CVE-2021-3640
- State
- Published
- Severity
- Not scored
- Published
- Mar 3, 2022
- Updated
- Aug 3, 2024
- Reserved
- Jul 9, 2021
Description
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), CWE-416 - Use After Free.
Affected Products
| Product | Versions |
|---|---|
kerneln/a |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1980646
- https://ubuntu.com/security/CVE-2021-3640
- https://www.openwall.com/lists/oss-security/2021/07/22/1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951
- https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951
- [debian-lts-announce] 20220309 [SECURITY] [DLA 2940-1] linux security updatemailing-list
- [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security updatemailing-list
- DSA-5096vendor-advisory
- https://security.netapp.com/advisory/ntap-20220419-0003/
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