CVE-2021-41073
moderate-risk
Published 2021-09-19
loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.
Do I need to act?
~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10
High
LOCAL
/ LOW complexity
Affected Products (14)
Affected Vendors
References (16)
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211014-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4978
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211014-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4978
46
/ 100
moderate-risk
Severity
24/34 · High
Exploitability
4/34 · Minimal
Exposure
18/34 · Moderate