CVE-2026-43206 (GCVE-0-2026-43206)
Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-08 12:41
VLAI?
Title
drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()
The kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8
bytes via memset without checking the buffer size parameter. This allows
unprivileged userspace to trigger an out-of bounds kernel memory write
by passing a small buffer, leading to potential privilege
escalation.
Severity ?
7.8 (High)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
0fc8011f89feb8b2c3008583b777d097e1974660 , < 3e04bc310d80b46eaf481f1fefcbcb37a187412d
(git)
Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < b4034442cb090e4a980bdcc1540948606cbc951b (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < 4857c37c7ba9aa38b9a4c694e8bd8d0091c87940 (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < 75fb57efdd7863fffbc39db23e9cad7aafda26ed (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < 4e72f419e4ed44cb3b60506752d8688c20a60a9b (git) Affected: 0fc8011f89feb8b2c3008583b777d097e1974660 , < 8a70a26c9f34baea6c3199a9862ddaff4554a96d (git) |
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|
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{
"containers": {
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{
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"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_events.c"
],
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],
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"vendor": "Linux",
"versions": [
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"version": "4.17"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.252",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.128",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.16",
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},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"vulnerable": true
},
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()\n\nThe kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8\nbytes via memset without checking the buffer size parameter. This allows\nunprivileged userspace to trigger an out-of bounds kernel memory write\nby passing a small buffer, leading to potential privilege\nescalation."
}
],
"metrics": [
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-08T12:41:14.026Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
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"url": "https://git.kernel.org/stable/c/3e04bc310d80b46eaf481f1fefcbcb37a187412d"
},
{
"url": "https://git.kernel.org/stable/c/de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f"
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{
"url": "https://git.kernel.org/stable/c/b4034442cb090e4a980bdcc1540948606cbc951b"
},
{
"url": "https://git.kernel.org/stable/c/4857c37c7ba9aa38b9a4c694e8bd8d0091c87940"
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{
"url": "https://git.kernel.org/stable/c/75fb57efdd7863fffbc39db23e9cad7aafda26ed"
},
{
"url": "https://git.kernel.org/stable/c/bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b"
},
{
"url": "https://git.kernel.org/stable/c/4e72f419e4ed44cb3b60506752d8688c20a60a9b"
},
{
"url": "https://git.kernel.org/stable/c/8a70a26c9f34baea6c3199a9862ddaff4554a96d"
}
],
"title": "drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()",
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"assignerShortName": "Linux",
"cveId": "CVE-2026-43206",
"datePublished": "2026-05-06T11:28:10.937Z",
"dateReserved": "2026-05-01T14:12:55.993Z",
"dateUpdated": "2026-05-08T12:41:14.026Z",
"state": "PUBLISHED"
},
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"epss": {
"cve": "CVE-2026-43206",
"date": "2026-05-09",
"epss": "0.00012",
"percentile": "0.01766"
},
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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