CVE-2021-3640
High
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.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedMar 3, 2022
First seenMar 3, 2022
Weakness typeCWE-362Race condition
How to fix
Update
- linux linux_kernel4.4.293, 4.9.291, 4.14.256, 4.19.218, 5.4.160, 5.10.80, 5.14.19, 5.15.3 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.4.293, 4.5 ≤ v < 4.9.291, 4.10 ≤ v < 4.14.256, 4.15 ≤ v < 4.19.218, 4.20 ≤ v < 5.4.160, 5.5.0 ≤ v < 5.10.80, 5.11 ≤ v < 5.14.19, 5.15 ≤ v < 5.15.3 | 4.4.293, 4.9.291, 4.14.256, 4.19.218, 5.4.160, 5.10.80, 5.14.19, 5.15.3 |
| debian debian_linux | 9.0 | — |
| fedoraproject fedora | 34 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04, 21.10 | — |
| netapp h300s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp h410c_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
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