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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2021/09/18/2 | Mailing List Third Party Advisory |
http://www.openwall.com/lists/oss-security/2022/06/04/4 | Mailing List Third Party Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc | Patch Vendor Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J7KSMIOQ4377CVTHMWNGNCWHMCRFRP2T/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAP4TXEZ7J4EZQMQW5SIJMWXG7WZT3F7/ | |
https://security.netapp.com/advisory/ntap-20211014-0003/ | Third Party Advisory |
https://www.debian.org/security/2021/dsa-4978 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-19T16:02:30
Updated: 2022-06-04T23:06:09
Reserved: 2021-09-14T00:00:00
Link: CVE-2021-41073
JSON object: View
NVD Information
Status : Modified
Published: 2021-09-19T17:15:07.227
Modified: 2023-11-07T03:38:48.933
Link: CVE-2021-41073
JSON object: View
Redhat Information
No data.
CWE