CVE-2024-26810
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Lock external INTx masking ops Mask operations through config space changes to DisINTx may race INTx configuration changes via ioctl.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Lock external INTx masking ops Mask operations through config space changes to DisINTx may race INTx configuration changes via ioctl. Create wrappers that add locking for paths outside of the core interrupt code. In particular, irq_type is updated holding igate, therefore testing is_intx() requires holding igate. For example clearing DisINTx from config space can otherwise race changes of the interrupt configuration. This aligns interfaces which may trigger the INTx eventfd into two camps, one side serialized by igate and the other only enabled while INTx is configured. A subsequent patch introduces synchronization for the latter flows.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.20% probability · 9th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bfPatch
- https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651Patch
- https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42Patch
- https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3Patch
- https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5Patch
- https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40Patch
- https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7Patch
- https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6Patch
- https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bfPatch
- https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651Patch
- https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42Patch
- https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3Patch
- https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5Patch
- https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40Patch
- https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7Patch
- https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.