Canonical: >> Ubuntu Linux >> 20.04 Security Vulnerabilities
Race condition in snap-confine's must_mkdir_and_open_with_perms()
CVSS Score
7.8
EPSS Score
0.001
Published
2024-01-08
It was discovered that when exec'ing from a non-leader thread, armed POSIX CPU timers would be left on a list but freed, leading to a use-after-free.
CVSS Score
5.3
EPSS Score
0.004
Published
2024-01-08
CVE-2022-2586
It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.
Known exploited
CVSS Score
5.3
EPSS Score
0.025
Published
2024-01-08
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
CVSS Score
5.3
EPSS Score
0.553
Published
2024-01-08
A feature in LXD (LP#1829071), affects the default configuration of Ubuntu Server which allows privileged users in the lxd group to escalate their privilege to root without requiring a sudo password.
CVSS Score
5.0
EPSS Score
0.0
Published
2023-12-12
Bluetooth HID Hosts in BlueZ may permit an unauthenticated Peripheral role HID Device to initiate and establish an encrypted connection, and accept HID keyboard reports, potentially permitting injection of HID messages when no user interaction has occurred in the Central role to authorize such access. An example affected package is bluez 5.64-0ubuntu1 in Ubuntu 22.04LTS. NOTE: in some cases, a CVE-2020-0556 mitigation would have already addressed this Bluetooth HID Hosts issue.
CVSS Score
6.3
EPSS Score
0.287
Published
2023-12-08
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.
We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
CVSS Score
7.8
EPSS Score
0.0
Published
2023-09-06
In Ubuntu's accountsservice an unprivileged local attacker can trigger a use-after-free vulnerability in accountsservice by sending a D-Bus message to the accounts-daemon process.
CVSS Score
8.1
EPSS Score
0.001
Published
2023-09-01
Using the TIOCLINUX ioctl request, a malicious snap could inject contents into the input of the controlling terminal which could allow it to cause arbitrary commands to be executed outside of the snap sandbox after the snap exits. Graphical terminal emulators like xterm, gnome-terminal and others are not affected - this can only be exploited when snaps are run on a virtual console.
CVSS Score
10.0
EPSS Score
0.001
Published
2023-09-01
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.
CVSS Score
7.8
EPSS Score
0.0
Published
2023-08-14