CVE-2020-25669
Published: May 26, 2021Last modified: November 8, 2023
Description
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.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack Vector | LOCAL |
Attack complexity | LOW |
Privileges required | LOW |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | HIGH |
Integrity impact | HIGH |
Availability impact | HIGH |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.50-r0) |
Stream | linux-lts | Not affected (6.1.50-r0) |
References
- 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://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- 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