CVE-2021-47061 (GCVE-0-2021-47061)

Vulnerability from cvelistv5 – Published: 2024-02-29 22:37 – Updated: 2025-05-04 12:41
VLAI?
Title
KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 03c6cccedd3913006744faa252a4da5145299343 (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 4e899ca848636b37e9ac124bc1723862a7d7d927 (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 30f46c6993731efb2a690c9197c0fd9ed425da2d (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 2ee3757424be7c1cd1d0bbfa6db29a7edd82a250 (git)
Affected: f0dfffce3f4ffd5f822568a4a6fb34c010e939d1 (git)
Affected: 840e124f89a5127e7eb97ebf377f4b8ca745c070 (git)
Affected: 40a023f681befd9b2862a3c16fb306a38b359ae5 (git)
Affected: 19184bd06f488af62924ff1747614a8cb284ad63 (git)
Affected: 41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d (git)
Affected: 68c125324b5e1d1d22805653735442923d896a1d (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.37 , ≤ 5.10.* (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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