Linux kernel vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 24.04 LTS - Ubuntu 16.04 LTS - Ubuntu 22.04 LTS - Ubuntu 14.04 LTS Summary Several security issues were fixed in the kernel. Software Description - linux - Linux kernel - linux-aws - Linux kernel for Amazon Web Services (AWS) systems - linux-azure - Linux kernel for Microsoft Azure Cloud systems - linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems - linux-gke - Linux kernel for Google Container Engine (GKE) systems - linux-gkeop - Linux kernel for Google Container Engine (GKE) systems - linux-ibm - Linux kernel for IBM cloud systems - linux-oracle - Linux kernel for Oracle Cloud systems Details In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in async decryption Doing an async decryption (large read) crashes with a slab-use-after-free way down in the crypto API. (CVE-2024-50047) In the Linux kernel, the following vulnerability has been resolved: ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit After an insertion in TNC, the tree might split and cause a node to change its znode->parent. (CVE-2024-53171) In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix usage slab after free (CVE-2024-56551) In the Linux kernel, the following vulnerability has been resolved: jfs: fix array-index-out-of-bounds in jfs_readdir The stbl might contain some invalid values. (CVE-2024-56596) In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds access in ‘dcn21_link_encoder_create’ An issue was identified in the dcn21_link_encoder_create function where an out-of-bounds access could occur when the hpd_source index was used to reference the link_enc_hpd_regs array. (CVE-2024-56608) In the Linux kernel, the following vulnerability has been resolved: jffs2: Prevent rtime decompress memory corruption The rtime decompression routine does not fully check bounds during the entirety of the decompression pass and can corrupt memory outside the decompression buffer if the compressed data is corrupted. (CVE-2024-57850) Update instructions The problem can be corrected by updating your kernel livepatch to the following versions: Ubuntu 20.04 LTS aws - 113.1 azure - 113.1 gcp - 113.1 generic - 113.1 gkeop - 113.1 ibm - 113.1 lowlatency - 113.1 oracle - 113.1 Ubuntu 18.04 LTS aws - 113.1 azure - 113.1 gcp - 113.1 generic - 113.1 lowlatency - 113.1 oracle - 113.1 Ubuntu 24.04 LTS aws - 113.1 azure - 113.1 gcp - 113.1 generic - 113.1 ibm - 113.1 oracle - 113.1 Ubuntu 16.04 LTS aws - 113.1 azure - 113.1 gcp - 113.1 generic - 113.1 lowlatency - 113.1 Ubuntu 22.04 LTS aws - 113.1 azure - 113.1 gcp - 113.1 generic - 113.1 gke - 113.1 ibm - 113.1 oracle - 113.1 Ubuntu 14.04 LTS generic - 113.1 lowlatency - 113.1 Support Information Livepatches for supported LTS kernels will receive upgrades for a period of up to 13 months after the build date of the kernel. Livepatches for supported HWE kernels which are not based on an LTS kernel version will receive upgrades for a period of up to 9 months after the build date of the kernel, or until the end of support for that kernel’s non-LTS distro release version, whichever is sooner. References - CVE-2024-50047 - CVE-2024-53171 - CVE-2024-56551 - CVE-2024-56596 - CVE-2024-56608 - CVE-2024-57850