vulnerability
Ubuntu: (CVE-2020-36557): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:N/I:N/A:C) | Jul 21, 2022 | Nov 19, 2024 | Sep 5, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
Jul 21, 2022
Added
Nov 19, 2024
Modified
Sep 5, 2025
Description
A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.
Solutions
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-fipsubuntu-upgrade-linux-aws-hweubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-fipsubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-hweubuntu-upgrade-linux-kvmubuntu-upgrade-linux-lts-xenialubuntu-upgrade-linux-oem-osp1ubuntu-upgrade-linux-oracleubuntu-upgrade-linux-raspiubuntu-upgrade-linux-raspi2ubuntu-upgrade-linux-snapdragon
References
- CVE-2020-36557
- https://attackerkb.com/topics/CVE-2020-36557
- CWE-362
- CWE-416
- URL-https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2
- URL-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220
- URL-https://www.cve.org/CVERecord?id=CVE-2020-36557
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