CVE-2026-43494

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().

• Linux Kernel

  OS
  Linux
  7.15.11 – 5.15.209 (bez)5.16 – 6.1.175 (bez)6.2 – 6.6.141 (bez)4.17 – 5.10.258 (bez)6.13 – 6.18.33 (bez)6.19 – 7.0.10 (bez)6.7 – 6.12.91 (bez)