Ubuntu Security Update USN-6954-1: QEMU vulnerabilities

[LinuxBot]

Markus Frank and Fiona Ebner discovered that QEMU did not properly handle certain memory operations, leading to a NULL pointer dereference. An authenticated user could potentially use this issue to cause a denial of service. (CVE-2023-6683) Xiao Lei discovered that QEMU did not properly handle certain memory operations when specific features were enabled, which could lead to a stack overflow. An attacker could potentially use this issue to leak sensitive information. (CVE-2023-6693) It was discovered that QEMU had an integer underflow vulnerability in the TI command, which would result in a buffer overflow. An attacker could potentially use this issue to cause a denial of service. (CVE-2024-24474)

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