Vendor
Ubuntu
40 known vulnerabilities.
Ubuntu at a glance
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 1 | 0 |
| Oct 2026 | 0 | 0 |
| Sep 2026 | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 1 | 0 |
| Feb 2026 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 1 | 0 |
| Nov 2025 | 1 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 2 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
Products
Latest advisories
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High max 10.0
Linux Kernel: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um root Rechte zu erlangen, um einen Denial of Service herbeizuführen oder einen nicht näher spezifizierten Angriff durchzuführen.
first Aug 16, 2026 -
High max 8.0
util-linux: Mehrere Schwachstellen
Ein lokaler Angreifer kann mehrere Schwachstellen in util-linux ausnutzen, um Administratorrechte zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.
first Aug 19, 2026 -
High max 9.8
Linux Kernel: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, darunter möglicherweise die Ausführung von beliebigem Code, die Ausweitung von Berechtigungen, die Offenlegung von Informationen, d…
first Aug 26, 2026 -
Medium max 8.0
libxml2: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in libxml2 ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Daten zu manipulieren oder offenzulegen und um einen Denial of Service herbeizuführen.
first Sep 6, 2026 -
High max 7.7
Squid: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Squid ausnutzen, um einen Denial of Service Angriff durchzuführen, um beliebigen Programmcode auszuführen und um Sicherheitsvorkehrungen zu umgehen.
first Sep 13, 2026
40 results · Feed
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High 7.7CVE-2026-109518 Public exploit
APT RCE via hard link reuse
On Debian, Ubuntu, and derivative Linux distributions, an on-path attacker who can manipulate the HTTP traffic (including a malicious mirror or proxy) between an APT client and an archive server triggered by a package install can trick the client into install…
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Low 2.7
Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAP…
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High 7.7
Privilege Escalation in MAAS via Websocket Request Manipulation
An Improper Input Validation vulnerability exists in the user websocket handler of MAAS. An authenticated, unprivileged attacker can intercept a user.update websocket request and inject the is_superuser property set to true. The server improperly validates th…
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Low 3.7
UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu
The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 and 2024.02-2ubuntu0.3 disable the Shell. Some previous ver…
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High 7.5
DDoS in Ubuntu package linux-bluefield
Running DDoS on tcp port 22 will trigger a kernel crash. This issue is introduced by the backport of a commit regarding nft_lookup without the subsequent fixes that were introduced after this commit. The resolution of this CVE introduces those commits to the …
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Medium 5.5
Accountsservice incorrectly drops privileges
accountsservice no longer drops permissions when writting .pam_environment
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Medium 4.4
aufs: improperly managed inode reference counts in the vfsub_dentry_open() method
It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.
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High 7.8
Free of static data in accountsservice
Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the…
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High 8.8CVE-2021-3492 Public exploit
Ubuntu linux kernel shiftfs file system double free vulnerability
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could u…
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High 8.8
The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting …
KEV Oct 20, 2022 -
High 8.8CVE-2020-27347 Public exploit
tmux stack buffer overflow in function input_csi_dispatch_sgr_colon
In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.
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Critical 9.3
Libvirt Service Arbitrary File Write Privilege Escalation Vulnerability
Ubuntu's packaging of libvirt in 20.04 LTS created a control socket with world read and write permissions. An attacker could use this to overwrite arbitrary files or execute arbitrary code.
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Medium 5.7
GRUB2 contained integer overflows when handling the initrd command, leading to a heap-based buffer overflow.
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflo…
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Medium 6.4
GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is boot…
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Medium 6.4
GRUB2 contains a race condition leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing.
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restr…
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Medium 5.9
Online Accounts Signon daemon gives out all oauth tokens to any app
signond before 8.57+15.04.20141127.1-0ubuntu1, as used in Ubuntu Touch, did not properly restrict applications from querying oath tokens due to incorrect checks and the missing installation of the signon-apparmor-extension. An attacker could use this create a…
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High 7.1CVE-2019-15794 Public exploit
Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs
Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma->vm_file in their mmap handlers. On error the original value is not restored, and the reference is put for t…
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Medium 6.5CVE-2019-15793 Public exploit
Mishandling of file-system uid/gid with namespaces in shiftfs
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whe…
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High 7.1CVE-2019-15792 Public exploit
Type confusion in shiftfs
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->pri…
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High 7.1CVE-2019-15791 Public exploit
Reference count underflow in shiftfs
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the …
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Medium 5.5
Ubuntu 18.04 Linux kernel i915 incomplete fix for CVE-2019-14615
The fix for the Linux kernel in Ubuntu 18.04 LTS for CVE-2019-14615 ("The Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors.") was discovered to be incomplete, meaning that in versions of the kernel …
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Unscored —
A Security Bypass vulnerability exists in Ubuntu Cobbler before 2,2,2 in the cobbler-ubuntu-import script due to an err…
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Medium 6.5
Apport contains a TOCTTOU vulnerability when reading the users ~/.apport-ignore.xml
Apport before versions 2.14.1-0ubuntu3.29+esm1, 2.20.1-0ubuntu2.19, 2.20.9-0ubuntu7.7, 2.20.10-0ubuntu27.1, 2.20.11-0ubuntu5 contained a TOCTTOU vulnerability when reading the users ~/.apport-ignore.xml file, which allows a local attacker to replace this file…
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Medium 6.5
Integer overflow in whoopsie results in out-of-bounds heap write
An integer overflow in whoopsie before versions 0.2.52.5ubuntu0.1, 0.2.62ubuntu0.1, 0.2.64ubuntu0.1, 0.2.66, results in an out-of-bounds write to a heap allocated buffer when processing large crash dumps. This results in a crash or possible code-execution in …
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High 7.0
chmod race in doUidshiftIntoContainer
LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's cho…
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Medium 5.5
Probe-and-enlist for SeaMicro chassis writes password to the log
The SeaMicro provisioning of Ubuntu MAAS logs credentials, including username and password, for the management interface. This issue affects Ubuntu MAAS versions prior to 1.9.2.
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High 7.4
Apport privilege escalation through Python module imports
Any Python module in sys.path can be imported if the command line of the process triggering the coredump is Python and the first argument is -m in Apport before 2.19.2 function _python_module_path.
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Medium 6.4
Juju Joyent provider uploads user's private ssh key by default
Juju Core's Joyent provider before version 1.25.5 uploads the user's private ssh key.
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Medium 5.7
python-dbusmock arbitrary code execution or file overwrite when templates are loaded from /tmp
python-dbusmock before version 0.15.1 AddTemplate() D-Bus method call or DBusTestCase.spawn_server_template() method could be tricked into executing malicious code if an attacker supplies a .pyc file.
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Low 3.9
Content-hub DBUS API doesn't prevent confined apps from passing paths to files without access
Content Hub before version 0.0+15.04.20150331-0ubuntu1.0 DBUS API only requires a file path for a content item, it doesn't actually require the confined app have access to the file to create a transfer. This could allow a malicious application using the DBUS …
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Low 2.0
unity-scope-gdrive search feature logs search terms to syslog
All versions of unity-scope-gdrive logs search terms to syslog.
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Low 2.0
uuid.uuid1() is not suitable as an unguessable identifier/token
A vulnerability in generate_filestorage_key of Ubuntu MAAS allows an attacker to brute-force filenames. This issue affects Ubuntu MAAS versions prior to 1.9.2.
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Critical 9.6
MAAS API vulnerable to CSRF attack
A vulnerability in the REST API of Ubuntu MAAS allows an attacker to cause a logged-in user to execute commands via cross-site scripting. This issue affects MAAS versions prior to 1.9.2.
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Medium 6.7
UDM doesn't check for confinement before running post-processing commands
UDM provides support for running commands after a download is completed, this is currently made use of for click package installation. This functionality was not restricted to unconfined applications. Before UDM version 1.2+16.04.20160408-0ubuntu1 any confine…
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Medium 4.8
Using a specially crafted fallback art property, scopes can execute arbitrary QML code in context of unity8-dash
Versions of Unity8 before 8.11+16.04.20160122-0ubuntu1 file plugins/Dash/CardCreator.js will execute any code found in place of a fallback image supplied by a scope.
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Low 1.8
A malicious webview could install long-lived unload handlers that re-use an incognito BrowserContext that is queued for…
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High 7.1
The Snapweb interface before version 0.21.2 was exposing controls to install or remove snap packages without controllin…
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Low 1.6
Unity8 converged application lifecycle allows background applications to use on-screen keyboard when not top-most
In all versions of Unity8 a running but not active application on a large-screen device could talk with Maliit and consume keyboard input.
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High 8.6
get_file_by_name does not check owner
A vulnerability in maasserver.api.get_file_by_name of Ubuntu MAAS allows unauthenticated network clients to download any file. This issue affects: Ubuntu MAAS versions prior to 1.9.2.
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Unscored —
Insecure temporary file use in base-files
The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privil…