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CVE
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CVE-2020-25669Date: (C)2020-12-31   (M)2024-04-19


A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
http://www.openwall.com/lists/oss-security/2020/11/05/2
http://www.openwall.com/lists/oss-security/2020/11/20/5
https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e
https://security.netapp.com/advisory/ntap-20210702-0006/
https://www.openwall.com/lists/oss-security/2020/11/05/2%2C
https://www.openwall.com/lists/oss-security/2020/11/20/5%2C

CPE    2
cpe:/o:debian:debian_linux:9.0
cpe:/o:linux:linux_kernel
CWE    1
CWE-416
OVAL    25
oval:org.secpod.oval:def:705918
oval:org.secpod.oval:def:70403
oval:org.secpod.oval:def:89002777
oval:org.secpod.oval:def:71591
...

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