Home/CVE/A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt
CVE

CVE-2020-25669

A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt

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.

HIGH · CVSS 7.8 EPSS 0.00055
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

18
linux kernel< 4.4.245
linux kernel>= 4.5 and < 4.9.245
linux kernel>= 4.10 and < 4.14.208
linux kernel>= 4.15 and < 4.19.159
linux kernel>= 4.20 and < 5.4.79
linux kernel>= 5.5 and < 5.9.10
debian linuxall versions
netapp cloud backupall versions
▣

Scoring & Timeline

7.8
HIGH · 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 NVD26 May 2021 · 12:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

24
usnUSN-4912-1
usnUSN-4749-1
usnUSN-4751-1
usnUSN-4750-1
suse-csafSUSE-SU-2021:14630-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2020/11/05/2ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/11/20/5ExploitMailing ListThird Party Advisory
https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7ePatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0006/Third Party Advisory
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