CVE-2020-25668
HIGHCVSS 7/10EPSS 1.03%
Last modified
CVE-2020-25668 is a high-severity vulnerability rated 7/10 on the CVSS scale. A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.
Description
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.4.242 |
| Linux | Linux Kernel | >= 4.5, < 4.9.242 |
| Linux | Linux Kernel | >= 4.10, < 4.14.204 |
| Linux | Linux Kernel | >= 4.15, < 4.19.155 |
| Linux | Linux Kernel | >= 4.20, < 5.4.75 |
| Linux | Linux Kernel | >= 5.5, < 5.9.5 |
| Debian | Debian Linux | 9.0 |
| Netapp | Cloud Backup | All versions |
| Netapp | Solidfire \& Hci Management Node | All versions |
| Netapp | Solidfire Baseboard Management Controller Firmware | All versions |
| Netapp | H410c Firmware | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | A250 Firmware | All versions |
| Netapp | 500f Firmware | All versions |
References
- http://www.openwall.com/lists/oss-security/2020/10/30/1Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/04/3Exploit, Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220Mailing List, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210702-0005/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/30/1Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/04/3Exploit, Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220Mailing List, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210702-0005/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-25668?
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
How severe is CVE-2020-25668?
CVE-2020-25668 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25668?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-25668?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST