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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------JSTPuyqq54ZxmD9uIdXOOK7c Content-Type: multipart/mixed; boundary="------------YsJzJLsNWRSU55mx5B2ThfFa"; protected-headers="v1" From: Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com> Reply-To: security@ubuntu.com To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <ed39a3a0-59f5-410f-9073-14a3259de070@canonical.com> Subject: [USN-6701-3] Linux kernel vulnerabilities
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========================================================================== Ubuntu Security Notice USN-6701-3 March 25, 2024
linux-aws-hwe, linux-azure, linux-azure-4.15, linux-oracle vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS (Available with Ubuntu Pro) - Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-oracle: Linux kernel for Oracle Cloud systems
Details:
Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)
It was discovered that the NVIDIA Tegra XUSB pad controller driver in the Linux kernel did not properly handle return values in certain error conditions. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-23000)
It was discovered that Spectre-BHB mitigations were missing for Ampere processors. A local attacker could potentially use this to expose sensitive information. (CVE-2023-3006)
It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle block device modification while it is mounted. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-34256)
Eric Dumazet discovered that the netfilter subsystem in the Linux kernel did not properly handle DCCP conntrack buffers in certain situations, leading to an out-of-bounds read vulnerability. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2023-39197)
It was discovered that the Siano USB MDTV receiver device driver in the Linux kernel did not properly handle device initialization failures in certain situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this cause a denial of service (system crash). (CVE-2023-4132)
Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838)
It was discovered that a race condition existed in the AppleTalk networking subsystem of 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-2023-51781)
Alon Zahavi discovered that the NVMe-oF/TCP subsystem of the Linux kernel did not properly handle connect command payloads in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to expose sensitive information (kernel memory). (CVE-2023-6121)
It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle the remount operation in certain cases, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2024-0775)
Notselwyn discovered that the netfilter subsystem in the Linux kernel did not properly handle verdict parameters in certain cases, 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-2024-1086)
It was discovered that a race condition existed in the SCSI Emulex LightPulse Fibre Channel driver in the Linux kernel when unregistering FCF and re-scanning an HBA FCF table, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2024-24855)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-4.15.0-1175-azure 4.15.0-1175.190 linux-image-azure-lts-18.04 4.15.0.1175.143
Ubuntu 16.04 LTS (Available with Ubuntu Pro): linux-image-4.15.0-1129-oracle 4.15.0-1129.140~16.04.1 linux-image-4.15.0-1166-aws 4.15.0-1166.179~16.04.1 linux-image-4.15.0-1175-azure 4.15.0-1175.190~16.04.1 linux-image-aws-hwe 4.15.0.1166.149 linux-image-azure 4.15.0.1175.159 linux-image-oracle 4.15.0.1129.110
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-6701-3 https://ubuntu.com/security/notices/USN-6701-1 CVE-2023-2002, CVE-2023-23000, CVE-2023-3006, CVE-2023-34256, CVE-2023-39197, CVE-2023-4132, CVE-2023-46838, CVE-2023-51781, CVE-2023-6121, CVE-2024-0775, CVE-2024-1086, CVE-2024-24855
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