Description
In the Linux kernel, the following vulnerability has been resolved:
irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
With ACPI in place, gicv2m_get_fwnode() is registered with the pci subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime during a PCI host bridge probe. But, the call back is wrongly marked as __init, causing it to be freed, while being registered with the PCI subsystem and could trigger:
Unable to handle kernel paging request at virtual address ffff8000816c0400 gicv2m_get_fwnode+0x0/0x58 (P) pci_set_bus_msi_domain+0x74/0x88 pci_register_host_bridge+0x194/0x548
This is easily reproducible on a Juno board with ACPI boot.
Retain the function for later use.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 0644b3daca28dcb320373ae20069c269c9386304, < 0c241dedc43a036599757cd08f356253fa3e5014; >= 0644b3daca28dcb320373ae20069c269c9386304, < b63de43af8d215b0499eac28b2caa4439183efc1; >= 0644b3daca28dcb320373ae20069c269c9386304, < f95659affee301464f0d058d528d96b35b452da8; >= 0644b3daca28dcb320373ae20069c269c9386304, < dc0d654eb4179b06d3206e4396d072108b9ba082; >= 0644b3daca28dcb320373ae20069c269c9386304, < 2f2803e4b5e4df2b08d378deaab78b1681ef9b30; >= 0644b3daca28dcb320373ae20069c269c9386304, < 3939d6f29d34cdb60e3f68b76e39e00a964a1d51; >= 0644b3daca28dcb320373ae20069c269c9386304, < 47bee0081b483b077c7560bc5358ad101f89c8ef; >= 0644b3daca28dcb320373ae20069c269c9386304, < 3318dc299b072a0511d6dfd8367f3304fb6d9827 |
| Linux | Linux | 4.5 |
References
- https://git.kernel.org/stable/c/0c241dedc43a036599757cd08f356253fa3e5014Patch
- https://git.kernel.org/stable/c/2f2803e4b5e4df2b08d378deaab78b1681ef9b30Patch
- https://git.kernel.org/stable/c/3318dc299b072a0511d6dfd8367f3304fb6d9827Patch
- https://git.kernel.org/stable/c/3939d6f29d34cdb60e3f68b76e39e00a964a1d51Patch
- https://git.kernel.org/stable/c/47bee0081b483b077c7560bc5358ad101f89c8efPatch
- https://git.kernel.org/stable/c/b63de43af8d215b0499eac28b2caa4439183efc1Patch
- https://git.kernel.org/stable/c/dc0d654eb4179b06d3206e4396d072108b9ba082Patch
- https://git.kernel.org/stable/c/f95659affee301464f0d058d528d96b35b452da8Patch
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
Timeline
- Published
- May 8, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed