CVE-2024-26993 (GCVE-0-2024-26993)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:28 – Updated: 2025-11-04 17:15
VLAI?
Title
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
Summary
In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released. Fix the leak by adding an explicit kobject_put() call when kn is NULL.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < f28bba37fe244889b81bb5c508d3f6e5c6e342c5 (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 57baab0f376bec8f54b0fe6beb8f77a57c228063 (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17 (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 43f00210cb257bcb0387e8caeb4b46375d67f30c (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 5d43e072285e81b0b63cee7189b3357c7768a43b (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < ac107356aabc362aaeb77463e814fc067a5d3957 (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < a4c99b57d43bab45225ba92d574a8683f9edc8e4 (git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < a90bca2228c0646fc29a72689d308e5fe03e6d78 (git)
Affected: e8a37b2fd5b5087bec6cbbf6946ee3caa712953b (git)
Affected: a6abc93760dd07fcd29760b70e6e7520f22cb288 (git)
Affected: 461a6385e58e8247e6ba2005aa5d1b8d980ee4a2 (git)
Affected: 8a5e02a0f46ea33ed19e48e096a8e8d28e73d10a (git)
Affected: c984f4d1d40a2f349503b3faf946502ccbf02f9f (git)
Affected: 807d1d299a04e9ad9a9dac55419c1137a105254b (git)
Create a notification for this product.
    Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 4.19.313 , ≤ 4.19.* (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.157 , ≤ 5.15.* (semver)
Unaffected: 6.1.88 , ≤ 6.1.* (semver)
Unaffected: 6.6.29 , ≤ 6.6.* (semver)
Unaffected: 6.8.8 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website

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\"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.313\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.275\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.216\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.157\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.88\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.29\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/sysfs/file.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5\"}, {\"url\": \"https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063\"}, {\"url\": \"https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17\"}, {\"url\": \"https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c\"}, {\"url\": \"https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b\"}, {\"url\": \"https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957\"}, {\"url\": \"https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4\"}, {\"url\": \"https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfs: sysfs: Fix reference leak in sysfs_break_active_protection()\\n\\nThe sysfs_break_active_protection() routine has an obvious reference\\nleak in its error path.  If the call to kernfs_find_and_get() fails then\\nkn will be NULL, so the companion sysfs_unbreak_active_protection()\\nroutine won\u0027t get called (and would only cause an access violation by\\ntrying to dereference kn-\u003eparent if it was called).  As a result, the\\nreference to kobj acquired at the start of the function will never be\\nreleased.\\n\\nFix the leak by adding an explicit kobject_put() call when kn is NULL.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.313\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.157\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.88\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.29\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.16.62\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.18.121\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.4.154\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.9.125\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.68\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.18.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:01:41.829Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26993\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:01:41.829Z\", \"dateReserved\": \"2024-02-19T14:20:24.206Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:28:02.462Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.


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