USN-6388-1: Linux kernel vulnerabilities

First published: Tue Sep 19 2023(Updated: )

Daniel Moghimi discovered that some Intel(R) Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. (CVE-2022-40982) Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212) It was discovered that the NET/ROM protocol implementation in the Linux kernel contained a race condition in some situations, 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-2023-32269) It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863) It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, 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-2023-40283) It was discovered that some network classifier implementations in the Linux kernel contained use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4128) It was discovered that the JFS file system implementation in the Linux kernel did not properly validate memory allocations in certain situations, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious JFS image that, when mounted, could cause a denial of service (system crash). (CVE-2023-4385) It was discovered that the VMware VMXNET3 ethernet driver in the Linux kernel contained a use-after-free vulnerability in certain situations. A local attacker in a guest VM could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4387) It was discovered that the VMware VMXNET3 ethernet driver in the Linux kernel did not properly handle errors in certain situations, leading to a null pointer dereference vulnerability. A local attacker in a guest VM could use this to cause a denial of service (system crash). (CVE-2023-4459)

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/type
• agent/severity
• agent/references
• agent/first-publish-date
• agent/last-modified-date
• agent/softwarecombine
• agent/title
• agent/weakness
• agent/description
• agent/event
• agent/tags
• agent/trending
• collector/usn
• source/Ubuntu
• agent/software-canonical-lookup
• package-manager/ubuntu
• vendor/ubuntu
• canonical/ubuntu ubuntu
• version/ubuntu ubuntu/16.04
• version/ubuntu ubuntu/14.04