PRIOn knowledge basePRION:CVE-2021-3640Race condition
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| ubuntu_linux | eq | 18.04 | |
| ubuntu_linux | eq | 14.04 | |
| ubuntu_linux | eq | 20.04 | |
| ubuntu_linux | eq | 16.04 | |
| ubuntu_linux | eq | 21.10 | |
| debian_linux | eq | 9.0 | |
| fedora | eq | 34 | |
| linux_kernel | ge | 5.11 | |
| linux_kernel | lt | 5.14.19 | |
| linux_kernel | ge | 5.15 |
References
bugzilla.redhat.com/show_bug.cgi?id=1980646
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951
github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951
lists.debian.org/debian-lts-announce/2022/03/msg00011.html
lists.debian.org/debian-lts-announce/2022/03/msg00012.html
security.netapp.com/advisory/ntap-20220419-0003/
ubuntu.com/security/CVE-2021-3640
www.debian.org/security/2022/dsa-5096
www.openwall.com/lists/oss-security/2021/07/22/1
Related
