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https://github.com/fkie-cad/nvd-json-data-feeds.git
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103 lines
4.9 KiB
JSON
103 lines
4.9 KiB
JSON
{
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"id": "CVE-2021-46945",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-02-27T19:04:06.190",
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"lastModified": "2024-04-10T20:11:52.607",
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"vulnStatus": "Analyzed",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"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."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: siempre entra en p\u00e1nico cuando se especifica errores=panic Antes del commit 014c9caa29d3 (\"ext4: make ext4_abort() use __ext4_error()\"), la siguiente serie de comandos desencadenar\u00eda un p\u00e1nico: 1. mount /dev/sda -o ro,errors=panic test 2. mount /dev/sda -o remount,abort test Despu\u00e9s de el commit 014c9caa29d3, volver a montar un sistema de archivos utilizando la opci\u00f3n de montaje de prueba \"abort\" ya no provocar\u00e1 p\u00e1nico . Esta confirmaci\u00f3n restaurar\u00e1 el comportamiento inmediatamente anterior a el commit 014c9caa29d3. (Sin embargo, tenga en cuenta que el comportamiento del kernel de Linux no ha sido consistente; algunas versiones anteriores del kernel, incluidas 5.4 y 4.19, tampoco entraron en p\u00e1nico despu\u00e9s de usar la opci\u00f3n de montaje \"abortar\".) Esto tambi\u00e9n supone un cambio en el comportamiento de larga data; es decir, los siguientes comandos de la serie ahora causar\u00e1n p\u00e1nico, cuando antes no lo hac\u00edan: 1. mount /dev/sda -o ro,errors=panic test 2. echo test > /sys/fs/ext4/sda/trigger_fs_error Sin embargo, Esto hace que el comportamiento de ext4 sea mucho m\u00e1s consistente, por lo que es algo bueno."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 3.6
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "NVD-CWE-noinfo"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.11.0",
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"versionEndExcluding": "5.11.20",
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"matchCriteriaId": "EFB425F0-C28C-4B44-8B4C-AD512AA832DE"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.12.0",
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"versionEndExcluding": "5.12.3",
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"matchCriteriaId": "C3814FA3-8141-4313-A852-8C4212BE12AD"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1e9ea8f4637026b8e965128953f2da061ccae9c4",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"tags": [
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"Patch"
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]
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},
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{
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"url": "https://git.kernel.org/stable/c/64e1eebe2131183174f4fbb6b1491355f96c6cde",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"tags": [
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"Patch"
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]
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},
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{
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"url": "https://git.kernel.org/stable/c/ac2f7ca51b0929461ea49918f27c11b680f28995",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"tags": [
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"Patch"
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]
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}
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]
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} |