CVE-2020-25669

moderate-risk
Published 2021-05-26

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.

Do I need to act?

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0.14% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (13)

Affected Vendors

Debian Linux Netapp

References (16)

Exploit http://www.openwall.com/lists/oss-security/2020/11/05/2
Exploit http://www.openwall.com/lists/oss-security/2020/11/20/5
Patch https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7...
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
Third Party Advisory 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
Exploit http://www.openwall.com/lists/oss-security/2020/11/05/2
Exploit http://www.openwall.com/lists/oss-security/2020/11/20/5
Patch https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7...
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
Third Party Advisory 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
42
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 17/34 · Moderate