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CVE-2024-26812

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Create persistent INTx handler A vulnerability exists where the eventfd for INTx signaling can be deconfigured, which unregisters the IRQ handler but still allows eventfds to be signaled with a NULL context through the SET_IRQS ioctl or through unmask irqfd if the device interrupt is pending. Ideally this could be solved with some additional locking; the igate mutex serializes the ioctl and config space accesses, and the interrupt handler is unregistered relative to the trigger, but the irqfd path runs asynchronous to those. The igate mutex cannot be acquired from the atomic context of the eventfd wake function. Disabling the irqfd relative to the eventfd registration is potentially incompatible with existing userspace. As a result, the solution implemented here moves configuration of the INTx interrupt handler to track the lifetime of the INTx context object and irq_type configuration, rather than registration of a particular trigger eventfd. Synchronization is added between the ioctl path and eventfd_signal() wrapper such that the eventfd trigger can be dynamically updated relative to in-flight interrupts or irqfd callbacks.

Related Files

Ubuntu Security Notice USN-6927-1
Posted Jul 30, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6927-1 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-38096, CVE-2023-52488, CVE-2023-52699, CVE-2023-52752, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-25742, CVE-2024-26629, CVE-2024-26642, CVE-2024-26643, CVE-2024-26654, CVE-2024-26812
SHA-256 | 2b7f49f8df6cecee55ce10c9b9148f1a8b33c065e92cc3573f8b05797c10f13a
Ubuntu Security Notice USN-6898-4
Posted Jul 23, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6898-4 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-38096, CVE-2023-52880, CVE-2024-23307, CVE-2024-24861, CVE-2024-25739, CVE-2024-26629, CVE-2024-26654, CVE-2024-26687, CVE-2024-26811, CVE-2024-26812, CVE-2024-26814, CVE-2024-26828, CVE-2024-26922, CVE-2024-26925
SHA-256 | 8b053de7161b766a9cba5511fe20d03faf97b54bcfcc24fb43aa58677af61c15
Ubuntu Security Notice USN-6898-3
Posted Jul 19, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6898-3 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-38096, CVE-2023-52488, CVE-2023-52699, CVE-2023-52880, CVE-2024-23307, CVE-2024-24861, CVE-2024-25739, CVE-2024-26629, CVE-2024-26642, CVE-2024-26654, CVE-2024-26811, CVE-2024-26812, CVE-2024-26813, CVE-2024-26814
SHA-256 | 9d8578e4d65e6a905377c4eafbc6560f359e3400f28ae0a9eb49ebc1093b3b26
Ubuntu Security Notice USN-6896-3
Posted Jul 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-3 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52656, CVE-2023-52699, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586, CVE-2024-26687, CVE-2024-26812, CVE-2024-26813
SHA-256 | a1423a94bbd0e244b50a9dcc42a0d161e6c9763ef9a664b4bc82761901f3c48b
Ubuntu Security Notice USN-6898-2
Posted Jul 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6898-2 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-38096, CVE-2023-52880, CVE-2024-23307, CVE-2024-24861, CVE-2024-25739, CVE-2024-26629, CVE-2024-26642, CVE-2024-26654, CVE-2024-26687, CVE-2024-26812, CVE-2024-26813, CVE-2024-26817, CVE-2024-26828, CVE-2024-26926
SHA-256 | 0ab8434a912c1a37f7ce3d27489ffab441a7e52cdc71e41d0a0713946e958fbe
Ubuntu Security Notice USN-6898-1
Posted Jul 15, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6898-1 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-38096, CVE-2023-52880, CVE-2024-23307, CVE-2024-24861, CVE-2024-25739, CVE-2024-26642, CVE-2024-26654, CVE-2024-26687, CVE-2024-26812, CVE-2024-26813, CVE-2024-26828, CVE-2024-26923, CVE-2024-26926, CVE-2024-26934
SHA-256 | ee181d7c57544b38471cdfdd8a2ee4fb18baf1502aad94b568edad8babad667d
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