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CVE

CVE-2020-27820

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if remo

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

MEDIUM · CVSS 4.7 EPSS 0.00024
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

8
linux kernel> 2.6.12 and < 5.4.162
linux kernel> 5.5 and < 5.10.82
linux kernel> 5.11 and < 5.15.5
linux kernelall versions
fedoraproject fedoraall versions
oracle communications cloud native core binding support functionall versions
oracle communications cloud native core network exposure functionall versions
oracle communications cloud native core policyall versions
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Nov 2021 · 12:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

21
rhsaRHSA-2022:1988Low
rhsaRHSA-2022:1975Moderate
usnUSN-5415-1
usnUSN-5413-1
suse-csafSUSE-SU-2022:14905-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=1901726Issue TrackingPatchThird Party Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/Mailing ListVendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/Mailing ListVendor Advisory
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/Mailing ListVendor Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
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