Mehrere Probleme in Linux
ID: | USN-4425-1 |
Distribution: | Ubuntu |
Plattformen: | Ubuntu 18.04 LTS, Ubuntu 20.04 LTS |
Datum: | Mi, 22. Juli 2020, 07:52 |
Referenzen: | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15780
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19462 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16089 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11935 |
Applikationen: | Linux |
Originalnachricht |
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--===============1761226063577987291== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2oS5YaxWCcQjTEyO" Content-Disposition: inline --2oS5YaxWCcQjTEyO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline ========================================================================== Ubuntu Security Notice USN-4425-1 July 21, 2020 linux, linux-aws, linux-gcp, linux-hwe-5.4, linux-kvm, linux-oracle, linux-raspi-5.4, linux-riscv vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-riscv: Linux kernel for RISC-V systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-raspi-5.4: Linux kernel for Raspberry Pi (V8) systems Details: It was discovered that the network block device (nbd) implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-16089) It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19462) Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service. (CVE-2020-11935) Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading ACPI tables via configfs. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. (CVE-2020-15780) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1020-aws 5.4.0-1020.20 linux-image-5.4.0-1021-gcp 5.4.0-1021.21 linux-image-5.4.0-1021-oracle 5.4.0-1021.21 linux-image-5.4.0-30-generic 5.4.0-30.34 linux-image-5.4.0-42-generic 5.4.0-42.46 linux-image-5.4.0-42-generic-lpae 5.4.0-42.46 linux-image-5.4.0-42-lowlatency 5.4.0-42.46 linux-image-aws 5.4.0.1020.21 linux-image-gcp 5.4.0.1021.19 linux-image-generic 5.4.0.30.37 linux-image-generic-lpae 5.4.0.42.45 linux-image-gke 5.4.0.1021.19 linux-image-kvm 5.4.0.1020.19 linux-image-lowlatency 5.4.0.42.45 linux-image-oem 5.4.0.42.45 linux-image-oem-osp1 5.4.0.42.45 linux-image-oracle 5.4.0.1021.19 linux-image-virtual 5.4.0.30.37 Ubuntu 18.04 LTS: linux-image-5.4.0-1015-raspi 5.4.0-1015.15~18.04.1 linux-image-5.4.0-42-generic 5.4.0-42.46~18.04.1 linux-image-5.4.0-42-generic-lpae 5.4.0-42.46~18.04.1 linux-image-5.4.0-42-lowlatency 5.4.0-42.46~18.04.1 linux-image-generic-hwe-18.04 5.4.0.42.46~18.04.35 linux-image-generic-lpae-hwe-18.04 5.4.0.42.46~18.04.35 linux-image-gkeop-5.4 5.4.0.42.46~18.04.35 linux-image-lowlatency-hwe-18.04 5.4.0.42.46~18.04.35 linux-image-raspi-hwe-18.04 5.4.0.1015.19 linux-image-snapdragon-hwe-18.04 5.4.0.42.46~18.04.35 linux-image-virtual-hwe-18.04 5.4.0.42.46~18.04.35 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://usn.ubuntu.com/4425-1 CVE-2019-16089, CVE-2019-19462, CVE-2020-11935, CVE-2020-15780 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-42.46 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1020.20 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1021.21 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1020.20 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1021.21 https://launchpad.net/ubuntu/+source/linux-riscv/5.4.0-30.34 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-42.46~18.04.1 https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1015.15~18.04.1 --2oS5YaxWCcQjTEyO Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAl8XxEMACgkQLwmejQBe gfQeqg//ZKzXrxVzkm3QTEesUmeGvX78gSsyhiW+WgexzrWnPTaOeiXde+zkEvcg 6+Na98Pw5jTXFJAa2fk1qjGFp+Uv5tPJ+5y/3+27aWA0i/WrbZI0RIauHKxLOKkP 9lGj6joyeBrlrJEqFY/yqHNAp44mR6VahcfMjgHNyX0xzn1VZ7zwjahwSvhzjhFe fQjQxs73wlgvYEps476ztXhFgvlwNSHyOhT9FLHBJ3qdSeLeIRbYWpLkKTEYnySa nU7n1ntDp+RBVU1c0O5RK4j6vGw8m+iUcnll51w0FxrvpwUOn3h1+mbTTPN1n+RQ jKQj8qdSM+FkWvt6mmwNzOD7AmuZtLhR36WMxFT5mNofQC3ksT5KvdbygwS3MyVR //NW20eO5uH9oDU7pIQh/0tX0FOOljpxJJCuoxe73xkO+b1jpjeVvISHpl7bs4gb QvXEZ+y5hu3BXZauoxtxEoE4JcZ66wQFY78HGd7ccUGxY7qyk9TUVp3AGpTy334q BxmJLRJkkU4Red53PPDMYuAIULPX3s+UnoLAEKHQ3q1M7q0vGm6ogFlnopeZncqz 6Z1bxZ20fJOvgolM9+BbAwFtAAOcX6ass0eHW61AwdXS7GSgaDjI9kYqYq2YOcEq N0U0pNF9uQN4SiK2Z60Bpiv/uMSu8TnDDCMwLg/0pIAEOyYYbJ4= =Z5Ug -----END PGP SIGNATURE----- --2oS5YaxWCcQjTEyO-- --===============1761226063577987291== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce |