CVE-2022-50499
CVE-2022-50499 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-32330
- Weakness: CWE-415
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2022-50499?
- 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.
- How severe is CVE-2022-50499?
- CVE-2022-50499 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-50499 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-50499?
- CVE-2022-50499 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-50499?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2022-50499 have an EU (EUVD) identifier?
- Yes. CVE-2022-50499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-32330.
- When was CVE-2022-50499 published?
- CVE-2022-50499 was published on 2025-10-04 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07
- https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6
- https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198
- https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511
- https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837
- https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8
- https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58
- https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271
- https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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