Vulnerability-Lookup

GHSA-G26C-FP96-224V

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-07 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix race where eprobes can be called before the event

The flag that tells the event to call its triggers after reading the event is set for eprobes after the eprobe is enabled. This leads to a race where the eprobe may be triggered at the beginning of the event where the record information is NULL. The eprobe then dereferences the NULL record causing a NULL kernel pointer bug.

Test for a NULL record to keep this from happening.

Severity

4.7 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-49798"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:03Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix race where eprobes can be called before the event\n\nThe flag that tells the event to call its triggers after reading the event\nis set for eprobes after the eprobe is enabled. This leads to a race where\nthe eprobe may be triggered at the beginning of the event where the record\ninformation is NULL. The eprobe then dereferences the NULL record causing\na NULL kernel pointer bug.\n\nTest for a NULL record to keep this from happening.",
  "id": "GHSA-g26c-fp96-224v",
  "modified": "2025-11-07T21:31:18Z",
  "published": "2025-05-01T15:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49798"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7291dec4f2d17a2d3fd1f789fb41e58476539f21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73f5191467ffe3af82f27fe0ea6a8c2fac724d3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49798 (GCVE-0-2022-49798)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-11 19:06

Title

tracing: Fix race where eprobes can be called before the event

Summary

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix race where eprobes can be called before the event The flag that tells the event to call its triggers after reading the event is set for eprobes after the eprobe is enabled. This leads to a race where the eprobe may be triggered at the beginning of the event where the record information is NULL. The eprobe then dereferences the NULL record causing a NULL kernel pointer bug. Test for a NULL record to keep this from happening.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/7291dec4f2d17a2d3…
https://git.kernel.org/stable/c/73f5191467ffe3af8…
https://git.kernel.org/stable/c/94eedf3dded5fb472…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7491e2c442781a1860181adb5ab472a52075f393 , < 7291dec4f2d17a2d3fd1f789fb41e58476539f21 (git) Affected: 7491e2c442781a1860181adb5ab472a52075f393 , < 73f5191467ffe3af82f27fe0ea6a8c2fac724d3f (git) Affected: 7491e2c442781a1860181adb5ab472a52075f393 , < 94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26 (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.80 , ≤ 5.15.* (semver) Unaffected: 6.0.10 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_eprobe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7291dec4f2d17a2d3fd1f789fb41e58476539f21",
              "status": "affected",
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "versionType": "git"
            },
            {
              "lessThan": "73f5191467ffe3af82f27fe0ea6a8c2fac724d3f",
              "status": "affected",
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "versionType": "git"
            },
            {
              "lessThan": "94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26",
              "status": "affected",
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_eprobe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "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": "5.15.80",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.10",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix race where eprobes can be called before the event\n\nThe flag that tells the event to call its triggers after reading the event\nis set for eprobes after the eprobe is enabled. This leads to a race where\nthe eprobe may be triggered at the beginning of the event where the record\ninformation is NULL. The eprobe then dereferences the NULL record causing\na NULL kernel pointer bug.\n\nTest for a NULL record to keep this from happening."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:06:59.524Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7291dec4f2d17a2d3fd1f789fb41e58476539f21"
        },
        {
          "url": "https://git.kernel.org/stable/c/73f5191467ffe3af82f27fe0ea6a8c2fac724d3f"
        },
        {
          "url": "https://git.kernel.org/stable/c/94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26"
        }
      ],
      "title": "tracing: Fix race where eprobes can be called before the event",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49798",
    "datePublished": "2025-05-01T14:09:27.722Z",
    "dateReserved": "2025-05-01T14:05:17.224Z",
    "dateUpdated": "2026-05-11T19:06:59.524Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-G26C-FP96-224V

CVE-2022-49798 (GCVE-0-2022-49798)

Tags

Sightings

Nomenclature