Ubuntu alert USN-7796-1 (linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle)
| From: | Giampaolo Fresi Roglia <giampaolo.fresi.roglia@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-7796-1] Linux kernel vulnerabilities | |
| Date: | Thu, 02 Oct 2025 11:38:32 +0200 | |
| Message-ID: | <87qzvl1w4n.fsf@canonical.com> |
========================================================================== Ubuntu Security Notice USN-7796-1 October 02, 2025 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 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-azure-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel Details: Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Framebuffer layer; - BTRFS file system; - Ext4 file system; - Network file system (NFS) server daemon; - Packet sockets; - Network traffic control; - VMware vSockets driver; (CVE-2025-21796, CVE-2025-38477, CVE-2025-38617, CVE-2025-37785, CVE-2024-49924, CVE-2025-38618, CVE-2024-35849) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS linux-image-4.15.0-1147-oracle 4.15.0-1147.158 Available with Ubuntu Pro linux-image-4.15.0-1178-gcp 4.15.0-1178.195 Available with Ubuntu Pro linux-image-4.15.0-1185-aws 4.15.0-1185.198 Available with Ubuntu Pro linux-image-4.15.0-1193-azure 4.15.0-1193.208 Available with Ubuntu Pro linux-image-4.15.0-242-generic 4.15.0-242.254 Available with Ubuntu Pro linux-image-4.15.0-242-lowlatency 4.15.0-242.254 Available with Ubuntu Pro linux-image-aws-4.15 4.15.0.1185.183 Available with Ubuntu Pro linux-image-aws-lts-18.04 4.15.0.1185.183 Available with Ubuntu Pro linux-image-azure-4.15 4.15.0.1193.161 Available with Ubuntu Pro linux-image-azure-lts-18.04 4.15.0.1193.161 Available with Ubuntu Pro linux-image-gcp-4.15 4.15.0.1178.191 Available with Ubuntu Pro linux-image-gcp-lts-18.04 4.15.0.1178.191 Available with Ubuntu Pro linux-image-generic 4.15.0.242.226 Available with Ubuntu Pro linux-image-lowlatency 4.15.0.242.226 Available with Ubuntu Pro linux-image-oracle-4.15 4.15.0.1147.152 Available with Ubuntu Pro linux-image-oracle-lts-18.04 4.15.0.1147.152 Available with Ubuntu Pro linux-image-virtual 4.15.0.242.226 Available with Ubuntu Pro Ubuntu 16.04 LTS linux-image-4.15.0-1178-gcp 4.15.0-1178.195~16.04.1 Available with Ubuntu Pro linux-image-4.15.0-1185-aws 4.15.0-1185.198~16.04.1 Available with Ubuntu Pro linux-image-4.15.0-1193-azure 4.15.0-1193.208~16.04.1 Available with Ubuntu Pro linux-image-4.15.0-242-generic 4.15.0-242.254~16.04.1 Available with Ubuntu Pro linux-image-4.15.0-242-lowlatency 4.15.0-242.254~16.04.1 Available with Ubuntu Pro linux-image-aws-hwe 4.15.0.1185.198~16.04.1 Available with Ubuntu Pro linux-image-azure 4.15.0.1193.208~16.04.1 Available with Ubuntu Pro linux-image-gcp 4.15.0.1178.195~16.04.1 Available with Ubuntu Pro linux-image-generic-hwe-16.04 4.15.0.242.254~16.04.1 Available with Ubuntu Pro linux-image-gke 4.15.0.1178.195~16.04.1 Available with Ubuntu Pro linux-image-lowlatency-hwe-16.04 4.15.0.242.254~16.04.1 Available with Ubuntu Pro linux-image-oem 4.15.0.242.254~16.04.1 Available with Ubuntu Pro linux-image-virtual-hwe-16.04 4.15.0.242.254~16.04.1 Available with Ubuntu Pro 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-7796-1 CVE-2024-35849, CVE-2024-49924, CVE-2025-21796, CVE-2025-37785, CVE-2025-38477, CVE-2025-38617, CVE-2025-38618
Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE----- iQHZBAEBCgBDFiEEBcMY+nwS2CY71sUWc4vdAqvdlsYFAmjeSBglHGdpYW1wYW9s by5mcmVzaS5yb2dsaWFAY2Fub25pY2FsLmNvbQAKCRBzi90Cq92Wxk8BDAC22M2T cFK61q1z9WUkCxtK+jLLDTCodrSZNs9dy2mnXsoia9wFoPnm+6mmhUKd16nQ4RH8 PEC9wQaJusqvWifU2A7iAOR5OszlI6sqOcgJpj5EfP7FZ3ZEds/v0+ZnUS5i27oV cYrDFSSHdjXBpVHpbXBlRc7SrT7yMO547aJ81TkHKbRbXLJUaZ2hX96JWDdrx8YR EBHYmbrG2HbxsPw8JYmeLxUTGiCNY6p+x7chRrbe2PFZMk/F+eTh7JIZFaB5NPlk oMufuZEvKNrAzQb1b1WsGbZ7aATNkKU/q6bb41LJeuskswigMdDqVQ9GUMXF0tkG YXzFQaEyi5bSUawu2DV39OKucLL+o9JTLuc/mGAF9/vRm4WG+89EbQtVFB21CKoo L+CU2ckoaN4HH7DBwSf1VUCnPooYqGKlG9LVYEIyQsdmPrk1R08UWfEELIA0x/ov crDmZGWkx922yEUPlK48cFBVmW4IZ3Mfr57JyOkfehiId7puB75S1bfqeHE= =wJSg -----END PGP SIGNATURE-----