CVE-2022-50274
media: dvbdev: adopts refcnt to avoid UAF
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free.
That is, the cleanup from dvb_unregister_device() releases the dvb_device
even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its
deallocation until no pointer refers to the object.
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-09-15 CVE Reserved
- 2025-09-15 CVE Published
- 2025-12-23 CVE Updated
- 2026-01-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-50274 | 2024-05-22 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2395314 | 2024-05-22 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 4.14.303 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 4.14.303" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 4.19.270 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 4.19.270" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.4.229 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.4.229" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.10.163 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.10.163" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 5.15.86 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 5.15.86" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.0.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.0.16" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.1.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.1.2" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.2" | en |
Affected
| ||||||