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CVE-2022-50809— xhci: dbc: Fix memory leak in xhci_alloc_dbc()

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xhci_alloc_dbc函数存在内存泄漏，可能导致内存泄露。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 11

VendorProduct Version RangeStatus
Linux Linux d7afb4a13f6c6ee7df7d0bfc67b4ef19ece6d802< 103b459590e1eb4d80b02761eb36c7cae1d9b58e affected
534675942e901959b5d8dc11ea526c4e48817d8e< 116d6a6964986ea7eb516daa36128d270f1f248d affected
534675942e901959b5d8dc11ea526c4e48817d8e< 69e67c804d09a6b1bcda1f4f242f151f813eeb4a affected
534675942e901959b5d8dc11ea526c4e48817d8e< d591b32e519603524a35b172156db71df9116902 affected
5.15.58< 5.15.75 affected
5.18 affected
< 5.18 unaffected
5.15.75≤ 5.15.* unaffected
… +3 more rows
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I. Basic Information for CVE-2022-50809

Vulnerability Information
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Vulnerability Title
xhci: dbc: Fix memory leak in xhci_alloc_dbc()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xhci: dbc: Fix memory leak in xhci_alloc_dbc() If DbC is already in use, then the allocated memory for the xhci_dbc struct doesn't get freed before returning NULL, which leads to a memleak.
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xhci_alloc_dbc函数存在内存泄漏，可能导致内存泄露。
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 d7afb4a13f6c6ee7df7d0bfc67b4ef19ece6d802 ~ 103b459590e1eb4d80b02761eb36c7cae1d9b58e -
Linux Linux 5.18 -

II. Public POCs for CVE-2022-50809

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III. Intelligence Information for CVE-2022-50809

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Other References for CVE-2022-50809 (4)

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-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
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-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
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-2023-54250 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-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54317 7.8 HIGH dm flakey: don't corrupt the zero page
CVE-2022-50841 7.8 HIGH fs/ntfs3: Add overflow check for attribute size
CVE-2023-54201 7.8 HIGH RDMA/efa: Fix wrong resources deallocation order

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-2022-50809

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