21 results · Feed
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High 7.8CVE-2026-8933 Public exploit
snap-confine Local Privilege Escalation via Capabilities Misconfiguration or Flaw in Execution Environment Setup
A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-c…
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High 8.4
snapd snap-confine Sandbox Confinement Bypass via Omission of setuid Restriction in Seccomp Templates
A sandbox confinement bypass vulnerability exists in Canonical snapd within its internal execution environment compiler (snap-confine). The default seccomp security templates generated by the engine to restrict system calls do not filter or reject process ope…
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Medium 5.6
AppArmor Base Profile Misconfiguration in snapd Permits Confined Snaps Unauthorized Access to Hashed Passwords via systemd-userdbd
An access control bypass and information disclosure vulnerability exists in the base AppArmor security profile configuration of Canonical snapd. The abstraction rules located in /etc/apparmor.d/abstractions/nss-systemd (inherited via ) inadvertently permit st…
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High 7.8CVE-2026-3888 Public exploit
Local Privilege Escalation in snapd
Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS…
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Medium 4.8
snapd will follow archived symlinks when unpacking a filesystem
In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the s…
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Medium 5.8
snapd non-regular file indefinite blocking read
In snapd versions prior to 2.62, snapd failed to properly check the file type when extracting a snap. The snap format is a squashfs file-system image and so can contain files that are non-regular files (such as pipes or sockets etc). Various file entries with…
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Medium 6.3
snapd allows $HOME/bin symlink
In snapd versions prior to 2.62, when using AppArmor for enforcement of sandbox permissions, snapd failed to restrict writes to the $HOME/bin path. In Ubuntu, when this path exists, it is automatically added to the users PATH. An attacker who could convince a…
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Critical 9.3
When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegat…
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High 8.1
CVE-2024-5138: snapd snapctl auth bypass
The snapctl component within snapd allows a confined snap to interact with the snapd daemon to take certain privileged actions on behalf of the snap. It was found that snapctl did not properly parse command-line arguments, allowing an unprivileged user to tri…
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High 7.8CVE-2022-3328 Public exploit
snapd Race Condition vulnerability
Race condition in snap-confine's must_mkdir_and_open_with_perms()
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Critical 10.0
Using the TIOCLINUX ioctl request, a malicious snap could inject contents into the input of the controlling terminal wh…
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High 8.2
snapd could be made to bypass intended access restrictions through snap content interfaces and layout paths
snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap c…
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High 7.8
snapd could be made to escalate privileges and run programs as administrator
snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd ver…
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Low 3.8
snapd created ~/snap with too-wide permissions
snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and…
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High 7.8CVE-2021-44731 Public exploit
snapd could be made to escalate privileges and run programs as administrator
A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and c…
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Medium 5.9
Sandbox escape vulnerability via snapctl user-open (xdg-open)
It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling…
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Unscored —
snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the cu…
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Unscored —
snap-confine in snapd before 2.38 incorrectly set the ownership of a snap application to the uid and gid of the first c…
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High 8.8
Local privilege escalation via snapd socket
Canonical snapd before version 2.37.1 incorrectly performed socket owner validation, allowing an attacker to run arbitrary commands as root. This issue affects: Canonical snapd versions prior to 2.37.1.
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Medium 5.7CVE-2019-7303 Public exploit
Snapd seccomp filter TIOCSTI ioctl bypass
A vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, …
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Unscored —
In snapd 2.27 through 2.29.2 the 'snap logs' command could be made to call journalctl without match arguments and there…