{"id":"DEBIAN-CVE-2021-47124","details":"In the Linux kernel, the following vulnerability has been resolved:  io_uring: fix link timeout refs  WARNING: CPU: 0 PID: 10242 at lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 RIP: 0010:refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 Call Trace:  __refcount_sub_and_test include/linux/refcount.h:283 [inline]  __refcount_dec_and_test include/linux/refcount.h:315 [inline]  refcount_dec_and_test include/linux/refcount.h:333 [inline]  io_put_req fs/io_uring.c:2140 [inline]  io_queue_linked_timeout fs/io_uring.c:6300 [inline]  __io_queue_sqe+0xbef/0xec0 fs/io_uring.c:6354  io_submit_sqe fs/io_uring.c:6534 [inline]  io_submit_sqes+0x2bbd/0x7c50 fs/io_uring.c:6660  __do_sys_io_uring_enter fs/io_uring.c:9240 [inline]  __se_sys_io_uring_enter+0x256/0x1d60 fs/io_uring.c:9182  io_link_timeout_fn() should put only one reference of the linked timeout request, however in case of racing with the master request's completion first io_req_complete() puts one and then io_put_req_deferred() is called.","modified":"2026-09-01T20:04:36.866366755Z","published":"2024-03-15T21:15:07.260Z","upstream":["CVE-2021-47124"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-47124"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47124.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47124.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47124.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}