CVE-2022-50809
published 2025-12-30CVE-2022-50809: 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…
PriorityP419low5.5
EPSS
0.21%
11.8th percentile
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.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.3-1 (bookworm) | linux 6.0.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 5.15.58 < 5.15.75 | 5.15.75 |
| linux | linux | >= 534675942e901959b5d8dc11ea526c4e48817d8e < 116d6a6964986ea7eb516daa36128d270f1f248d | 116d6a6964986ea7eb516daa36128d270f1f248d |
| linux | linux | >= 534675942e901959b5d8dc11ea526c4e48817d8e < 69e67c804d09a6b1bcda1f4f242f151f813eeb4a | 69e67c804d09a6b1bcda1f4f242f151f813eeb4a |
| linux | linux | >= 534675942e901959b5d8dc11ea526c4e48817d8e < d591b32e519603524a35b172156db71df9116902 | d591b32e519603524a35b172156db71df9116902 |
| linux | linux | >= d7afb4a13f6c6ee7df7d0bfc67b4ef19ece6d802 < 103b459590e1eb4d80b02761eb36c7cae1d9b58e | 103b459590e1eb4d80b02761eb36c7cae1d9b58e |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 6.0.3-1 | 6.0.3-1 |
| linux | linux_kernel | >= 0 < 5.15.75 | 5.15.75 |
| linux | linux_kernel | >= 5.16.0 < 5.19.17 | 5.19.17 |
| linux | linux_kernel | >= 5.18.0 < 6.0.3 | 6.0.3 |
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Red Hat
kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
vendor_redhat·2025-12-30·CVSS 5.5
CVE-2022-50809 [LOW] CWE-772 kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
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.
A flaw was found in the Linux kernel's xHCI Debug Capability (DbC) module. A local user with low privileges could exploit a memory leak in the xhci_alloc_dbc() function. This occurs when the DbC is already in use, and allocated memory for the xhci_dbc structure is not properly released. This vulnerability can lead to a denial of service (DoS) due to resource exhaustion.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Lin
Debian
CVE-2022-50809: linux - In the Linux kernel, the following vulnerability has been resolved: xhci: dbc: ...
vendor_debian·2022
CVE-2022-50809 CVE-2022-50809: linux - In the Linux kernel, the following vulnerability has been resolved: xhci: dbc: ...
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.
Scope: local
bookworm: resolved (fixed in 6.0.3-1)
bullseye: resolved
forky: resolved (fixed in 6.0.3-1)
sid: resolved (fixed in 6.0.3-1)
trixie: resolved (fixed in 6.0.3-1)
OSV
CVE-2022-50809: 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
osv·2025-12-30
CVE-2022-50809 CVE-2022-50809: 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
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.
GHSA
GHSA-6ph6-qmh9-c936: 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 th
ghsa_unreviewed·2025-12-30
CVE-2022-50809 GHSA-6ph6-qmh9-c936: 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 th
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.
OSV
xhci: dbc: Fix memory leak in xhci_alloc_dbc()
osv·2025-12-30
CVE-2022-50809 xhci: dbc: Fix memory leak in xhci_alloc_dbc()
xhci: dbc: Fix memory leak in xhci_alloc_dbc()
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.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2022-50809 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz
CVE-2022-50809 CVE-2022-50809 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2022-50809 :
Linux Kernel vulnerability analysis and mitigation
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 : NVD
Published December 30, 2025
CNA Score N/A
Affected Technologies
Linux Kernel
Linux Debian
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 7.4
Exploitation Probability (EPSS) N/A
Affected packages and libraries
kernel-rt-core
kernel-rt-debug-modules-extra
Sources
NVD
Debian 12, 13, 14 Has Fix Added at: Dec 31, 2025
Echo Has Fix Added at: Dec 31,
Bugzilla
CVE-2022-50809 kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
bugzilla·2025-12-30
CVE-2022-50809 [LOW] CVE-2022-50809 kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
CVE-2022-50809 kernel: Linux kernel xHCI DbC: Denial of Service via memory leak
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.
Discussion:
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123012-CVE-2022-50809-e4a0@gregkh/T
2025-12-30
Published