CVE-2020-25669: Use After Free
First published: Wed May 26 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <4.4.245 | |
| Linux Kernel | >=4.5<4.9.245 | |
| Linux Kernel | >=4.10<4.14.208 | |
| Linux Kernel | >=4.15<4.19.159 | |
| Linux Kernel | >=4.20<5.4.79 | |
| Linux Kernel | >=5.5<5.9.10 | |
| Debian | =9.0 | |
| NetApp Cloud Backup | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| All of | ||
| NetApp H500E | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700E | ||
| NetApp H700E | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| NetApp H500E | ||
| NetApp H500e Firmware | ||
| NetApp H700E | ||
| NetApp H700E | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
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Reference Links
- https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e
- https://www.openwall.com/lists/oss-security/2020/11/05/2,
- https://www.openwall.com/lists/oss-security/2020/11/20/5,
- 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://security.netapp.com/advisory/ntap-20210702-0006/
- https://launchpad.net/bugs/cve/CVE-2020-25669
- https://www.openwall.com/lists/oss-security/2020/11/05/2%2C
- https://www.openwall.com/lists/oss-security/2020/11/20/5%2C
- https://www.openwall.com/lists/oss-security/2020/11/05/2
- https://security-tracker.debian.org/tracker/CVE-2020-25669
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25669
- https://nvd.nist.gov/vuln/detail/CVE-2020-25669
- https://ubuntu.com/security/CVE-2020-25669
Frequently Asked Questions
What is the severity of CVE-2020-25669?
CVE-2020-25669 has been assigned a medium severity rating due to the potential for a Use After Free vulnerability affecting the Linux Kernel.
How do I fix CVE-2020-25669?
To fix CVE-2020-25669, you should upgrade the Linux Kernel to version 5.10.223-1 or later.
Which versions of the Linux Kernel are affected by CVE-2020-25669?
CVE-2020-25669 affects Linux Kernel versions between 4.4.0 and 5.4.x and several other specific range versions.
What systems are impacted by CVE-2020-25669?
CVE-2020-25669 impacts various Linux distributions, including Debian Linux and may affect systems running specific NetApp firmware.
What type of vulnerability is CVE-2020-25669?
CVE-2020-25669 is classified as a Use After Free vulnerability, which can potentially lead to unauthorized access or system crashes.
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- vendor/netapp
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- canonical/netapp solidfire & hci management node
- canonical/netapp solidfire
- canonical/netapp h300s firmware
- canonical/netapp h500e firmware
- canonical/netapp h700s
- canonical/netapp h300e
- canonical/netapp h300e firmware
- canonical/netapp h500e
- canonical/netapp h700e
- canonical/netapp h410s
- canonical/netapp h410s firmware
- canonical/netapp h410c
- canonical/netapp h410c firmware