Gentoo Linux Security Advisory 202208-27 - Multiple vulnerabilities have been discovered in QEMU, the worst of which could result in remote code execution (guest sandbox escape). Versions less than 7.0.0 are affected.
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Debian Linux Security Advisory 4980-1 - Multiple security issues were discovered in QEMU, a fast processor emulator, which could result in denial of service or the the execution of arbitrary code.
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Various Lexmark Universal Printer drivers as listed at advisory TE953 allow low-privileged authenticated users to elevate their privileges to SYSTEM on affected Windows systems by modifying the XML file at C:\ProgramData\<driver name>\Universal Color Laser.gdl to replace the DLL path to unires.dll with a malicious DLL path. When C:\Windows\System32\Printing_Admin_Scripts\en-US\prnmngr.vbs is then used to add the printer to the affected system, PrintIsolationHost.exe, a Windows process running as NT AUTHORITY\SYSTEM, will inspect the C:\ProgramData\<driver name>\Universal Color Laser.gdl file and will load the malicious DLL from the path specified in the file. This which will result in the malicious DLL executing as NT AUTHORITY\SYSTEM. Once this module is finished, it will use the prnmngr.vbs script to remove the printer it added.
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Ubuntu Security Notice 5010-1 - Lei Sun discovered that QEMU incorrectly handled certain MMIO operations. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.04. Various other issues were also addressed.
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