CVE-2026-98669
In the Linux kernel, the following vulnerability has been resolved:
iio: buffer: serialize buffer teardown with mode claims
Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers().
However, iio_device_unregister() disables and deactivates all buffers without taking mlock. This can invalidate buffer state, including active_scan_mask, while a buffer-mode claim is held.
Take mlock in iio_disable_all_buffers() so that unregister honors the mode-claim lifetime guarantee. The info_exist_lock -> mlock ordering matches iio_update_buffers().
CVSS
NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days
- 0.17 %
- Percentile among all scored CVEs
- 6
- Score date
- 10/20/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
References
Show 4 references
Raw JSON (NVD)
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{
"id": "CVE-2026-98669",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
"lessThan": "89f3852a28fcf7bab599280cb082baa0675536db",
"versionType": "git"
},
{
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"version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
"lessThan": "b466db9e68b4741af85f6c017e2bb0a2f025053f",
"versionType": "git"
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{
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"versionType": "git"
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{
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"versionType": "git"
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{
"status": "affected",
"version": "a9c471892d75847671a246619c2148578f22bbc6",
"versionType": "git"
},
{
"status": "affected",
"version": "7bca0af538a49dacb1470f233be0676bdc09605b",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.137",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.60",
"lessThan": "6.2",
"versionType": "semver"
}
],
"programFiles": [
"drivers/iio/industrialio-buffer.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iio/industrialio-buffer.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-10-18T16:17:20.190",
"references": [
{
"url": "https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: serialize buffer teardown with mode claims\n\nBuffer-mode claims hold mlock to guarantee that the device remains in\nbuffer mode until the claim is released. Normal buffer updates take\ninfo_exist_lock followed by mlock in iio_update_buffers().\n\nHowever, iio_device_unregister() disables and deactivates all buffers\nwithout taking mlock. This can invalidate buffer state, including\nactive_scan_mask, while a buffer-mode claim is held.\n\nTake mlock in iio_disable_all_buffers() so that unregister honors the\nmode-claim lifetime guarantee. The info_exist_lock -> mlock ordering\nmatches iio_update_buffers()."
}
],
"lastModified": "2026-10-19T10:19:31.310",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}