CVE-2026-43494

A flaw was found in the Linux kernel, specifically within the net/rds module. When a zerocopy page pin operation fails, a counter used for memory management opnents is not correctly reset. This can result in a double-free vulnerability, where the same memory is released twice. A local attacker...

CVE-2026-43494

In the Linux kernel, the following vulnerability has been resolved: net/rds: reset opnents when zerocopy page pin fails When iovitergetpages2 fails in rdsmessagezcopyfromuser, the pinned pages are released with putpage, and rm-data.opmmpznotifier is cleared. But we fail to properly clear...

CVE-2026-43494 net/rds: reset op_nents when zerocopy page pin fails

In the Linux kernel, the following vulnerability has been resolved: net/rds: reset opnents when zerocopy page pin fails When iovitergetpages2 fails in rdsmessagezcopyfromuser, the pinned pages are released with putpage, and rm-data.opmmpznotifier is cleared. But we fail to properly clear...

CVE-2026-43494

CVE-2026-43494 affects the Linux kernel’s net/rds zerocopy path. When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), pinned pages are released and rm->data.op_mmp_znotifier is cleared, but rm->data.op_nents may not be reset. This leads to the cleanup loop in rds_message_purge...

PT-2026-42451

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A double-free issue exists in the Reliable Delivery Service RDS implementation of the Linux kernel. When the iov iter get pages2 function fails within rds message zcopy from user, the...