178 lines
7.8 KiB
JSON
178 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47556",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-24T15:02:54.833Z",
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"datePublished": "2024-05-24T15:09:57.983Z",
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"dateUpdated": "2026-05-11T13:56:54.697Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:56:54.697Z"
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},
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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\nethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()\n\nethtool_set_coalesce() now uses both the .get_coalesce() and\n.set_coalesce() callbacks. But the check for their availability is\nbuggy, so changing the coalesce settings on a device where the driver\nprovides only _one_ of the callbacks results in a NULL pointer\ndereference instead of an -EOPNOTSUPP.\n\nFix the condition so that the availability of both callbacks is\nensured. This also matches the netlink code.\n\nNote that reproducing this requires some effort - it only affects the\nlegacy ioctl path, and needs a specific combination of driver options:\n- have .get_coalesce() and .coalesce_supported but no\n .set_coalesce(), or\n- have .set_coalesce() but no .get_coalesce(). Here eg. ethtool doesn't\n cause the crash as it first attempts to call ethtool_get_coalesce()\n and bails out on error."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ethtool/ioctl.c"
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],
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"net/ethtool/ioctl.c"
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],
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.6",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.6"
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},
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{
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"vulnerable": true,
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/abfdd9e2f0f9699015d72317f74154d3e53664e6"
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"url": "https://git.kernel.org/stable/c/0276af2176c78771da7f311621a25d7608045827"
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}
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],
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"title": "ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"dateUpdated": "2024-08-04T05:39:59.696Z"
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{
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"type": "ssvc",
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"content": {
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"id": "CVE-2021-47556",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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{
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"Technical Impact": "partial"
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T15:35:17.251127Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-11T17:33:20.673Z"
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