Aggregator

xen-4.21.2-2.fc44

Fedora Security Advisories
4 days ago
FEDORA-2026-1d448c1d40 Packages in this update:
  • xen-4.21.2-2.fc44
Update description:

x86: DMs may cause mem leak by IRQ binding [XSA-509, CVE-2026-62437] x86: improper handling of HVM emulation return codes [XSA-510, CVE-2026-79602] Unconditionally do TLB flushing ahead of page scrubbing [XSA-511, CVE-2026-79603] oxenstored: Unbounded accumulation of watches [XSA-512, CVE-2026-79604]

USN-8776-1: python-cryptography vulnerabilities

Ubuntu Security Advisories
4 days 1 hour ago
It was discovered that python-cryptography incorrectly accepted objects with immutable buffers when performing certain cipher operations. This would result in corrupted output, contrary to expectations. This issue only affected Ubuntu 18.04 LTS. (CVE-2023-23931) It was discovered that python-cryptography reported the outcome of decrypting PKCS#7 enveloped data in distinguishable ways, and with observable timing differences. A remote attacker could possibly use this issue to recover the key used to encrypt the message contents, and obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-69247) Jack Lloyd discovered that python-cryptography incorrectly handled wildcard DNS names when enforcing the name constraints of a certificate authority. A remote attacker could possibly use this issue to have an invalid certificate chain accepted, and use names outside of the permitted ones. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-69248) Samuel Judson discovered that python-cryptography incorrectly handled certificate chains that contained duplicate certificates. A remote attacker could possibly use this issue to cause python-cryptography to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-69249)

USN-8774-1: libheif vulnerabilities

Ubuntu Security Advisories
4 days 5 hours ago
Ali Firas discovered that libheif incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-62291) Dmitrijs Trizna discovered that libheif incorrectly handled certain image sequences. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-62377)

USN-8736-2: Perl vulnerabilities

Ubuntu Security Advisories
4 days 7 hours ago
USN-8736-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 24.04 LTS. Original advisory details: It was discovered that Perl incorrectly handled certain large inputs during regular expression matching. An attacker could possibly use this issue to trigger out-of-bounds heap reads or writes, resulting in a denial of service or arbitrary code execution. (CVE-2026-15534) It was discovered that Perl incorrectly handled certain regular expression containing alternative matching branches. An attacker could possibly use this issue to cause incorrect regular expression matches, resulting in security restrictions being bypassed. (CVE-2026-19487)