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Ubuntu Security Notice USN-5517-1

Ubuntu Security Notice 5517-1 - It was discovered that the Atheros ath9k wireless device driver in the Linux kernel did not properly handle some error conditions, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the virtio RPMSG bus driver in the Linux kernel contained a double-free vulnerability in certain error conditions. A local attacker could possibly use this to cause a denial of service.

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=========================================================================Ubuntu Security Notice USN-5517-1July 13, 2022linux-oem-5.14 vulnerabilities=========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 20.04 LTSSummary:Several security issues were fixed in the Linux kernel.Software Description:- linux-oem-5.14: Linux kernel for OEM systemsDetails:It was discovered that the Atheros ath9k wireless device driver in theLinux kernel did not properly handle some error conditions, leading to ause-after-free vulnerability. A local attacker could use this to cause adenial of service (system crash) or possibly execute arbitrary code.(CVE-2022-1679)It was discovered that the virtio RPMSG bus driver in the Linux kernelcontained a double-free vulnerability in certain error conditions. A localattacker could possibly use this to cause a denial of service (systemcrash). (CVE-2022-34494)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 20.04 LTS:  linux-image-5.14.0-1045-oem     5.14.0-1045.51  linux-image-oem-20.04           5.14.0.1045.41  linux-image-oem-20.04b          5.14.0.1045.41  linux-image-oem-20.04c          5.14.0.1045.41  linux-image-oem-20.04d          5.14.0.1045.41After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall all third party kernel modules you might have installed.Unless you manually uninstalled the standard kernel metapackages(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,linux-powerpc), a standard system upgrade will automatically performthis as well.References:  https://ubuntu.com/security/notices/USN-5517-1  CVE-2022-1679, CVE-2022-34494Package Information:  https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1045.51

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Ubuntu Security Notice USN-5566-1

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Ubuntu Security Notice USN-5560-2

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Ubuntu Security Notice USN-5560-1

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Ubuntu Security Notice USN-5544-1

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Ubuntu Security Notice USN-5529-1

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CVE-2022-34494: rpmsg: virtio: Fix possible double free in rpmsg_virtio_add_ctrl_dev() · torvalds/linux@1680939

rpmsg_virtio_add_ctrl_dev in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a double free.

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A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local user to crash or potentially escalate their privileges on the system.

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