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CVE-2021-4460 (GCVE-0-2021-4460)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:45 – Updated: 2026-08-11 02:05
VLAI
Title
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix UBSAN shift-out-of-bounds warning If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up doing a shift operation where the number of bits shifted equals number of bits in the operand. This behaviour is undefined. Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the count is >= number of bits in the operand. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 17:39 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 0c0356ef2498c1a250fe3846f30293f828737309 (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 1874b0ef1426b873de94c61861e38f29a8df714c (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 3fdc5182700910a685d23df57d65166e8556a266 (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 9069b1b542de8f3bbffef868aff41521b21485cf (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 50e2fc36e72d4ad672032ebf646cecb48656efe0 (git)
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Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.4.118 , ≤ 5.4.* (semver)
Unaffected: 5.10.36 , ≤ 5.10.* (semver)
Unaffected: 5.11.20 , ≤ 5.11.* (semver)
Unaffected: 5.12.3 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.1, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-4460\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T17:39:30.831800Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T17:39:26.550Z\"}}], \"cna\": {\"title\": \"drm/amdkfd: Fix UBSAN shift-out-of-bounds warning\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"0c0356ef2498c1a250fe3846f30293f828737309\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"1874b0ef1426b873de94c61861e38f29a8df714c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"3fdc5182700910a685d23df57d65166e8556a266\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"9069b1b542de8f3bbffef868aff41521b21485cf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"50e2fc36e72d4ad672032ebf646cecb48656efe0\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.118\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.11.20\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.11.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309\"}, {\"url\": \"https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c\"}, {\"url\": \"https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266\"}, {\"url\": \"https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf\"}, {\"url\": \"https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\\n\\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\\ndoing a shift operation where the number of bits shifted equals\\nnumber of bits in the operand. This behaviour is undefined.\\n\\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\\ncount is \u003e= number of bits in the operand.\\n\\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.118\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.36\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.20\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.3\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"3.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-20T08:50:43.244Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-4460\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T17:42:45.892Z\", \"dateReserved\": \"2025-10-01T11:38:13.842Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-10-01T11:45:19.050Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
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}