CVE-2026-74527
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Block VFs from clobbering special CGX PKIND state PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND programming. When HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must not reset the LMAC RX PKIND or default TX parse config over the PF setup. Add cgx_get_pkind() and rvu_cgx_is_pkind_config_permitted() so VFs skip cgx_set_pkind(), rvu_npc_set_pkind(), and NIX_AF_LFX_TX_PARSE_CFG updates when the LMAC is using NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-08-15 13:17:57.983000
Last modified
2026-10-30 13:19:59.260000
View original CVE JSON
{
"id": "CVE-2026-74527",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-15T13:17:57.983",
"lastModified": "2026-10-30T13:19:59.260",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: Block VFs from clobbering special CGX PKIND state\n\nPF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND\nprogramming. When HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must\nnot reset the LMAC RX PKIND or default TX parse config over the PF setup.\n\nAdd cgx_get_pkind() and rvu_cgx_is_pkind_config_permitted() so VFs skip\ncgx_set_pkind(), rvu_npc_set_pkind(), and NIX_AF_LFX_TX_PARSE_CFG updates\nwhen the LMAC is using NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/af/cgx.c",
"drivers/net/ethernet/marvell/octeontx2/af/cgx.h",
"drivers/net/ethernet/marvell/octeontx2/af/rvu.h",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "f24f7ce6fb2d1ae080a05371afddba30a3e0b919",
"versionType": "git",
"status": "affected"
},
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "1106b26e86ac1e7e4d1f634bcd532c5d44e60620",
"versionType": "git",
"status": "affected"
},
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "7e888d7dd11519330ba6c6a28391d55891463a6a",
"versionType": "git",
"status": "affected"
},
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "a76243488740a07c81c9adf431685bb7f7c31d8c",
"versionType": "git",
"status": "affected"
},
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "d3c6b0f48f126a36955b3fb4154a59d0b3621d97",
"versionType": "git",
"status": "affected"
},
{
"version": "94d942c5fb970ac2166216838b278613decfa9a0",
"lessThan": "3bd438a58e910db5dc369aa25dfed1fc95f1b596",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/af/cgx.c",
"drivers/net/ethernet/marvell/octeontx2/af/cgx.h",
"drivers/net/ethernet/marvell/octeontx2/af/rvu.h",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.20",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.20",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.114",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.57",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1.8",
"lessThanOrEqual": "7.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.0,
"impactScore": 6.0
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-16T18:59:11.086821Z",
"id": "CVE-2026-74527",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1106b26e86ac1e7e4d1f634bcd532c5d44e60620",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3bd438a58e910db5dc369aa25dfed1fc95f1b596",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7e888d7dd11519330ba6c6a28391d55891463a6a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/a76243488740a07c81c9adf431685bb7f7c31d8c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d3c6b0f48f126a36955b3fb4154a59d0b3621d97",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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]
}