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CVE-2024-26813

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: vfio/platform: Create persistent IRQ handlers The vfio-platform SET_IRQS ioctl currently allows loopback triggering of an interrupt before a signaling eventfd has been configured by the user, which thereby allows a NULL pointer dereference. Rather than register the IRQ relative to a valid trigger, register all IRQs in a disabled state in the device open path. This allows mask operations on the IRQ to nest within the overall enable state governed by a valid eventfd signal. This decouples @masked, protected by the @locked spinlock from @trigger, protected via the @igate mutex. In doing so, it's guaranteed that changes to @trigger cannot race the IRQ handlers because the IRQ handler is synchronously disabled before modifying the trigger, and loopback triggering of the IRQ via ioctl is safe due to serialization with trigger changes via igate. For compatibility, request_irq() failures are maintained to be local to the SET_IRQS ioctl rather than a fatal error in the open device path. This allows, for example, a userspace driver with polling mode support to continue to work regardless of moving the request_irq() call site. This necessarily blocks all SET_IRQS access to the failed index.

Related Files

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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