gsd-2021-47088
Vulnerability from gsd
Modified
2024-03-01 06:04
Details
In the Linux kernel, the following vulnerability has been resolved: mm/damon/dbgfs: protect targets destructions with kdamond_lock DAMON debugfs interface iterates current monitoring targets in 'dbgfs_target_ids_read()' while holding the corresponding 'kdamond_lock'. However, it also destructs the monitoring targets in 'dbgfs_before_terminate()' without holding the lock. This can result in a use_after_free bug. This commit avoids the race by protecting the destruction with the corresponding 'kdamond_lock'.
Aliases



{
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-47088",
         ],
         details: "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\n\nDAMON debugfs interface iterates current monitoring targets in\n'dbgfs_target_ids_read()' while holding the corresponding\n'kdamond_lock'.  However, it also destructs the monitoring targets in\n'dbgfs_before_terminate()' without holding the lock.  This can result in\na use_after_free bug.  This commit avoids the race by protecting the\ndestruction with the corresponding 'kdamond_lock'.",
         id: "GSD-2021-47088",
         modified: "2024-03-01T06:04:48.325923Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@kernel.org",
            ID: "CVE-2021-47088",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "Linux",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<",
                                       version_name: "4bc05954d007",
                                       version_value: "330c6117a82c",
                                    },
                                    {
                                       version_value: "not down converted",
                                       x_cve_json_5_version_data: {
                                          defaultStatus: "affected",
                                          versions: [
                                             {
                                                status: "affected",
                                                version: "5.15",
                                             },
                                             {
                                                lessThan: "5.15",
                                                status: "unaffected",
                                                version: "0",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "5.15.*",
                                                status: "unaffected",
                                                version: "5.15.12",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "*",
                                                status: "unaffected",
                                                version: "5.16",
                                                versionType: "original_commit_for_fix",
                                             },
                                          ],
                                       },
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "Linux",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\n\nDAMON debugfs interface iterates current monitoring targets in\n'dbgfs_target_ids_read()' while holding the corresponding\n'kdamond_lock'.  However, it also destructs the monitoring targets in\n'dbgfs_before_terminate()' without holding the lock.  This can result in\na use_after_free bug.  This commit avoids the race by protecting the\ndestruction with the corresponding 'kdamond_lock'.",
               },
            ],
         },
         generator: {
            engine: "bippy-4986f5686161",
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c",
               },
               {
                  name: "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         cve: {
            descriptions: [
               {
                  lang: "en",
                  value: "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\n\nDAMON debugfs interface iterates current monitoring targets in\n'dbgfs_target_ids_read()' while holding the corresponding\n'kdamond_lock'.  However, it also destructs the monitoring targets in\n'dbgfs_before_terminate()' without holding the lock.  This can result in\na use_after_free bug.  This commit avoids the race by protecting the\ndestruction with the corresponding 'kdamond_lock'.",
               },
            ],
            id: "CVE-2021-47088",
            lastModified: "2024-03-05T13:41:01.900",
            metrics: {},
            published: "2024-03-04T18:15:07.510",
            references: [
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733",
               },
            ],
            sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            vulnStatus: "Awaiting Analysis",
         },
      },
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.