Canonical: >> Ubuntu Linux >> 16.04 Security Vulnerabilities
Race condition in Canonical apport up to and including 2.32.0 allows a local attacker to leak sensitive information via PID-reuse by leveraging namespaces.
When handling a crash, the function `_check_global_pid_and_forward`, which detects if the crashing process resided in a container, was being called before `consistency_checks`, which attempts to detect if the crashing process had been replaced. Because of this, if a process crashed and was quickly replaced with a containerized one, apport could be made to forward the core dump to the container, potentially leaking sensitive information. `consistency_checks` is now being called before `_check_global_pid_and_forward`. Additionally, given that the PID-reuse race condition cannot be reliably detected from userspace alone, crashes are only forwarded to containers if the kernel provided a pidfd, or if the crashing process was unprivileged (i.e., if dump mode == 1).
CVSS Score
4.7
EPSS Score
0.0
Published
2025-05-30
Ubuntu's implementation of pulseaudio can be crashed by a malicious program if a bluetooth headset is connected.
CVSS Score
4.0
EPSS Score
0.0
Published
2024-11-23
When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended.
CVSS Score
9.3
EPSS Score
0.002
Published
2024-06-21
It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.
CVSS Score
7.8
EPSS Score
0.001
Published
2024-01-08
Race condition in snap-confine's must_mkdir_and_open_with_perms()
CVSS Score
7.8
EPSS Score
0.001
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
0.022
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
0.584
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
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
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
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