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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.0918 LSN-0091-1: Kernel Live Patch Security Notice 16 February 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Kernel Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2022-42719 CVE-2022-41222 Original Bulletin: https://ubuntu.com/security/notices/LSN-0091-1 Comment: CVSS (Max): 8.8 CVE-2022-42719 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: NVD Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- LSN-0091-1: Kernel Live Patch Security Notice 14 February 2023 Several security issues were fixed in the kernel. Releases o Ubuntu 22.04 LTS o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Software Description o aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1009, >= 5.4.0-1061, >= 5.15.0-1000) o aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1069) o azure - Linux kernel for Microsoft Azure Cloud systems - (>= 5.4.0-1010, >= 5.15.0-1000) o azure-5.4 - Linux kernel for Microsoft Azure cloud systems - (>= 5.4.0-1069) o gcp - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1009, >= 5.15.0-1000) o gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1069) o generic-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26) o gke - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1033, >= 5.15.0-1000) o gke-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009) o gkeop - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009) o gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1007) o ibm - Linux kernel for IBM cloud systems - (>= 5.4.0-1009, >= 5.15.0-1000) o ibm-5.4 - Linux kernel for IBM cloud systems - (>= 5.4.0-1009) o linux - Linux kernel - (>= 5.15.0-24) o lowlatency-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26) Details It was discovered that a race condition existed in the memory address space accounting implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.( CVE-2022-41222 ) Sonke Huster discovered that a use-after-free vulnerability existed in the WiFi driver stack in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.( CVE-2022-42719 ) Checking update status The problem can be corrected in these Livepatch versions: Kernel type 22.04 20.04 18.04 aws 91.1 91.1 - aws-5.4 - - 91.1 azure 91.1 91.1 - azure-5.4 - - 91.1 gcp 91.1 91.1 - gcp-5.4 - - 91.1 generic-5.4 - 91.1 91.1 gke 91.1 91.1 - gke-5.4 - - 91.1 gkeop - 91.1 - gkeop-5.4 - - 91.1 ibm 91.1 91.1 - ibm-5.4 - - 91.1 linux 91.1 - - lowlatency-5.4 - 91.1 91.1 To check your kernel type and Livepatch version, enter this command: canonical-livepatch status References o CVE-2022-42719 o CVE-2022-41222 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBY+2I3ckNZI30y1K9AQiM8hAAokskNv+B6aCUOtUcNwZPEDn7fL9lYbwz GLUDLhDNNIkL/eGegMpvBpFr6FRH/2Ugt0rtBbUKw4WFSHbv/WOlf+vDj9lk6HSd CoMNIIKYXWrWWK0yV+eKp9JYsAXdEZFbYVcf6wkOHnosduLjN+c4h2nmuOnJ/Fiy BxCBYkoUy3g8STE8/8QuC4Tlfkl7rWdyEdFXxVBc+4wfHCxJhOBink+pU3rhSEzb 7q50UcViOCxpwGAaOMGJ9iao2QJL7d7/Ip2l57lIqWInCbvJnI7JCCFK4knDnd+a Ut9o9Zm01vqmzEQNdRT9oMvPpyWj+GWuMhU6fgnHp9DoNGb6/VbidDmYYKnVwMXZ Zd97zHnis2mAMP+N6wWVD2Hh9BHZks5k5GSpXCGQiB3cKfG7XLIumv6mkhsil+4w GI96Bod01PKS1wMn8a4qwYHUMKivIcAUnTsTwJsjLFAbS6D7ZHenwyL4TylCSKXN AmTj3ZIU8AloSSeXOriKWAw6rapUnFsi2tlgv4W6hExDzXsj6IPQpgRp/ZMq3FGr f/t6NJu0isMEPrTcNJtxEvp+r23jq4uFHeIUjfCwdL7lasT865Y6EfwbMaB2x3g7 kOMPGn398Cx2oCUiPHd3/StdfLLry0NQNe1KukA4mpyomTnSDr+vWOQ+II4ArV93 C3zT6GoIgdA= =WTSN -----END PGP SIGNATURE-----