USN-1700-2: Linux kernel (OMAP4) regression

USN-1700-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. We apologize for the inconvenience. Original advisory details: A flaw was discovered in the Linux kernel's handling of script...

USN-1686-1: FreeType vulnerabilities

Mateusz Jurczyk discovered that FreeType did not correctly handle certain malformed BDF font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash or possibly execute arbitrary code with user privileges...

USN-1562-1: Linux kernel (Natty backport) vulnerability

Some errors where discovered in the Linux kernel's UDF file system, which is used to mount some CD-ROMs and DVDs. An unprivileged local user could use these flaws to crash the system...

USN-1432-1: Linux kernel vulnerabilities

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. CVE-2011-4086 A flaw was discovered in the Linux kernel's cifs file system. An unprivileged local user could exploit this flaw to...

USN-1431-1: Linux kernel vulnerabilities

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. CVE-2011-4086 Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the...

USN-1394-1: linux-ti-omap4 vulnerabilities

Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's handling of IPv4 icmp packets. A remote user could exploit this to cause a denial of service. CVE-2011-1927 Vegard Nossum discovered a leak in the kernel's inotifyinit system call. A local, unprivileged user could exploit...

USN-1279-1: Linux (Natty backport) vulnerabilities

Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service. CVE-2011-2183 Vasily Averin discovered that the NFS Lock Manager NLM incorrectly handled unlock requests. A...

USN-1232-1: X.Org X server vulnerabilities

It was discovered that the X server incorrectly handled certain malformed input. An authorized attacker could exploit this to cause the X server to crash, leading to a denial or service, or possibly execute arbitrary code with root privileges. This issue only affected Ubuntu 10.04 LTS and 10.10...

USN-1213-1: Thunderbird vulnerabilities

Benjamin Smedberg, Bob Clary, Jesse Ruderman, and Josh Aas discovered multiple memory vulnerabilities in the Gecko rendering engine. An attacker could use these to possibly execute arbitrary code with the privileges of the user invoking Thunderbird. CVE-2011-2995, CVE-2011-2996 Boris Zbarsky...

USN-1210-1: Firefox and Xulrunner vulnerabilities

Benjamin Smedberg, Bob Clary, Jesse Ruderman, and Josh Aas discovered multiple memory vulnerabilities in the browser rendering engine. An attacker could use these to possibly execute arbitrary code with the privileges of the user invoking Firefox. CVE-2011-2995, CVE-2011-2996 Boris Zbarsky...

USN-1133-1: Linux kernel vulnerabilities

Nelson Elhage discovered that Econet did not correctly handle AUN packets over UDP. A local attacker could send specially crafted traffic to crash the system, leading to a denial of service. CVE-2010-4342 Dan Rosenberg discovered that the OSS subsystem did not handle name termination correctly. A...

USN-1061-1: iTALC vulnerability

Stéphane Graber discovered that the iTALC private keys shipped with the Edubuntu Live DVD were not correctly regenerated once Edubuntu was installed. If an iTALC client was installed with the vulnerable keys, a remote attacker could gain control of the system. Only systems using keys from the...

USN-974-2: Linux kernel regression

USN-974-1 fixed vulnerabilities in the Linux kernel. The fixes for CVE-2010-2240 caused failures for Xen hosts. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not...

USN-930-2: apturl, Epiphany, gecko-sharp, gnome-python-extras, liferea, rhythmbox, totem, ubufox, yelp update

USN-930-1 fixed vulnerabilities in Firefox and Xulrunner. This update provides updated packages for use with Firefox 3.6 and Xulrunner 1.9.2 on Ubuntu 8.04 LTS. Original advisory details: If was discovered that Firefox could be made to access freed memory. If a user were tricked into viewing a...

USN-810-3: NSS regression

USN-810-1 fixed vulnerabilities in NSS. Jozsef Kadlecsik noticed that the new libraries on amd64 did not correctly set stack memory flags, and caused applications using NSS e.g. Firefox to have an executable stack. This reduced the effectiveness of some defensive security protections. This update...

USN-788-1: Tomcat vulnerabilities

Iida Minehiko discovered that Tomcat did not properly normalise paths. A remote attacker could send specially crafted requests to the server and bypass security restrictions, gaining access to sensitive content. CVE-2008-5515 Yoshihito Fukuyama discovered that Tomcat did not properly handle error...

USN-779-1: Firefox and Xulrunner vulnerabilities

Several flaws were discovered in the browser and JavaScript engines of Firefox. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. CVE-2009-1392,...

USN-701-2: Thunderbird vulnerabilities

Several flaws were discovered in the browser engine. If a user had Javascript enabled, these problems could allow an attacker to crash Thunderbird and possibly execute arbitrary code with user privileges. CVE-2008-5500 Boris Zbarsky discovered that the same-origin check in Thunderbird could be...

USN-486-1: Linux kernel vulnerabilities

The compatsysmount function allowed local users to cause a denial of service when mounting a smbfs filesystem in compatibility mode. CVE-2006-7203 The Omnikey CardMan 4040 driver cm4040cs did not limit the size of buffers passed to read and write. A local attacker could exploit this to execute...

USN-302-1: Linux kernel vulnerabilities

An integer overflow was discovered in the doreplace function. A local user process with the CAPNETADMIN capability could exploit this to execute arbitrary commands with full root privileges. However, none of Ubuntu's supported packages use this capability with any non-root user, so this only...

USN-99-2: Fixed php4 packages for USN-99-1

USN-99-1 fixed a safe mode bypass which allowed malicious PHP scripts to circumvent path restrictions by creating a specially crafted directory whose length exceeded the capacity of the realpath function CAN-2004-1064. However, this caused severe regressions, some applications like SquirrelMail a...

USN-7432-1: libsoup vulnerabilities

It was discovered that libsoup could be made to read out of bounds. An attacker could possibly use this issue to cause applications using libsoup to crash, resulting in a denial of service. CVE-2025-2784, CVE-2025-32050, CVE-2025-32052, CVE-2025-32053 It was discovered that libsoup could be made ...

USN-7424-1: Expat vulnerability

It was discovered that Expat could crash due to stack overflow when processing XML documents with deeply nested entity references. If a user or automated system were tricked into processing specially crafted XML input, an attacker could use this issue to cause a denial of service...

USN-7261-2: Vim vulnerability

USN-7261-1 fixed vulnerabilities in Vim. This update provides the corresponding updates for Ubuntu 24.04 LTS. Original advisory details: It was discovered that Vim incorrectly handled certain internal calls when scrolling a window. An attacker could possibly use this issue to cause a denial of...

USN-7369-1: elfutils vulnerabilities

It was discovered that readelf from elfutils could be made to read out of bounds. If a user or automated system were tricked into running readelf on a specially crafted file, an attacker could cause readelf to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS...

USN-7287-1: libcap2 vulnerability

Tianjia Zhang discovered the libcap2 PAM module pamcap incorrectly handled parsing group names in the configuration file. This could result in certain users being granted capabilities, contrary to expectations...

USN-7279-1: WebKitGTK vulnerabilities

Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and...

USN-6627-1: libde265 vulnerabilities

It was discovered that libde265 could be made to read out of bounds. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. CVE-2021-35452, CVE-2021-36411, CVE-2022-43238, CVE-2022-43241,...

USN-6590-1: Xerces-C++ vulnerabilities

It was discovered that Xerces-C++ was not properly handling memory management operations when parsing XML data containing external DTDs, which could trigger a use-after-free error. If a user or automated system were tricked into processing a specially crafted XML document, an attacker could...

USN-6585-1: libssh2 vulnerability

Fabian Bäumer, Marcus Brinkmann, Jörg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being...

USN-6517-1: Perl vulnerabilities

It was discovered that Perl incorrectly handled printing certain warning messages. An attacker could possibly use this issue to cause Perl to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS. CVE-2022-48522 Nathan Mills discovered that Perl incorrectly...

USN-6500-1: Squid vulnerabilities

Joshua Rogers discovered that Squid incorrectly handled validating certain SSL certificates. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 23.04, and Ubuntu 23.10. CVE-2023-46724 Joshua...

USN-6497-1: Linux kernel (OEM) vulnerabilities

Maxim Levitsky discovered that the KVM nested virtualization SVM implementation for AMD processors in the Linux kernel did not properly handle x2AVIC MSRs. An attacker in a guest VM could use this to cause a denial of service host kernel crash. CVE-2023-5090 Alon Zahavi discovered that the...

USN-6454-1: Linux kernel vulnerabilities

Kyle Zeng discovered that the netfilter subsystem in the Linux kernel contained a race condition in IP set operations in certain situations. A local attacker could use this to cause a denial of service system crash. CVE-2023-42756 Alex Birnberg discovered that the netfilter subsystem in the Linux...

USN-6440-3: Linux kernel (HWE) vulnerabilities

Seth Jenkins discovered that the Linux kernel did not properly perform address randomization for a per-cpu memory management structure. A local attacker could use this to expose sensitive information kernel memory or in conjunction with another kernel vulnerability. CVE-2023-0597 It was discovere...

USN-6414-2: Django vulnerabilities

USN-6414-1 and USN-6378-1 fixed CVE-2023-43665 and CVE-2023-41164 in Django, respectively. This update provides the corresponding update for Ubuntu 18.04 LTS. Original advisory details: Wenchao Li discovered that the Django Truncator function incorrectly handled very long HTML input. A remote...

USN-6384-1: Linux kernel (OEM) vulnerabilities

Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. CVE-2023-20588 Lonial Con discover...

USN-6369-1: libwebp vulnerability

It was discovered that libwebp incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image file, a remote attacker could use this issue to cause libwebp to crash, resulting in a denial of service, or possibly execute arbitrary co...

USN-6237-2: curl regression

USN-6237-1 fixed vulnerabilities in curl. The update caused a certificate wildcard handling regression on Ubuntu 22.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Hiroki Kurosawa discovered that curl incorrectly handled validating certain...

USN-6187-1: Linux kernel (IBM) vulnerabilities

William Zhao discovered that the Traffic Control TC subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service kernel deadlock. CVE-2022-4269 It was discovered that the TUN/TAP driver in t...

USN-6175-1: Linux kernel vulnerabilities

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrar...

USN-6118-1: Linux kernel (Oracle) vulnerabilities

Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service system crash. CVE-2022-3707 Jordy Zomer and Alexandra Sandulescu discover...

USN-6111-1: Flask vulnerability

It was discovered that Flask incorrectly handled certain data responses. An attacker could possibly use this issue to expose sensitive information...

USN-6085-1: Linux kernel (Raspberry Pi) vulnerabilities

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. CVE-2022-27672 Zheng Wang discovered that the Intel i915 graphics...

USN-5964-2: curl vulnerabilities

USN-5964-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Harry Sintonen discovered that curl incorrectly handled certain TELNET connection options. Due to lack of proper input scrubbing,...

USN-5931-1: Python vulnerability

It was discovered that Python incorrectly handled certain inputs. If a user or an automated system were tricked into running a specially crafted input, a remote attacker could possibly use this issue to execute arbitrary code. CVE-2022-37454...

USN-5889-1: ZoneMinder vulnerabilities

It was discovered that ZoneMinder was not properly sanitizing URL parameters for certain views. An attacker could possibly use this issue to perform a cross-site scripting XSS attack. This issue was only fixed in Ubuntu 16.04 ESM. CVE-2019-6777 It was discovered that ZoneMinder was not properly...

USN-5827-1: Bind vulnerabilities

Rob Schulhof discovered that Bind incorrectly handled a large number of UPDATE messages. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. CVE-2022-3094 Borja Marcos discovered that Bind incorrectly handled certain RRSIG queries....

USN-5756-1: Linux kernel vulnerabilities

Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2022-427...

USN-5736-1: ImageMagick vulnerabilities

It was discovered that ImageMagick incorrectly handled certain values when processing PDF files. If a user or automated system using ImageMagick were tricked into opening a specially crafted PDF file, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 14....