CVE-2025-21775 (GCVE-0-2025-21775)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:18 – Updated: 2026-05-11 21:06
VLAI
Title
can: ctucanfd: handle skb allocation failure
Summary
In the Linux kernel, the following vulnerability has been resolved: can: ctucanfd: handle skb allocation failure If skb allocation fails, the pointer to struct can_frame is NULL. This is actually handled everywhere inside ctucan_err_interrupt() except for the only place. Add the missed NULL check. Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7 , < 84b9ac59978a6a4e0812d1c938fad97306272cef (git)
Affected: 2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7 , < e505b83b9ee6aa0ae2f4395f573a66579ae403fb (git)
Affected: 2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7 , < b0e592dd46a0a952b41c3bf6c963afdd6a42b526 (git)
Affected: 2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7 , < e7e2e2318b1f085044126ba553a4e619842fc36d (git)
Affected: 2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7 , < 9bd24927e3eeb85642c7baa3b28be8bea6c2a078 (git)
Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.129 , ≤ 6.1.* (semver)
Unaffected: 6.6.79 , ≤ 6.6.* (semver)
Unaffected: 6.12.16 , ≤ 6.12.* (semver)
Unaffected: 6.13.4 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:37:28.523Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21775\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:30:28.979689Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:56:09.092Z\"}}], \"cna\": {\"title\": \"can: ctucanfd: handle skb allocation failure\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7\", \"lessThan\": \"84b9ac59978a6a4e0812d1c938fad97306272cef\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7\", \"lessThan\": \"e505b83b9ee6aa0ae2f4395f573a66579ae403fb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7\", \"lessThan\": \"b0e592dd46a0a952b41c3bf6c963afdd6a42b526\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7\", \"lessThan\": \"e7e2e2318b1f085044126ba553a4e619842fc36d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2dcb8e8782d8e4c38903bf37b1a24d3ffd193da7\", \"lessThan\": \"9bd24927e3eeb85642c7baa3b28be8bea6c2a078\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/can/ctucanfd/ctucanfd_base.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.129\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.79\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/can/ctucanfd/ctucanfd_base.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/84b9ac59978a6a4e0812d1c938fad97306272cef\"}, {\"url\": \"https://git.kernel.org/stable/c/e505b83b9ee6aa0ae2f4395f573a66579ae403fb\"}, {\"url\": \"https://git.kernel.org/stable/c/b0e592dd46a0a952b41c3bf6c963afdd6a42b526\"}, {\"url\": \"https://git.kernel.org/stable/c/e7e2e2318b1f085044126ba553a4e619842fc36d\"}, {\"url\": \"https://git.kernel.org/stable/c/9bd24927e3eeb85642c7baa3b28be8bea6c2a078\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: ctucanfd: handle skb allocation failure\\n\\nIf skb allocation fails, the pointer to struct can_frame is NULL. This\\nis actually handled everywhere inside ctucan_err_interrupt() except for\\nthe only place.\\n\\nAdd the missed NULL check.\\n\\nFound by Linux Verification Center (linuxtesting.org) with SVACE static\\nanalysis tool.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.129\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.79\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.16\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.4\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"5.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:06:11.286Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21775\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T21:06:11.286Z\", \"dateReserved\": \"2024-12-29T08:45:45.763Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-27T02:18:21.019Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





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.