{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-46945", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-25T13:45:52.721Z", "datePublished": "2024-02-27T18:40:31.095Z", "dateUpdated": "2026-05-11T13:44:56.826Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:44:56.826Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: always panic when errors=panic is specified\n\nBefore commit 014c9caa29d3 (\"ext4: make ext4_abort() use\n__ext4_error()\"), the following series of commands would trigger a\npanic:\n\n1. mount /dev/sda -o ro,errors=panic test\n2. mount /dev/sda -o remount,abort test\n\nAfter commit 014c9caa29d3, remounting a file system using the test\nmount option \"abort\" will no longer trigger a panic. This commit will\nrestore the behaviour immediately before commit 014c9caa29d3.\n(However, note that the Linux kernel's behavior has not been\nconsistent; some previous kernel versions, including 5.4 and 4.19\nsimilarly did not panic after using the mount option \"abort\".)\n\nThis also makes a change to long-standing behaviour; namely, the\nfollowing series commands will now cause a panic, when previously it\ndid not:\n\n1. mount /dev/sda -o ro,errors=panic test\n2. echo test > /sys/fs/ext4/sda/trigger_fs_error\n\nHowever, this makes ext4's behaviour much more consistent, so this is\na good thing." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/super.c" ], "versions": [ { "version": "014c9caa29d3a44e0de695c99ef18bec3e887d52", "lessThan": "64e1eebe2131183174f4fbb6b1491355f96c6cde", "status": "affected", "versionType": "git" }, { "version": "014c9caa29d3a44e0de695c99ef18bec3e887d52", "lessThan": "1e9ea8f4637026b8e965128953f2da061ccae9c4", "status": "affected", "versionType": "git" }, { "version": "014c9caa29d3a44e0de695c99ef18bec3e887d52", "lessThan": "ac2f7ca51b0929461ea49918f27c11b680f28995", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/super.c" ], "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.11.20", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.3", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.11.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.12.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/64e1eebe2131183174f4fbb6b1491355f96c6cde" }, { "url": "https://git.kernel.org/stable/c/1e9ea8f4637026b8e965128953f2da061ccae9c4" }, { "url": "https://git.kernel.org/stable/c/ac2f7ca51b0929461ea49918f27c11b680f28995" } ], "title": "ext4: always panic when errors=panic is specified", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-28T17:01:37.364142Z", "id": "CVE-2021-46945", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-28T17:01:44.888Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:17:43.032Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/64e1eebe2131183174f4fbb6b1491355f96c6cde", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/1e9ea8f4637026b8e965128953f2da061ccae9c4", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ac2f7ca51b0929461ea49918f27c11b680f28995", "tags": [ "x_transferred" ] } ] } ] } }