CVE-2022-50317 (GCVE-0-2022-50317)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:48 – Updated: 2025-09-15 14:48
VLAI?
Title
drm/bridge: megachips: Fix a null pointer dereference bug
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7649972d97fb98578fbc4a351416cf72895e7c4d , < aaa512ad1e59f2edf8a9e4f2b167a44b24670679 (git)
Affected: 16e3827904932eccfba0915f0c93b519de3536ac , < 5bc20bafcd87ba0858ab772cefc7047cb51bc249 (git)
Affected: 50ad94f8654a53ec9ca3604a7a23cbaf166e0119 , < 1daf69228e310938177119c4eadcd30fc75c81e0 (git)
Affected: b8d10f601f226f055df8b5368d7ea7f369136cd5 , < 877e92e9b1bdeb580b31a46061005936be902cd4 (git)
Affected: 405856460d3e7aefb7c1aef047ec88fc4ef2e2a5 , < 4610e7a4111fa3f3ce27c09d6d94008c55f1cd31 (git)
Affected: 11632d4aa2b3f126790e81a4415d6c23103cf8bb , < 21764467ab396d9f08921e0a5ffa1214244e1ad9 (git)
Affected: 11632d4aa2b3f126790e81a4415d6c23103cf8bb , < 7371fad5cfe6eada6bb5523c895fd6074b15c2b9 (git)
Affected: 11632d4aa2b3f126790e81a4415d6c23103cf8bb , < 1ff673333d46d2c1b053ebd0c1c7c7c79e36943e (git)
Affected: e449461989f0674f188d30494ffd3f5ba74c1a05 (git)
Create a notification for this product.
    Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aaa512ad1e59f2edf8a9e4f2b167a44b24670679",
              "status": "affected",
              "version": "7649972d97fb98578fbc4a351416cf72895e7c4d",
              "versionType": "git"
            },
            {
              "lessThan": "5bc20bafcd87ba0858ab772cefc7047cb51bc249",
              "status": "affected",
              "version": "16e3827904932eccfba0915f0c93b519de3536ac",
              "versionType": "git"
            },
            {
              "lessThan": "1daf69228e310938177119c4eadcd30fc75c81e0",
              "status": "affected",
              "version": "50ad94f8654a53ec9ca3604a7a23cbaf166e0119",
              "versionType": "git"
            },
            {
              "lessThan": "877e92e9b1bdeb580b31a46061005936be902cd4",
              "status": "affected",
              "version": "b8d10f601f226f055df8b5368d7ea7f369136cd5",
              "versionType": "git"
            },
            {
              "lessThan": "4610e7a4111fa3f3ce27c09d6d94008c55f1cd31",
              "status": "affected",
              "version": "405856460d3e7aefb7c1aef047ec88fc4ef2e2a5",
              "versionType": "git"
            },
            {
              "lessThan": "21764467ab396d9f08921e0a5ffa1214244e1ad9",
              "status": "affected",
              "version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
              "versionType": "git"
            },
            {
              "lessThan": "7371fad5cfe6eada6bb5523c895fd6074b15c2b9",
              "status": "affected",
              "version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
              "versionType": "git"
            },
            {
              "lessThan": "1ff673333d46d2c1b053ebd0c1c7c7c79e36943e",
              "status": "affected",
              "version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e449461989f0674f188d30494ffd3f5ba74c1a05",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.296",
                  "versionStartIncluding": "4.14.263",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.262",
                  "versionStartIncluding": "4.19.226",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.220",
                  "versionStartIncluding": "5.4.174",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "versionStartIncluding": "5.10.94",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
                  "versionStartIncluding": "5.15.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.16.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: megachips: Fix a null pointer dereference bug\n\nWhen removing the module we will get the following warning:\n\n[   31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered\n[   31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI\n[   31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\n[   31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130\n[   31.921825] Call Trace:\n[   31.922533]  stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw]\n[   31.923139]  i2c_device_remove+0x181/0x1f0\n\nThe two bridges (stdp2690, stdp4028) do not probe at the same time, so\nthe driver does not call ge_b850v3_resgiter() when probing, causing the\ndriver to try to remove the object that has not been initialized.\n\nFix this by checking whether both the bridges are probed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:48:50.167Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/aaa512ad1e59f2edf8a9e4f2b167a44b24670679"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bc20bafcd87ba0858ab772cefc7047cb51bc249"
        },
        {
          "url": "https://git.kernel.org/stable/c/1daf69228e310938177119c4eadcd30fc75c81e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/877e92e9b1bdeb580b31a46061005936be902cd4"
        },
        {
          "url": "https://git.kernel.org/stable/c/4610e7a4111fa3f3ce27c09d6d94008c55f1cd31"
        },
        {
          "url": "https://git.kernel.org/stable/c/21764467ab396d9f08921e0a5ffa1214244e1ad9"
        },
        {
          "url": "https://git.kernel.org/stable/c/7371fad5cfe6eada6bb5523c895fd6074b15c2b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ff673333d46d2c1b053ebd0c1c7c7c79e36943e"
        }
      ],
      "title": "drm/bridge: megachips: Fix a null pointer dereference bug",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50317",
    "datePublished": "2025-09-15T14:48:50.167Z",
    "dateReserved": "2025-09-15T14:18:36.814Z",
    "dateUpdated": "2025-09-15T14:48:50.167Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.