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CVE-2022-50499 (GCVE-0-2022-50499)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2026-05-23 15:24
VLAI
Title
media: dvb-core: Fix double free in dvb_register_device()
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9db28659aa893c68f162b11fd63bb7f6a713e52f , < 0588b12c418c3e4f927ced11f27b02ef4a5bfb07 (git)
Affected: 1399a136127bfe1b9bb7c951d9851da62a519121 , < e9a78485b658361fab6a5547377be6c1af6f1b3d (git)
Affected: 4df2427a5148093987437054bb82da4d014dcd59 , < 70bc51303871159796b55ba1a8f16637b46c2511 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < b21f62b49ee9c3e0216d685d9cfd6003e5727271 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < acf984a3718c2458eb9e08b6714490a04f213c58 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 772892b29ac50c2c5e918fc80104aa6ede81d837 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 123eddf92a114e03919942641d2c2b1f4ca56ea6 (git)
Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 6b0d0477fce747d4137aa65856318b55fba72198 (git)
Affected: 8c17f6f5d0d6aab72a2af25c9911ac66e984be06 (git)
Affected: 202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c (git)
Affected: 4.9.195 , < 4.9.337 (semver)
Affected: 4.14.147 , < 4.14.303 (semver)
Affected: 4.19.77 , < 4.19.270 (semver)
Affected: 5.2.19 , < 5.3 (semver)
Affected: 5.3.4 , < 5.4 (semver)
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Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.18 , ≤ 6.0.* (semver)
Unaffected: 6.1.4 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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This may also cause an Use After free in\\nmedia_device_unregister_entity().\\n\\nFix this by storing NULL to dvb-\u003eentity when it is freed.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/dvb-core/dvbdev.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9db28659aa893c68f162b11fd63bb7f6a713e52f\",\"lessThan\":\"0588b12c418c3e4f927ced11f27b02ef4a5bfb07\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1399a136127bfe1b9bb7c951d9851da62a519121\",\"lessThan\":\"e9a78485b658361fab6a5547377be6c1af6f1b3d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4df2427a5148093987437054bb82da4d014dcd59\",\"lessThan\":\"70bc51303871159796b55ba1a8f16637b46c2511\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"b21f62b49ee9c3e0216d685d9cfd6003e5727271\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"acf984a3718c2458eb9e08b6714490a04f213c58\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"772892b29ac50c2c5e918fc80104aa6ede81d837\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"123eddf92a114e03919942641d2c2b1f4ca56ea6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcd5ce4b3936242e6679875a4d3c3acfc8743e15\",\"lessThan\":\"6b0d0477fce747d4137aa65856318b55fba72198\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8c17f6f5d0d6aab72a2af25c9911ac66e984be06\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.9.195\",\"lessThan\":\"4.9.337\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.14.147\",\"lessThan\":\"4.14.303\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.77\",\"lessThan\":\"4.19.270\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.2.19\",\"lessThan\":\"5.3\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.3.4\",\"lessThan\":\"5.4\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/dvb-core/dvbdev.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.337\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.303\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.270\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.229\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.163\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.87\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.18\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.4\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.195\",\"versionEndExcluding\":\"4.9.337\",\"matchCriteriaId\":\"A9B84AB7-4AC3-4105-B7B4-C7179BF6FEA8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.147\",\"versionEndExcluding\":\"4.14.303\",\"matchCriteriaId\":\"55F1C74B-508B-40EF-AA92-BDBB8B358084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.77\",\"versionEndExcluding\":\"4.19.270\",\"matchCriteriaId\":\"070E4E28-82B9-413D-9C76-A5AF17B49161\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.2.19\",\"versionEndExcluding\":\"5.3\",\"matchCriteriaId\":\"48875F15-B129-4684-8556-4EAD32A9586F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.3.4\",\"versionEndExcluding\":\"5.4.229\",\"matchCriteriaId\":\"A075CE1B-9AD1-4DE5-8D34-58F33ED44819\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.163\",\"matchCriteriaId\":\"D05D31FC-BD74-4F9E-B1D8-9CED62BE6F65\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.87\",\"matchCriteriaId\":\"7B9E5B1C-CD46-4790-9500-615863850401\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.18\",\"matchCriteriaId\":\"08D38C5F-9644-4549-BBA6-F0860F024D14\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.4\",\"matchCriteriaId\":\"BC4189D9-5478-4E88-A78D-9C1DE29B217C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:38:15+00:00",
      "cve": "CVE-2022-50499",
      "id": "CVE-2022-50499",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: dvb-core: Fix double free in dvb_register_device()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50499.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-11T16:50:40Z",
      "cve": "CVE-2022-50499",
      "id": "CVE-2022-50499",
      "initial_release_date": "2025-10-05T02:57:38Z",
      "product_status:known_affected": "354",
      "product_status:known_not_affected": "391",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50499",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50499.json",
      "version": "34"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.