Tracker / CVE-2021-3640
CVE-2021-3640
High 7.0
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.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| debian | debian_linux |
| fedoraproject | fedora |
| linux | linux_kernel · … → 4.4.293 |
| linux | linux_kernel · 4.10 → 4.14.256 |
| linux | linux_kernel · 4.15 → 4.19.218 |
| linux | linux_kernel · 4.20 → 5.4.160 |
| linux | linux_kernel · 4.5 → 4.9.291 |
| linux | linux_kernel · 5.11 → 5.14.19 |
| linux | linux_kernel · 5.15 → 5.15.3 |
| linux | linux_kernel · 5.5.0 → 5.10.80 |
| netapp | h300e_firmware |
| netapp | h300s_firmware |
| netapp | h410c_firmware |
| netapp | h410s_firmware |
| netapp | h500e_firmware |
| netapp | h500s_firmware |
| netapp | h700e_firmware |
| netapp | h700s_firmware |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.