignment_show函数存在缓冲区负索引，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 ~ 0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2 -
Linux Linux 4.19 -

II. Public POCs for CVE-2023-54186

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III. Intelligence Information for CVE-2023-54186

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Other References for CVE-2023-54186 (7)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54216 7.8 HIGH net/mlx5e: TC, Fix using eswitch mapping in nic mode
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54186

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