Informazioni sul CVE-2021-47060
KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
CWE ID: N/A
Base Score (CVSS): N/A
CVE: CVE-2021-47060
Descrizione: In the Linux kernel, the following vulnerability has been resolved: KVM: Stop looking for coalesced MMIO zones if the bus is destroyed Abort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev() fails to allocate memory for the new instance of the bus. If it can’t instantiate a new bus, unregister_dev() destroys all devices _except_ the target device. But, it doesn’t tell the caller that it obliterated the bus and invoked the destructor for all devices that were on the bus. In the coalesced MMIO case, this can result in a deleted list entry dereference due to attempting to continue iterating on coalesced_zones after future entries (in the walk) have been deleted. Opportunistically add curly braces to the for-loop, which encompasses many lines but sneaks by without braces due to the guts being a single if statement.
Vettore di attacco
Punteggio CVSS
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Riassunto: .
Dettaglio del Vettore
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Riferimenti esterni
- https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d
- https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85
- https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c
- https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c
- https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417
Prodotti interessati
- Linux – Linux
- Linux – Linux
Relazioni con altri prodotti
Produttore:Linux
Prodotto: Linux
Anno: 2021
CWE:
CVSS: 0.0