194 lines
9.3 KiB
JSON
194 lines
9.3 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-2021-47148",
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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": "2024-03-04T18:12:48.845Z",
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"datePublished": "2024-03-25T09:07:44.472Z",
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"dateUpdated": "2026-08-05T08:46:19.658Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:46:19.658Z"
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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\nocteontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()\n\nThis function is called from ethtool_set_rxfh() and \"*rss_context\"\ncomes from the user. Add some bounds checking to prevent memory\ncorruption."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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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:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path is reached only through a local SIOCETHTOOL ioctl (ETHTOOL_SRSSH → ethtool_set_rxfh → otx2_set_rxfh_context); it is not triggered by received network packets or a remote service.\nAC:L - The attacker fully controls the rss_context u32 from userspace and can reliably pass an out-of-bounds value; no race or external conditions beyond the attacker's control are required to hit the overflow.\nPR:L - ETHTOOL_SRSSH requires CAP_NET_ADMIN via ns_capable(net->user_ns, CAP_NET_ADMIN), which is obtainable without real init-namespace root when an octeontx2 PF/VF is present in a userns-owned netns (common SR-IOV/container deployments), so privileges are Low under kernel CNA guidance.\nUI:N - No victim action is required; the attacker issues the ethtool ioctl directly once they have local access and the needed capability.\nS:U - The corruption occurs in the host/guest kernel driver and elevates impact only within that same kernel security authority; it is not a VM escape or IOMMU/DMA boundary bypass.\nC:H - A user-controlled index into rss_ctx[] performs an out-of-bounds pointer load and can be paired with write/free primitives, which per guidance for memory corruption is treated as enabling high confidentiality impact.\nI:H - With an OOB context the code writes attacker-influenced indir bytes through the fetched pointer and can kfree an OOB pointer on delete, giving classic out-of-bounds write / arbitrary-free integrity compromise.\nA:H - Invalid pointer dereference or free from the out-of-bounds rss_ctx access can oops/panic the kernel, so availability impact is High."
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}
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]
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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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"drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c"
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],
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"versions": [
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{
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"version": "81a4362016e7d8b17031fe1aa43cdb58a7f0f163",
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"lessThan": "389146bc6d2bbb20714d06624b74856320ce40f7",
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"status": "affected",
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"status": "affected",
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}
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]
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},
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{
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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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"drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c"
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],
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"versions": [
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{
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"version": "5.12",
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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": "5.12",
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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": "5.12.9",
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"lessThanOrEqual": "5.12.*",
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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": "5.13",
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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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],
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"cpeApplicability": [
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"versionStartIncluding": "5.12",
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"versionEndExcluding": "5.12.9"
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"vulnerable": true,
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"references": [
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"url": "https://git.kernel.org/stable/c/389146bc6d2bbb20714d06624b74856320ce40f7"
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"url": "https://git.kernel.org/stable/c/e5cc361e21648b75f935f9571d4003aaee480214"
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}
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],
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"title": "octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()",
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"x_generator": {
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"adp": [
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"type": "ssvc",
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"content": {
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"timestamp": "2024-06-26T20:36:23.128673Z",
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"id": "CVE-2021-47148",
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"options": [
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{
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"Exploitation": "none"
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"title": "CISA ADP Vulnrichment",
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