CVE-2024-26587 (GCVE-0-2024-26587)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:13 – Updated: 2026-05-11 20:00
VLAI
Title
net: netdevsim: don't try to destroy PHC on VFs
Summary
In the Linux kernel, the following vulnerability has been resolved: net: netdevsim: don't try to destroy PHC on VFs PHC gets initialized in nsim_init_netdevsim(), which is only called if (nsim_dev_port_is_pf()). Create a counterpart of nsim_init_netdevsim() and move the mock_phc_destroy() there. This fixes a crash trying to destroy netdevsim with VFs instantiated, as caught by running the devlink.sh test: BUG: kernel NULL pointer dereference, address: 00000000000000b8 RIP: 0010:mock_phc_destroy+0xd/0x30 Call Trace: <TASK> nsim_destroy+0x4a/0x70 [netdevsim] __nsim_dev_port_del+0x47/0x70 [netdevsim] nsim_dev_reload_destroy+0x105/0x120 [netdevsim] nsim_drv_remove+0x2f/0xb0 [netdevsim] device_release_driver_internal+0x1a1/0x210 bus_remove_device+0xd5/0x120 device_del+0x159/0x490 device_unregister+0x12/0x30 del_device_store+0x11a/0x1a0 [netdevsim] kernfs_fop_write_iter+0x130/0x1d0 vfs_write+0x30b/0x4b0 ksys_write+0x69/0xf0 do_syscall_64+0xcc/0x1e0 entry_SYSCALL_64_after_hwframe+0x6f/0x77
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b63e78fca889e07931ec8f259701718a24e5052e , < 08aca65997fb6f233066883b1f1e653bcb1f26ca (git)
Affected: b63e78fca889e07931ec8f259701718a24e5052e , < c5068e442eed063d2f1658e6b6d3c1c6fcf1e588 (git)
Affected: b63e78fca889e07931ec8f259701718a24e5052e , < ea937f77208323d35ffe2f8d8fc81b00118bfcda (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:07:19.707Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26587\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-02-26T14:37:54.234702Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:37.677Z\"}}], \"cna\": {\"title\": \"net: netdevsim: don\u0027t try to destroy PHC on VFs\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b63e78fca889e07931ec8f259701718a24e5052e\", \"lessThan\": \"08aca65997fb6f233066883b1f1e653bcb1f26ca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b63e78fca889e07931ec8f259701718a24e5052e\", \"lessThan\": \"c5068e442eed063d2f1658e6b6d3c1c6fcf1e588\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b63e78fca889e07931ec8f259701718a24e5052e\", \"lessThan\": \"ea937f77208323d35ffe2f8d8fc81b00118bfcda\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/netdevsim/netdev.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/netdevsim/netdev.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca\"}, {\"url\": \"https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588\"}, {\"url\": \"https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: netdevsim: don\u0027t try to destroy PHC on VFs\\n\\nPHC gets initialized in nsim_init_netdevsim(), which\\nis only called if (nsim_dev_port_is_pf()).\\n\\nCreate a counterpart of nsim_init_netdevsim() and\\nmove the mock_phc_destroy() there.\\n\\nThis fixes a crash trying to destroy netdevsim with\\nVFs instantiated, as caught by running the devlink.sh test:\\n\\n    BUG: kernel NULL pointer dereference, address: 00000000000000b8\\n    RIP: 0010:mock_phc_destroy+0xd/0x30\\n    Call Trace:\\n     \u003cTASK\u003e\\n     nsim_destroy+0x4a/0x70 [netdevsim]\\n     __nsim_dev_port_del+0x47/0x70 [netdevsim]\\n     nsim_dev_reload_destroy+0x105/0x120 [netdevsim]\\n     nsim_drv_remove+0x2f/0xb0 [netdevsim]\\n     device_release_driver_internal+0x1a1/0x210\\n     bus_remove_device+0xd5/0x120\\n     device_del+0x159/0x490\\n     device_unregister+0x12/0x30\\n     del_device_store+0x11a/0x1a0 [netdevsim]\\n     kernfs_fop_write_iter+0x130/0x1d0\\n     vfs_write+0x30b/0x4b0\\n     ksys_write+0x69/0xf0\\n     do_syscall_64+0xcc/0x1e0\\n     entry_SYSCALL_64_after_hwframe+0x6f/0x77\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:00:13.226Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26587\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:00:13.226Z\", \"dateReserved\": \"2024-02-19T14:20:24.126Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-22T16:13:32.442Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.