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CVE-2021-47061

KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected f65886606c2d3b562716de030706dfe1bea4ed5e before 03c6cccedd3913006744faa252a4da5145299343; affected f65886606c2d3b562716de030706dfe1bea4ed5e before 4e899ca848636b37e9ac124bc1723862a7d7d927; affected f65886606c2d3b562716de030706dfe1bea4ed5e before 30f46c6993731efb2a690c9197c0fd9ed425da2d; affected f65886606c2d3b562716de030706dfe1bea4ed5e before 2ee3757424be7c1cd1d0bbfa6db29a7edd82a250; affected f0dfffce3f4ffd5f822568a4a6fb34c010e939d1; affected 840e124f89a5127e7eb97ebf377f4b8ca745c070; affected 40a023f681befd9b2862a3c16fb306a38b359ae5; affected 19184bd06f488af62924ff1747614a8cb284ad63; affected 41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d; affected 68c125324b5e1d1d22805653735442923d896a1d; affected 4.4.238 before 4.5; affected 4.9.238 before 4.10; affected 4.14.200 before 4.15; affected 4.19.148 before 4.20; affected 5.4.66 before 5.5; affected 5.8.10 before 5.9
Linux / Linuxaffected 5.9; unaffected 0 before 5.9; unaffected 5.10.37 through 5.10.*; unaffected 5.11.21 through 5.11.*; unaffected 5.12.4 through 5.12.*; unaffected 5.13 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.