A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.
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Canonical
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Debian Linux
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Linux
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2940-1 | linux security update |
Debian DLA |
DLA-2941-1 | linux-4.19 security update |
Debian DSA |
DSA-5096-1 | linux security update |
EUVD |
EUVD-2021-26940 | A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system. |
Ubuntu USN |
USN-5265-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5267-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5267-3 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-5268-1 | Linux kernel vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-03T17:01:07.744Z
Reserved: 2021-07-09T00:00:00
Link: CVE-2021-3640
No data.
Status : Modified
Published: 2022-03-03T23:15:08.197
Modified: 2024-11-21T06:22:03.073
Link: CVE-2021-3640
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN