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, 10 Jun 2026 21:12:19 +0000https://ubuntu.com/security/notices/USN-8419-1It was discovered that HTTP-Daemon incorrectly handled untrusted input under certain circumstances. A remote attacker could possibly use this issue to execute arbitrary commands, create or overwrite arbitrary files, or expose sensitive information.https://ubuntu.com/security/notices/USN-8419-1Wed, 10 Jun 2026 13:49:41 +0000https://ubuntu.com/security/notices/USN-6455-2USN-6455-1 fixed vulnerabilities in Exim. The fix for CVE-2023-42117 introduced a regression on Ubuntu 22.04 LTS that resulted in certain connections logging a Taint mismatch error. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Exim incorrectly handled validation of user-supplied data, which could lead to memory corruption. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2023-42117) It was discovered that Exim incorrectly handled validation of user-supplied data, which could lead to an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. (CVE-2023-42119) https://ubuntu.com/security/notices/USN-6455-2Wed, 10 Jun 2026 12:22:10 +0000https://ubuntu.com/security/notices/USN-8130-3USN-8130-1 fixed a vulnerability in GStreamer Base Plugins. This update provides the corresponding update for Ubuntu 16.04 LTS. Original advisory details: It was discovered that GStreamer Base Plugins incorrectly handled certain AVI media files. A remote attacker could use this issue to cause GStreamer Base Plugins to crash, resulting in a denial of service, or possibly execute arbitrary code.https://ubuntu.com/security/notices/USN-8130-3Wed, 10 Jun 2026 11:30:13 +0000https://ubuntu.com/security/notices/USN-8417-1It was discovered that Tomcat did not properly limit the size of WebDAV LOCK and PROPFIND request bodies. A remote attacker could use this issue to cause Tomcat to consume excessive memory, resulting in a denial of service. (CVE-2026-41284) It was discovered that Tomcat incorrectly validated HTTP/2 header fields. A remote attacker could use this issue to cause Tomcat to crash or possibly execute arbitrary code. (CVE-2026-41293) It was discovered that Tomcat did not properly clear HTTP authentication headers during WebSocket connection upgrades and redirects. A remote attacker could use this issue to obtain sensitive credentials. (CVE-2026-42498) It was discovered that Tomcat incorrectly handled digest authentication. A remote attacker could possibly use this issue to bypass authentication restrictions. (CVE-2026-43512) It was discovered that Tomcat incorrectly handled case sensitivity in LockOutRealm. A remote attacker could possibly use this issue to bypass account lockout protections and obtain sensitive information. (CVE-2026-43513) It was discovered that Tomcat incorrectly handled authorization when multiple method constraints defined the same HTTP method. A remote attacker could possibly use this issue to bypass authorization restrictions. (CVE-2026-43515)https://ubuntu.com/security/notices/USN-8417-1Wed, 10 Jun 2026 06:44:15 +0000https://ubuntu.com/security/notices/USN-8414-2USN-8414-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: Frank Buss discovered that OpenSSL had a heap buffer over-read in ASN.1 content parsing. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2026-34180) Asim Viladi Oglu Manizada and Alex Gaynor discovered that OpenSSL could accept forged CMS AuthEnvelopedData messages. An attacker could possibly use this issue to bypass message authentication checks. (CVE-2026-34182) Mayank Jangid, Kushal Khemka, Hari Priandana, Bhabani Sankar Das, and Qifan Zhang discovered that OpenSSL had a possible NULL dereference in password- based CMS decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-42766) Zhanpeng Liu, Guannan Wang, and Guancheng Li discovered that OpenSSL had a NULL pointer dereference in CRMF EncryptedValue decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-42767) Thai Duong discovered that OpenSSL had a heap use-after-free in PKCS7_verify(). An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-45447) Zehua Qiao and Jinwen He discovered that OpenSSL had a possible heap buffer overflow in ASN.1 multibyte string conversion. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-7383) Bhabani Sankar Das discovered that OpenSSL had an out-of-bounds read in CMS password-based decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-9076)https://ubuntu.com/security/notices/USN-8414-2Tue, 09 Jun 2026 18:29:37 +0000https://ubuntu.com/security/notices/USN-8416-1It was discovered that Go Networking incorrectly handled certain Punycode-encoded labels in the idna package. An attacker could possibly use this issue to bypass hostname-based access restrictions.https://ubuntu.com/security/notices/USN-8416-1Tue, 09 Jun 2026 18:01:10 +0000https://ubuntu.com/security/notices/USN-8415-1It was discovered that Vim incorrectly handled marked filenames in the netrw plugin. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-43961) It was discovered that Vim incorrectly handled filenames when decompressing certain archives. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-46483)https://ubuntu.com/security/notices/USN-8415-1Tue, 09 Jun 2026 17:28:10 +0000https://ubuntu.com/security/notices/USN-8414-1Frank Buss discovered that OpenSSL had a heap buffer over-read in ASN.1 content parsing. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2026-34180) Pavol Zacik and Alex Gaynor discovered that OpenSSL incorrectly accepted PKCS#12 files with short HMAC keys when using PBMAC1. An attacker could possibly use this issue to bypass integrity checks. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-34181) Asim Viladi Oglu Manizada and Alex Gaynor discovered that OpenSSL could accept forged CMS AuthEnvelopedData messages. An attacker could possibly use this issue to bypass message authentication checks. (CVE-2026-34182) Abhinav Agarwal discovered that OpenSSL had unbounded memory growth in the QUIC PATH_CHALLENGE handler. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-34183) Sunwoo Lee, Hyuk Lim, and Seunghyun Yoon discovered that OpenSSL had a NULL pointer dereference in QUIC server initial packet handling. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42764) Mayank Jangid, Kushal Khemka, Hari Priandana, Bhabani Sankar Das, and Qifan Zhang discovered that OpenSSL had a possible NULL dereference in password- based CMS decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-42766) Zhanpeng Liu, Guannan Wang, and Guancheng Li discovered that OpenSSL had a NULL pointer dereference in CRMF EncryptedValue decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-42767) Alex Gaynor discovered that OpenSSL had a Bleichenbacher oracle in CMS_decrypt() and PKCS7_decrypt() with multiple RecipientInfo values. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42768) Alex Gaynor discovered that OpenSSL had a trust-anchor substitution issue in CMP rootCaKeyUpdate processing. An attacker could possibly use this issue to bypass certificate trust validation. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42769) Alex Gaynor discovered that OpenSSL used attacker-supplied parameters when validating FFC-DH peers. An attacker could possibly use this issue to weaken key validation and compromise security guarantees. (CVE-2026-42770) Alex Gaynor discovered that OpenSSL could ignore the IV in AES-OCB mode on the EVP_Cipher() path. An attacker could possibly use this issue to bypass cryptographic protections and obtain sensitive information. (CVE-2026-45445) Alex Gaynor discovered that OpenSSL had incorrect tag processing for empty messages in AES-GCM-SIV and AES-SIV modes. An attacker could possibly use this issue to bypass cryptographic integrity checks. (CVE-2026-45446) Thai Duong discovered that OpenSSL had a heap use-after-free in PKCS7_verify(). An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-45447) Zehua Qiao and Jinwen He discovered that OpenSSL had a possible heap buffer overflow in ASN.1 multibyte string conversion. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-7383) Bhabani Sankar Das discovered that OpenSSL had an out-of-bounds read in CMS password-based decryption. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-9076)https://ubuntu.com/security/notices/USN-8414-1Tue, 09 Jun 2026 17:14:22 +0000https://ubuntu.com/security/notices/USN-8409-1It was discovered that uriparser incorrectly handled certain URI strings. An attacker could possibly use this issue to cause uriparser to crash, resulting in a denial of service.https://ubuntu.com/security/notices/USN-8409-1Tue, 09 Jun 2026 16:29:48 +0000https://ubuntu.com/security/notices/USN-8156-2USN-8156-1 fixed a vulnerability in GDK-PixBuf. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that GDK-PixBuf incorrectly handled certain JPEG files. An attacker could use this issue to cause GDK-PixBuf to crash, resulting in a denial of service, or possibly execute arbitrary code.https://ubuntu.com/security/notices/USN-8156-2Tue, 09 Jun 2026 16:27:37 +0000