| Name | CVE-2024-27437 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5658-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
| stretch (security) | 4.9.320-2 | vulnerable | |
| stretch (lts), stretch | 4.9.320-3 | vulnerable | |
| buster | 4.19.249-2 | vulnerable | |
| buster (security) | 4.19.304-1 | vulnerable | |
| bullseye | 5.10.209-2 | vulnerable | |
| bullseye (security) | 5.10.205-2 | vulnerable | |
| bookworm | 6.1.76-1 | vulnerable | |
| bookworm (security) | 6.1.85-1 | fixed | |
| trixie | 6.6.15-2 | vulnerable | |
| sid | 6.7.12-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | jessie | (unfixed) | end-of-life | ||
| linux | source | stretch | (unfixed) | end-of-life | ||
| linux | source | bookworm | 6.1.85-1 | DSA-5658-1 | ||
| linux | source | (unstable) | 6.7.12-1 |
https://git.kernel.org/linus/fe9a7082684eb059b925c535682e68c34d487d43 (6.9-rc1)