Aggregator

USN-8908-1: BlueZ vulnerabilities

Ubuntu Security Advisories
1 week 2 days ago
Michael Bommarito discovered that BlueZ incorrectly handled codec capability storage in the A2DP profile. An attacker could possibly use this issue to cause a stack buffer overflow, resulting in a denial of service or arbitrary code execution. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-19774) It was discovered that BlueZ incorrectly handled packet length validation. An attacker could possibly use this issue to read out of bounds memory, causing a crash or exposing sensitive information. (CVE-2026-75032) It was discovered that BlueZ incorrectly handled crafted XML input. An attacker could possibly use this issue to crash BlueZ, resulting in a denial of service. (CVE-2026-80185) It was discovered that BlueZ incorrectly parsed remote names from Extended Inquiry Response data. An attacker could possibly use this issue to cause a stack buffer overflow, resulting in a denial of service or arbitrary code execution. (CVE-2026-80186) Alexandro Calo discovered that BlueZ incorrectly parsed certain responses in the AVRCP profile. An attacker could possibly use this issue to access out of bounds memory, causing a crash or exposing sensitive information. (CVE-2026-85218)

USN-8910-1: libxml2 vulnerabilities

Ubuntu Security Advisories
1 week 2 days ago
Yirou Yang discovered that libxml2 incorrectly handled certain XML catalogs. If a user or automated system was tricked into processing a specially crafted XML catalog, an attacker could possibly use this issue to cause libxml2 to crash, resulting in a denial of service. (CVE-2026-76781) It was discovered that libxml2 incorrectly handled certain large qualified names, leading to a heap-based buffer overflow. An attacker could possibly use this issue to cause libxml2 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-86138) It was discovered that libxml2 incorrectly handled escaping certain large URI strings. An attacker could possibly use this issue to cause libxml2 to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-86139) Xudong Cao and Meng Xu discovered that libxml2 incorrectly handled certain large XPointer expressions, leading to a heap-based buffer overflow. An attacker could possibly use this issue to cause libxml2 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-86142) Xudong Cao and Meng Xu discovered that libxml2 did not check for integer overflows before passing output lengths to write callbacks. An attacker could possibly use this issue to cause an application using libxml2 to crash, resulting in a denial of service. (CVE-2026-86143) It was discovered that libxml2 did not apply parser options, such as disabling network access, when processing XInclude directives under certain circumstances. An attacker could possibly use this issue to perform XML external entity injection or server-side request forgery attacks, or cause a denial of service. (CVE-2026-86144)

USN-8909-1: libde265 vulnerability

Ubuntu Security Advisories
1 week 2 days ago
It was discovered that libde265 did not properly validate certain crafted H.265 bitstreams, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause libde265 to crash, resulting in a denial of service.

USN-8907-1: libgit2 vulnerability

Ubuntu Security Advisories
1 week 2 days ago
It was discovered that libgit2 incorrectly handled IP address SubjectAltName verification in TLS certificate validation. A remote attacker with a CA-trusted certificate could possibly use this issue to perform a machine-in-the-middle attack, leading to the exposure of sensitive information.

USN-8902-1: libarchive vulnerability

Ubuntu Security Advisories
1 week 2 days ago
It was discovered that libarchive had a signed integer overflow in its ZIP writer when handling encrypted entries with sizes near the maximum value. An attacker could possibly use this issue to cause libarchive to crash or execute arbitrary code.

USN-8895-1: Sudo vulnerability

Ubuntu Security Advisories
1 week 3 days ago
It was discovered that Sudo did not properly handle time-based access restrictions when sudoers rules used NOTBEFORE or NOTAFTER with timestamps omitting the trailing timezone indicator. A local attacker could possibly use this issue to execute commands outside the intended time window by manipulating the TZ environment variable.

xorg-x11-server-Xwayland-24.1.14-1.fc43

Fedora Security Advisories
1 week 3 days ago
FEDORA-2026-112c430ffc Packages in this update:
  • xorg-x11-server-Xwayland-24.1.14-1.fc43
Update description:

Update to xwayland 24.1.14 CVE fix for: CVE-2026-88812, CVE-2026-93515, CVE-2026-93516 CVE-2026-93517, CVE-2026-93518, CVE-2026-93519, CVE-2026-93520, CVE-2026-93521, CVE-2026-93522, CVE-2026-93523, CVE-2026-93524, CVE-2026-93536

USN-8894-1: poppler vulnerabilities

Ubuntu Security Advisories
1 week 3 days ago
It was discovered that Poppler had an integer overflow in FoFiTrueType::cvtSfnts. An attacker could possibly use this issue to cause Poppler to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-102620) It was discovered that Poppler had an integer overflow in SplashClip::clipToPath. An attacker could possibly use this issue to cause Poppler to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-102621) It was discovered that Poppler had a null pointer dereference in JBIG2Stream. An attacker could possibly use this issue to cause Poppler to crash, resulting in a denial of service. (CVE-2026-93312) It was discovered that Poppler had an integer overflow in JBIG2Stream::readCodeTableSeg. An attacker could possibly use this issue to cause Poppler to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-93313) It was discovered that Poppler had an integer overflow in FoFiTrueType::mapCodeToGID. An attacker could possibly use this issue to cause Poppler to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-93314)