Home/CVE/A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lea
CVE

CVE-2020-25670

A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lea

A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations.

HIGH · CVSS 7.8 EPSS 0.00044
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

20
linux kernel>= 3.6 and < 4.4.267
linux kernel>= 4.5 and < 4.9.267
linux kernel>= 4.10 and < 4.14.231
linux kernel>= 4.15 and < 4.19.187
linux kernel>= 4.20 and < 5.4.112
linux kernel>= 5.5 and < 5.10.30
linux kernel>= 5.11 and < 5.11.14
fedoraproject fedoraall 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 · 11:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

30
usnUSN-5343-1
suse-csafSUSE-SU-2022:0325-1
suse-csafSUSE-SU-2022:0291-1
suse-csafSUSE-SU-2022:0293-1
suse-csafSUSE-SU-2022:0296-1
🔗

References & Sources

9
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/2020/11/01/1ExploitMailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/11/4ExploitMailing ListPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5WKTOC76KMH/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUAZT2EUMFH5/
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