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CVE-2024-27437

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.

Related Files

Ubuntu Security Notice USN-7039-1
Posted Sep 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7039-1 - Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2021-47181, CVE-2022-48791, CVE-2022-48838, CVE-2022-48850, CVE-2022-48851, CVE-2022-48863, CVE-2023-52809, CVE-2024-26677, CVE-2024-26733, CVE-2024-27437, CVE-2024-38570, CVE-2024-42154, CVE-2024-42228
SHA-256 | dfba7d8e80b84fb47dc725d81c166af93f650cff7e694ffb3bd882ed52b39a79
Ubuntu Security Notice USN-7028-1
Posted Sep 23, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7028-1 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-47188, CVE-2022-48863, CVE-2023-52809, CVE-2024-26651, CVE-2024-26677, CVE-2024-26851, CVE-2024-27437, CVE-2024-38570, CVE-2024-38583, CVE-2024-39480, CVE-2024-39495, CVE-2024-42224
SHA-256 | 7de5ce15aa6cad3ce493ec92fd8b9feaa278435231abe1f16c95487428745116
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