CVE-2021-3640

HIGH

7.0

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.

CVE Details

CVSS v3.1 Score7.0

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published3/3/2022

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxdebian:debian_linuxfedoraproject:fedoralinux:linux_kernelnetapp:h300enetapp:h300e_firmwarenetapp:h300snetapp:h300s_firmwarenetapp:h410cnetapp:h410c_firmwarenetapp:h410snetapp:h410s_firmwarenetapp:h500enetapp:h500e_firmwarenetapp:h500snetapp:h500s_firmwarenetapp:h700enetapp:h700e_firmwarenetapp:h700snetapp:h700s_firmware

Weaknesses (CWE)

CWE-362CWE-416

References

https://bugzilla.redhat.com/show_bug.cgi?id=1980646(secalert@redhat.com)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951(secalert@redhat.com)

https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(secalert@redhat.com)

https://security.netapp.com/advisory/ntap-20220419-0003/(secalert@redhat.com)

https://ubuntu.com/security/CVE-2021-3640(secalert@redhat.com)

https://www.debian.org/security/2022/dsa-5096(secalert@redhat.com)

https://www.openwall.com/lists/oss-security/2021/07/22/1(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1980646(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20220419-0003/(af854a3a-2127-422b-91ae-364da2661108)

https://ubuntu.com/security/CVE-2021-3640(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2022/dsa-5096(af854a3a-2127-422b-91ae-364da2661108)

https://www.openwall.com/lists/oss-security/2021/07/22/1(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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