CVE - CVE-2021-3640

CVE-ID
CVE-2021-3640	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:DSA-5096 URL:https://www.debian.org/security/2022/dsa-5096 MISC:[debian-lts-announce] 20220309 [SECURITY] [DLA 2940-1] linux security update URL:https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html MISC:[debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update URL:https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1980646 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1980646 MISC:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951 URL:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951 MISC:https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951 URL:https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951 MISC:https://security.netapp.com/advisory/ntap-20220419-0003/ URL:https://security.netapp.com/advisory/ntap-20220419-0003/ MISC:https://ubuntu.com/security/CVE-2021-3640 URL:https://ubuntu.com/security/CVE-2021-3640 MISC:https://www.openwall.com/lists/oss-security/2021/07/22/1 URL:https://www.openwall.com/lists/oss-security/2021/07/22/1
Assigning CNA
Red Hat, Inc.
Date Record Created
20210709	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210709)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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