Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-15348 | Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer. |
Ubuntu USN |
USN-5015-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-5046-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5050-1 | Linux kernel vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Projects
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Status: PUBLISHED
Assigner: XEN
Published:
Updated: 2024-08-03T21:47:33.196Z
Reserved: 2021-03-18T00:00:00
Link: CVE-2021-28691
No data.
Status : Modified
Published: 2021-06-29T12:15:08.543
Modified: 2024-11-21T06:00:09.150
Link: CVE-2021-28691
No data.
OpenCVE Enrichment
No data.
Weaknesses
EUVD
Ubuntu USN