CVE-2022-50499: media: dvb-core: Fix double free in dvb_register_device()
Vulnerability summary
CVE-2022-50499 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.9% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 04-10-2025PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.16% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu119 products
- linux< 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 9db28659aa893c68f162b11fd63bb7f6a713e52f, < 0588b12c418c3e4f927ced11f27b02ef4a5bfb07 | ≥ 1399a136127bfe1b9bb7c951d9851da62a519121, < e9a78485b658361fab6a5547377be6c1af6f1b3d | ≥ 4df2427a5148093987437054bb82da4d014dcd59, < 70bc51303871159796b55ba1a8f16637b46c2511 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < b21f62b49ee9c3e0216d685d9cfd6003e5727271 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < 7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < acf984a3718c2458eb9e08b6714490a04f213c58 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < 772892b29ac50c2c5e918fc80104aa6ede81d837 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < 123eddf92a114e03919942641d2c2b1f4ca56ea6 | ≥ fcd5ce4b3936242e6679875a4d3c3acfc8743e15, < 6b0d0477fce747d4137aa65856318b55fba72198 | 8c17f6f5d0d6aab72a2af25c9911ac66e984be06 | 202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c | ≥ 4.9.195, < 4.9.337 | ≥ 4.14.147, < 4.14.303 | ≥ 4.19.77, < 4.19.270 | ≥ 5.2.19, < 5.3 | ≥ 5.3.4, < 5.4 | 5.4
- linux_kernel≥ 4.9.195, < 4.9.337 | ≥ 4.14.147, < 4.14.303 | ≥ 4.19.77, < 4.19.270 | ≥ 5.2.19, < 5.3 | ≥ 5.3.4, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.87 | ≥ 5.16, < 6.0.18 | ≥ 6.1, < 6.1.4
Debian1 product
- linux< 6.1.4-1
3 vendors · 122 products
