Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.10, < 5.10.68 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 33 |
| Netapp | Cloud Backup | - |
| Netapp | Solidfire Baseboard Management Controller | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H410S Firmware | - |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/09/18/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/18/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/04/4Mailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16PatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20211014-0003/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/18/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/18/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/04/4Mailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16PatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20211014-0003/Third Party Advisory
FAQ
What is CVE-2021-41073?
CVE-2021-41073 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2021-41073?
CVE-2021-41073 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41073?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Fedoraproject Fedora, Netapp Cloud Backup, Netapp Solidfire Baseboard Management Controller.