CVE-2025-21726 (GCVE-0-2025-21726)
Vulnerability from cvelistv5
Published
2025-02-27 02:07
Modified
2025-05-04 13:06
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: padata: avoid UAF for reorder_work Although the previous patch can avoid ps and ps UAF for _do_serial, it can not avoid potential UAF issue for reorder_work. This issue can happen just as below: crypto_request crypto_request crypto_del_alg padata_do_serial ... padata_reorder // processes all remaining // requests then breaks while (1) { if (!padata) break; ... } padata_do_serial // new request added list_add // sees the new request queue_work(reorder_work) padata_reorder queue_work_on(squeue->work) ... <kworker context> padata_serial_worker // completes new request, // no more outstanding // requests crypto_del_alg // free pd <kworker context> invoke_padata_reorder // UAF of pd To avoid UAF for 'reorder_work', get 'pd' ref before put 'reorder_work' into the 'serial_wq' and put 'pd' ref until the 'serial_wq' finish.
References
Impacted products
Vendor Product Version
Linux Linux Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: bbefa1dd6a6d53537c11624752219e39959d04fb
Version: b4c8ed0bf977760a206997b6429a7ac91978f440
Version: e43d65719527043f1ef79ecba9d4ede58cbc7ffe
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This issue can\\nhappen just as below:\\n\\ncrypto_request\\t\\t\\tcrypto_request\\t\\tcrypto_del_alg\\npadata_do_serial\\n  ...\\n  padata_reorder\\n    // processes all remaining\\n    // requests then breaks\\n    while (1) {\\n      if (!padata)\\n        break;\\n      ...\\n    }\\n\\n\\t\\t\\t\\tpadata_do_serial\\n\\t\\t\\t\\t  // new request added\\n\\t\\t\\t\\t  list_add\\n    // sees the new request\\n    queue_work(reorder_work)\\n\\t\\t\\t\\t  padata_reorder\\n\\t\\t\\t\\t    queue_work_on(squeue-\u003ework)\\n...\\n\\n\\t\\t\\t\\t\u003ckworker context\u003e\\n\\t\\t\\t\\tpadata_serial_worker\\n\\t\\t\\t\\t// completes new request,\\n\\t\\t\\t\\t// no more outstanding\\n\\t\\t\\t\\t// requests\\n\\n\\t\\t\\t\\t\\t\\t\\tcrypto_del_alg\\n\\t\\t\\t\\t\\t\\t\\t  // free pd\\n\\n\u003ckworker context\u003e\\ninvoke_padata_reorder\\n  // UAF of pd\\n\\nTo avoid UAF for \u0027reorder_work\u0027, get \u0027pd\u0027 ref before put \u0027reorder_work\u0027\\ninto the \u0027serial_wq\u0027 and put \u0027pd\u0027 ref until the \u0027serial_wq\u0027 finish.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: padata: avoid UAF for reorder_work Although the previous patch can avoid ps and ps UAF for _do_serial, it can not avoid potential UAF issue for reorder_work. This issue can happen just as below: crypto_request crypto_request crypto_del_alg padata_do_serial ... padata_reorder // processes all remaining // requests then breaks while (1) { if (!padata) break; ... } padata_do_serial // new request added list_add // sees the new request queue_work(reorder_work) padata_reorder queue_work_on(squeue-\u0026gt;work) ...  padata_serial_worker // completes new request, // no more outstanding // requests crypto_del_alg // free pd  invoke_padata_reorder // UAF of pd To avoid UAF for \u0027reorder_work\u0027, get \u0027pd\u0027 ref before put \u0027reorder_work\u0027 into the \u0027serial_wq\u0027 and put \u0027pd\u0027 ref until the \u0027serial_wq\u0027 finish. \"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.19\",\"versionEndExcluding\":\"5.5\",\"matchCriteriaId\":\"F8D27E1D-B88C-4DA9-AA0B-5EE142C053FB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5.3\",\"versionEndExcluding\":\"5.10.235\",\"matchCriteriaId\":\"788E7D29-360A-41BA-8805-31648EE009B3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.79\",\"matchCriteriaId\":\"39DC45D8-E30E-4F4A-9332-393B7BCF6900\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.129\",\"matchCriteriaId\":\"2DA5009C-C9B9-4A1D-9B96-78427E8F232C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.76\",\"matchCriteriaId\":\"A6D70701-9CB6-4222-A957-00A419878993\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.13\",\"matchCriteriaId\":\"2897389C-A8C3-4D69-90F2-E701B3D66373\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.2\",\"matchCriteriaId\":\"6D4116B1-1BFD-4F23-BA84-169CC05FC5A3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6f45ef616775b0ce7889b0f6077fc8d681ab30bc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7000507bb0d2ceb545c0a690e0c707c897d102c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a54091c24220a4cd847d5b4f36d678edacddbaf0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dd7d37ccf6b11f3d95e797ebe4e9e886d0332600\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21726\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T17:58:10.478288Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T17:58:11.777Z\"}}], \"cna\": {\"title\": \"padata: avoid UAF for reorder_work\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"7000507bb0d2ceb545c0a690e0c707c897d102c2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"6f45ef616775b0ce7889b0f6077fc8d681ab30bc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"a54091c24220a4cd847d5b4f36d678edacddbaf0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbefa1dd6a6d53537c11624752219e39959d04fb\", \"lessThan\": \"dd7d37ccf6b11f3d95e797ebe4e9e886d0332600\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/padata.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.235\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.179\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.129\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/padata.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0\"}, {\"url\": \"https://git.kernel.org/stable/c/4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1\"}, {\"url\": \"https://git.kernel.org/stable/c/7000507bb0d2ceb545c0a690e0c707c897d102c2\"}, {\"url\": \"https://git.kernel.org/stable/c/6f45ef616775b0ce7889b0f6077fc8d681ab30bc\"}, {\"url\": \"https://git.kernel.org/stable/c/8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac\"}, {\"url\": \"https://git.kernel.org/stable/c/a54091c24220a4cd847d5b4f36d678edacddbaf0\"}, {\"url\": \"https://git.kernel.org/stable/c/dd7d37ccf6b11f3d95e797ebe4e9e886d0332600\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npadata: avoid UAF for reorder_work\\n\\nAlthough the previous patch can avoid ps and ps UAF for _do_serial, it\\ncan not avoid potential UAF issue for reorder_work. This issue can\\nhappen just as below:\\n\\ncrypto_request\\t\\t\\tcrypto_request\\t\\tcrypto_del_alg\\npadata_do_serial\\n  ...\\n  padata_reorder\\n    // processes all remaining\\n    // requests then breaks\\n    while (1) {\\n      if (!padata)\\n        break;\\n      ...\\n    }\\n\\n\\t\\t\\t\\tpadata_do_serial\\n\\t\\t\\t\\t  // new request added\\n\\t\\t\\t\\t  list_add\\n    // sees the new request\\n    queue_work(reorder_work)\\n\\t\\t\\t\\t  padata_reorder\\n\\t\\t\\t\\t    queue_work_on(squeue-\u003ework)\\n...\\n\\n\\t\\t\\t\\t\u003ckworker context\u003e\\n\\t\\t\\t\\tpadata_serial_worker\\n\\t\\t\\t\\t// completes new request,\\n\\t\\t\\t\\t// no more outstanding\\n\\t\\t\\t\\t// requests\\n\\n\\t\\t\\t\\t\\t\\t\\tcrypto_del_alg\\n\\t\\t\\t\\t\\t\\t\\t  // free pd\\n\\n\u003ckworker context\u003e\\ninvoke_padata_reorder\\n  // UAF of pd\\n\\nTo avoid UAF for \u0027reorder_work\u0027, get \u0027pd\u0027 ref before put \u0027reorder_work\u0027\\ninto the \u0027serial_wq\u0027 and put \u0027pd\u0027 ref until the \u0027serial_wq\u0027 finish.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-03-24T15:39:24.654Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21726\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-24T15:39:24.654Z\", \"dateReserved\": \"2024-12-29T08:45:45.754Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-27T02:07:32.861Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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