Ubuntu Security Notice USN-5605-1 ≈ Packet Storm

Roger Wilco Alertes 9 septembre 2022 Affichages : 249

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Ubuntu Security Notice USN-5605-1^[6]: Authored by Ubuntu ^[7] | Site security.ubuntu.com ^[8]; Ubuntu Security Notice 5605-1 - Asaf Modelevsky discovered that the Intel 10GbE PCI Express Ethernet driver for the Linux kernel performed insufficient control flow management. A local attacker could possibly use this to cause a denial of service. It was discovered that the virtual terminal driver in the Linux kernel did not properly handle VGA console font changes, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.; systems | linux ^[9], ubuntu ^[10]; advisories | CVE-2021-33061 ^[11], CVE-2021-33656 ^[12]; SHA-256 | 90229ee7d360ca1032c3774eb7541dd265334f14d1b68b0af1fdde07e84033cb; Download ^[13] | Favorite ^[14] | View ^[15]

        ==========================================================================
Ubuntu Security Notice USN-5605-1
September 09, 2022
linux-azure-fde vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems
Details:
Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe)
Ethernet driver for the Linux kernel performed insufficient control flow
management. A local attacker could possibly use this to cause a denial 
of service. (CVE-2021-33061)
It was discovered that the virtual terminal driver in the Linux kernel 
did not properly handle VGA console font changes, leading to an 
out-of-bounds write. A local attacker could use this to cause a denial 
of service (system crash) or possibly execute arbitrary code. 
(CVE-2021-33656)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1090-azure-fde  5.4.0-1090.95+cvm1.1
linux-image-azure-fde           5.4.0.1090.95+cvm1.30
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall 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 perform
this as well.
References:
https://ubuntu.com/security/notices/USN-5605-1
CVE-2021-33061, CVE-2021-33656
Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-fde/5.4.0-1090.95+cvm1.1