Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents. Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again. Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().
References
- https://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4
- http://www.openwall.com/lists/oss-security/2026/05/21/2
FAQ
What is CVE-2026-43494?
CVE-2026-43494 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned...
How severe is CVE-2026-43494?
CVSS scoring is not yet available for CVE-2026-43494. Check NVD for updates.
Is there a patch for CVE-2026-43494?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.