Ubuntu Security Notice 6567-2 - USN-6567-1 fixed vulnerabilities QEMU. The fix for CVE-2023-2861 was too restrictive and introduced a behavior change leading to a regression in certain environments. This update fixes the problem. Gaoning Pan and Xingwei Li discovered that QEMU incorrectly handled the USB xHCI controller device. A privileged guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. Various other issues were also addressed.
a54d7bc90f81ef99a51f6873f6c189be32af415ca78c88b11fc2bd3df9e91a3bUbuntu Security Notice 6567-1 - Gaoning Pan and Xingwei Li discovered that QEMU incorrectly handled the USB xHCI controller device. A privileged guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. It was discovered that QEMU incorrectly handled the TCG Accelerator. A local attacker could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code and escalate privileges. This issue only affected Ubuntu 20.04 LTS.
822fd59a00f432568a1ff02767caa245fcfcf6843527f21aad32e7fa00321108Ubuntu Security Notice 6436-1 - It was discovered that the FRR did not properly check the attribute length in NRLI. A remote attacker could possibly use this issue to cause a denial of service. It was discovered that the FRR did not properly manage memory when reading initial bytes of ORF header. A remote attacker could possibly use this issue to cause a denial of service. It was discovered that FRR did not properly validate the attributes in the BGP FlowSpec functionality. A remote attacker could possibly use this issue to cause a denial of service.
c54a218c23f3c4877ce2417fa1371aa63e38b89f4e9376e5a83bc1c582484309Ubuntu Security Notice 6432-1 - It was discovered that the Quagga BGP daemon did not properly check the attribute length in NRLI. A remote attacker could possibly use this issue to cause a denial of service. It was discovered that the Quagga BGP daemon did not properly manage memory when reading initial bytes of ORF header. A remote attacker could possibly use this issue to cause a denial of service.
83ab0aa9332b74bfb15adf2f2e832ac211abc89c5493ef410be7aed9a5efe908Debian Linux Security Advisory 5495-1 - Multiple vulnerabilities were discovered in frr, the FRRouting suite of internet protocols, while processing malformed requests and packets the BGP daemon may have reachable assertions, NULL pointer dereference, out-of-bounds memory access, which may lead to denial of service attack.
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