8.8

CVE-2026-72283

KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails

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]
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 77e1b8332d1d7aa786f7515e9bd4055def6a1e06
Version < d1379888cc4230bac647ec24ab83306afbd03e88
Status affected
Version 77e1b8332d1d7aa786f7515e9bd4055def6a1e06
Version < d5560b6569cd05ba72c6b33427fbabc6ec46b8cf
Status affected
Version 77e1b8332d1d7aa786f7515e9bd4055def6a1e06
Version < ed446e8aa894883c08892cfee69782fdf8f6c3ca
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.17
Status affected
Version 0
Version < 6.17
Status unaffected
Version <= 6.18.*
Version 6.18.40
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.077
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2 6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d1379888cc4230bac647ec24ab83306afbd03e88
https://git.kernel.org/stable/c/d5560b6569cd05ba72c6b33427fbabc6ec46b8cf
https://git.kernel.org/stable/c/ed446e8aa894883c08892cfee69782fdf8f6c3ca