CVE-2022-50499 [High] | Use-After-Free in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.03%	0.15%	+0.12%
2	2025-10-05	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.03%

0.15%

+0.12%

2025-10-05

—

0.03%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

OS Trackers for CVE-2022-50499

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50499 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-50499
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2022-50499
`suse`	high	—	https://www.suse.com/security/cve/CVE-2022-50499/
`ubuntu`	medium	CVE-2022-50499 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1414 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1017, ignored 158, released 150, not-affected 88, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50499

Affected software / configurations for CVE-2022-50499

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.9.195, < 4.9.337	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.14.147, < 4.14.303	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.19.77, < 4.19.270	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.2.19, < 5.3	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.3.4, < 5.4.229	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.163	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.87	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.0.18	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.1, < 6.1.4	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-50499

URL	Tags
https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07	Patch
https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6	Patch
https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198	Patch
https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511	Patch
https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837	Patch
https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8	Patch
https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58	Patch
https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271	Patch
https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d	Patch

URL

CVE-2022-50499 | media: dvb-core: Fix double free in dvb_register_device()

Exploit prediction scoring system (EPSS) score for CVE-2022-50499

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50499

Weakness enumeration for CVE-2022-50499

OS Trackers for CVE-2022-50499

Affected software / configurations for CVE-2022-50499

References for CVE-2022-50499