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 19:32:58 +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-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 +0000https://ubuntu.com/security/notices/USN-8582-1Zeng Yunxiang and Song Jiaxuan discovered that jbig2dec had an out-of-bounds read vulnerability in its command-line tool. An attacker could possibly use this issue to cause jbig2dec to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2023-46361) It was discovered that jbig2dec had an integer overflow in the jbig2_arith_iaid_ctx_new() function. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-38076)https://ubuntu.com/security/notices/USN-8582-1Tue, 21 Jul 2026 17:41:35 +0000https://ubuntu.com/security/notices/USN-8581-1It was discovered that libarchive did not properly manage memory when unpacking certain RAR5 archives, leading to a double free. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-14164) It was discovered that libarchive did not properly validate certain tar archives, leading to a buffer overflow. A remote 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-2026-15028) It was discovered that libarchive did not properly validate certain malformed ACL entries. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-5745)https://ubuntu.com/security/notices/USN-8581-1Tue, 21 Jul 2026 17:34:42 +0000