CVE-2021-47328
Vulnerability from cvelistv5
Published
2024-05-21 14:35
Modified
2024-12-19 07:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix conn use after free during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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         containers: "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.445Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47328\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-23T19:06:33.421642Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:43.975Z\"}}], \"cna\": {\"title\": \"scsi: iscsi: Fix conn use after free during resets\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"bf20d85a88384574fabb3d53ad62a8af57e7ab11\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"d04958a348e560938410e04a12fb99da9c7e6a00\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"89812e7957ab0746eab66ed6fc49d52bb4dca250\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"f0a031f7c55ffd944fead1ddaf2aa94df9a158c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"fa9542b35ceb4202e8f8d65f440529a63524dca9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"ec29d0ac29be366450a7faffbcf8cba3a6a3b506\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/scsi/libiscsi.c\", \"include/scsi/libiscsi.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"4.19.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.134\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.52\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.13.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/scsi/libiscsi.c\", \"include/scsi/libiscsi.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11\"}, {\"url\": \"https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00\"}, {\"url\": \"https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250\"}, {\"url\": \"https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1\"}, {\"url\": \"https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9\"}, {\"url\": \"https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: iscsi: Fix conn use after free during resets\\n\\nIf we haven't done a unbind target call we can race where\\niscsi_conn_teardown wakes up the EH thread and then frees the conn while\\nthose threads are still accessing the conn ehwait.\\n\\nWe can only do one TMF per session so this just moves the TMF fields from\\nthe conn to the session. We can then rely on the\\niscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call\\nto remove the target and it's devices, and know after that point there is\\nno device or scsi-ml callout trying to access the session.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T07:39:47.968Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2021-47328\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T07:39:47.968Z\", \"dateReserved\": \"2024-05-21T14:28:16.975Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:35:40.479Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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