https://ubuntu.com/security/notices/rss.xmlRecent content on Ubuntu security notices2026 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd.http://www.rssboard.org/rss-specificationFeedgenWed, 22 Jul 2026 23:15:10 +0000https://ubuntu.com/security/notices/USN-8590-1It was discovered that Exim incorrectly handled certain command line options. A local attacker could possibly use this issue to access files outside of the spool area. It was discovered that Exim incorrectly handled string expansion in .local files. A local attacker could possibly use this issue to escalate privileges.https://ubuntu.com/security/notices/USN-8590-1Wed, 22 Jul 2026 16:57:48 +0000https://ubuntu.com/security/notices/USN-8589-1It was discovered that Apache HTTP Server's mod_ldap module incorrectly handled memory when processing per-directory configurations. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-29167) It was discovered that Apache HTTP Server's mod_proxy_ftp module incorrectly handled HTML generation for FTP directory listings. A remote attacker could possibly use this issue to inject arbitrary web script or HTML. (CVE-2026-29170) Nitescu Lucian discovered that Apache HTTP Server's mod_auth_digest module was vulnerable to a timing attack. A remote attacker could possibly use this issue to bypass Digest authentication. (CVE-2026-33006)https://ubuntu.com/security/notices/USN-8589-1Wed, 22 Jul 2026 16:41:46 +0000https://ubuntu.com/security/notices/USN-8588-1It was discovered that Gawk incorrectly handled memory when processing input using the getline redirection. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-40467) It was discovered that Gawk incorrectly handled certain integer calculations when allocating memory. An attacker could possibly use this issue to cause a denial of service or overwrite heap memory with attacker-controlled data. (CVE-2026-40468) It was discovered that Gawk incorrectly handled certain integer calculations when performing substitutions. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-40469) It was discovered that Gawk incorrectly handled memory when reading directory entries. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-40553)https://ubuntu.com/security/notices/USN-8588-1Wed, 22 Jul 2026 16:29:49 +0000https://ubuntu.com/security/notices/USN-8477-3USN-8477-1 fixed a vulnerability in tar. That fix was incomplete and could cause tar to fail to extract old archives that recorded a nonzero size for directory entries, resulting in a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that tar incorrectly handled certain crafted archive files. An attacker could possibly use this to inject hidden files with attacker-controlled content, bypassing pre-extraction inspection mechanisms.https://ubuntu.com/security/notices/USN-8477-3Wed, 22 Jul 2026 15:03:31 +0000https://ubuntu.com/security/notices/USN-8587-1It was discovered that HTML-Parser incorrectly handled entity references when the input string was identical to an entity value in the lookup table. An attacker could possibly use this issue to obtain sensitive information.https://ubuntu.com/security/notices/USN-8587-1Wed, 22 Jul 2026 13:18:12 +0000https://ubuntu.com/security/notices/USN-8586-1It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing EOS image format data. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40333) It was discovered that libgphoto2 did not properly null-terminate buffers when parsing Canon folder entries. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40334) It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing device property values. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40335) It was discovered that libgphoto2 had a memory leak when parsing Sony device property descriptors. An attacker with physical access could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-40336) It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing Sony device property enumeration data. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40338) It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing Sony device property form flags. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40339) It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing object information. An attacker with physical access could possibly use this issue to obtain sensitive information. (CVE-2026-40340) It was discovered that libgphoto2 did not properly validate buffer boundaries when parsing EOS focus information. An attacker with physical access could possibly use this issue to cause libgphoto2 to crash, resulting in a denial of service. (CVE-2026-40341)https://ubuntu.com/security/notices/USN-8586-1Wed, 22 Jul 2026 13:11:45 +0000https://ubuntu.com/security/notices/USN-8585-1It was discovered that Kerberos had an integer underflow vulnerability in the berval2tl_data() function. An attacker could possibly use this issue to cause Kerberos to crash, resulting in a denial of service. (CVE-2026-11850) It was discovered that Kerberos had vulnerabilities in its NegoEx mechanism parsing. A remote attacker could possibly use these issues to cause Kerberos to crash, resulting in a denial of service. (CVE-2026-40355, CVE-2026-40356)https://ubuntu.com/security/notices/USN-8585-1Wed, 22 Jul 2026 13:04:35 +0000https://ubuntu.com/security/notices/USN-8584-1It was discovered that GStreamer Good Plugins incorrectly handled certain Matroska files. An attacker could possibly use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-39043) It was discovered that GStreamer Good Plugins incorrectly handled certain WAV files. An attacker could possibly use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-39044) It was discovered that GStreamer Good Plugins incorrectly handled certain WavPack audio files. An attacker could use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-53705)https://ubuntu.com/security/notices/USN-8584-1Wed, 22 Jul 2026 12:52:28 +0000https://ubuntu.com/security/notices/USN-8583-1It was discovered that GIFLIB incorrectly handled certain GIF image files. If a user or automated system were tricked into opening a specially crafted GIF file, a remote attacker could use this issue to cause GIFLIB to crash, resulting in a denial of service, or possibly execute arbitrary code.https://ubuntu.com/security/notices/USN-8583-1Wed, 22 Jul 2026 12:42:04 +0000https://ubuntu.com/security/notices/USN-8580-2USN-8580-1 fixed vulnerabilities in AccountsService. This update provides the corresponding fixes for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that the Ubuntu-specific SetLanguage patch to AccountsService incorrectly handled dropping privileges. A local attacker could use this issue to execute arbitrary commands as an administrator. (CVE-2026-61897) It was discovered that the Ubuntu-specific SetLanguage helpers for AccountsService incorrectly handled parsing configuration files. A local attacker could use this issue to execute arbitrary commands. (CVE-2026-61898) https://ubuntu.com/security/notices/USN-8580-2Tue, 21 Jul 2026 19:23:41 +0000