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CVE-2023-54299— usb: typec: bus: verify partner exists in typec_altmode_attention

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，该漏洞源于未验证设备altmode伙伴是否存在，可能导致空指针取消引用。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 8a37d87d72f0c69f837229c04d2fcd7117ea57e7< 5f71716772b88cbe0e1788f6a38d7871aff2120b affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< 38e1f2ee82bacbbfded8f1c06794a443d038d054 affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< 0ad6bad31da692f8d7acacab07eabe7586239ae0 affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< 0d3b5fe47938e9c451466845304a2bd74e967a80 affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< d49547950bf7f3480d6ca05fe055978e5f0d9e5b affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< 1101867a1711c27d8bbe0e83136bec47f8c1ca2a affected
8a37d87d72f0c69f837229c04d2fcd7117ea57e7< f23643306430f86e2f413ee2b986e0773e79da31 affected
4.19 affected
… +8 more rows
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I. Basic Information for CVE-2023-54299

Vulnerability Information
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Vulnerability Title
usb: typec: bus: verify partner exists in typec_altmode_attention
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: typec: bus: verify partner exists in typec_altmode_attention Some usb hubs will negotiate DisplayPort Alt mode with the device but will then negotiate a data role swap after entering the alt mode. The data role swap causes the device to unregister all alt modes, however the usb hub will still send Attention messages even after failing to reregister the Alt Mode. type_altmode_attention currently does not verify whether or not a device's altmode partner exists, which results in a NULL pointer error when dereferencing the typec_altmode and typec_altmode_ops belonging to the altmode partner. Verify the presence of a device's altmode partner before sending the Attention message to the Alt Mode driver.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于未验证设备altmode伙伴是否存在，可能导致空指针取消引用。
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 8a37d87d72f0c69f837229c04d2fcd7117ea57e7 ~ 5f71716772b88cbe0e1788f6a38d7871aff2120b -
Linux Linux 4.19 -

II. Public POCs for CVE-2023-54299

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III. Intelligence Information for CVE-2023-54299

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Other References for CVE-2023-54299 (7)

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

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
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-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
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-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
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-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
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-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54243 7.8 HIGH netfilter: ebtables: fix table blob use-after-free

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-2023-54299

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