CVE-2026-98367
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept We need to clear cep before release state_lock as siw_qp_llp_close and siw_qp_modify->siw_qp_llp_close did. Otherwise if siw_qp_modify() fails in siw_accept(), the QP's state_lock is released before the error path cleanup. A concurrent ibv_modify_qp() transitioning the QP to ERROR can race in this window: siw_accept() ibv_modify_qp(ERROR) ---------------------- ---------------------- siw_qp_modify() fails up_write(&qp->state_lock) down_write(&qp->state_lock) nextstate_from_idle(): if (qp->cep) siw_cep_put(qp->cep) <- frees cep qp->cep = NULL goto error cep->qp = NULL <- UAF Clear qp->cep and drop the association reference taken by siw_cep_get(), all under the write lock held from the initial down_write(&qp->state_lock). Thread B therefore sees qp->cep == NULL, skips its own put, and cannot free the cep before siw_accept() is done with it.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-06 09:18:30.970000
Last modified
2026-10-19 10:18:39.687000
View original CVE JSON
{
"id": "CVE-2026-98367",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-06T09:18:30.970",
"lastModified": "2026-10-19T10:18:39.687",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept\n\nWe need to clear cep before release state_lock as siw_qp_llp_close and\nsiw_qp_modify->siw_qp_llp_close did.\n\nOtherwise if siw_qp_modify() fails in siw_accept(), the QP's state_lock\nis released before the error path cleanup. A concurrent ibv_modify_qp()\ntransitioning the QP to ERROR can race in this window:\n\n siw_accept() ibv_modify_qp(ERROR)\n ---------------------- ----------------------\n siw_qp_modify() fails\n up_write(&qp->state_lock)\n down_write(&qp->state_lock)\n nextstate_from_idle():\n\t\t\t\t if (qp->cep)\n siw_cep_put(qp->cep) <- frees cep\n qp->cep = NULL\n goto error\n cep->qp = NULL <- UAF\n\nClear qp->cep and drop the association reference taken by siw_cep_get(),\nall under the write lock held from the initial down_write(&qp->state_lock).\nThread B therefore sees qp->cep == NULL, skips its own put, and cannot free\nthe cep before siw_accept() is done with it."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/infiniband/sw/siw/siw_cm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "e3f039082856adab7e195dea1af45d93dd6a3f1c",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "ad50d19f3d1ce052b3a146143581e930a1efb33e",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "030306bbb9273af80f14d7af20129661964cd9a7",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "df2584750314336edcbcc21fb388e04b260f35b7",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "9dcc0f4e488b70cff81e0e5717a498c929cf5de3",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "bfdc744bf20ae4c3ef2e470298de5237c5c9a13c",
"versionType": "git",
"status": "affected"
},
{
"version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7",
"lessThan": "32cd87f54dd1070020e664ccb0312a9f0fea79b4",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/infiniband/sw/siw/siw_cm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.3",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.3",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.271",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.222",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.189",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.158",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.112",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.54",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.8",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"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:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/030306bbb9273af80f14d7af20129661964cd9a7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/32cd87f54dd1070020e664ccb0312a9f0fea79b4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9dcc0f4e488b70cff81e0e5717a498c929cf5de3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ad50d19f3d1ce052b3a146143581e930a1efb33e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/bfdc744bf20ae4c3ef2e470298de5237c5c9a13c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/df2584750314336edcbcc21fb388e04b260f35b7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e3f039082856adab7e195dea1af45d93dd6a3f1c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}