CVE-2026-72283
8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails
Nullify irqfd->producer if updating the IRTE for bypass fails, as leaving a dangling pointer will result in a use-after-free if the irqfd is reachable through KVM's routing, but the producer is freed separately. E.g. for VFIO PCI, the producer is embedded in struct "vfio_pci_irq_ctx" and freed when the vector is disabled, which can happen independent of routing updates.
[sean: drop PPC change, massage changelog]
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 < d1379888cc4230bac647ec24ab83306afbd03e88 | affected |
| Linux | Linux | 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 < d5560b6569cd05ba72c6b33427fbabc6ec46b8cf | affected |
| Linux | Linux | 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 < ed446e8aa894883c08892cfee69782fdf8f6c3ca | affected |
| Linux | Linux | 6.17 | affected |
| Linux | Linux | 0 < 6.17 | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d1379888cc4230bac647ec24ab83306afbd03e88
- https://git.kernel.org/stable/c/d5560b6569cd05ba72c6b33427fbabc6ec46b8cf
- https://git.kernel.org/stable/c/ed446e8aa894883c08892cfee69782fdf8f6c3ca
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