CVE-2026-68245
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()
The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only valid while the lock is still being held. Once xa_unlock_irqrestore is called and returned, the pointer is no longer under lock and is subject to modification. Since, the caller still dereferences vm->task_info in amdgpu_vm_get_task_info_vm() after the lock is removed, this causes a use after unlock problem.
Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid() through removing the amdgpu_vm_get_vm_from_pasid() function from amdgpu_vm.c and making the relevant code inline to hold the lock while it is still in use.
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(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Base score: 7.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.18%
- Percentile among all scored CVEs: 6
- Score date: 10/5/2026
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).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1068Exploitation for Privilege Escalationprivilege escalation85 %
Vulnerabilidad local (AV:L, PR:L) en Linux kernel con acceso a memoria sin privilegios especiales (use-after-unlock). Permite DoS o corrupción de memoria.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
References
Raw JSON (NVD)
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{
"id": "CVE-2026-68245",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"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": "b8f67b9ddf4f8fe6dd536590712b5912ad78f99c",
"lessThan": "fe16a7e5336ae888751984e30c451fbf7cfa5df7",
"versionType": "git"
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{
"status": "affected",
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"lessThan": "1173190412fb9d12e7efce76734118d9712ff970",
"versionType": "git"
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{
"status": "affected",
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"versionType": "git"
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{
"status": "affected",
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"lessThan": "04cc4aa3617b0ed67e859f91f09de5d896a46f3a",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-08-10T13:20:12.960",
"references": [
{
"url": "https://git.kernel.org/stable/c/04cc4aa3617b0ed67e859f91f09de5d896a46f3a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1173190412fb9d12e7efce76734118d9712ff970",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5d5fb9124a2bba96a7807086d8fe0f7ce810d546",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/fe16a7e5336ae888751984e30c451fbf7cfa5df7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()\n\nThe vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only\nvalid while the lock is still being held. Once xa_unlock_irqrestore is\ncalled and returned, the pointer is no longer under lock and is subject\nto modification. Since, the caller still dereferences vm->task_info in\namdgpu_vm_get_task_info_vm() after the lock is removed, this causes a\nuse after unlock problem.\n\nRemove the lifetime issue present in amdgpu_vm_get_task_info_pasid()\nthrough removing the amdgpu_vm_get_vm_from_pasid() function from\namdgpu_vm.c and making the relevant code inline to hold the lock while\nit is still in use.\n\n(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)"
}
],
"lastModified": "2026-08-18T07:16:50.833",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}