{"id":"DEBIAN-CVE-2023-53590","details":"In the Linux kernel, the following vulnerability has been resolved:  sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop  With this refcnt added in sctp_stream_priorities, we don't need to traverse all streams to check if the prio is used by other streams when freeing one stream's prio in sctp_sched_prio_free_sid(). This can avoid a nested loop (up to 65535 * 65535), which may cause a stuck as Ying reported:      watchdog: BUG: soft lockup - CPU#23 stuck for 26s! [ksoftirqd/23:136]     Call Trace:      \u003cTASK\u003e      sctp_sched_prio_free_sid+0xab/0x100 [sctp]      sctp_stream_free_ext+0x64/0xa0 [sctp]      sctp_stream_free+0x31/0x50 [sctp]      sctp_association_free+0xa5/0x200 [sctp]  Note that it doesn't need to use refcount_t type for this counter, as its accessing is always protected under the sock lock.  v1-\u003ev2:  - add a check in sctp_sched_prio_set to avoid the possible prio_head    refcnt overflow.","modified":"2026-09-15T09:02:46.520335212Z","published":"2025-10-04T16:15:55.437Z","upstream":["CVE-2023-53590"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53590"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53590.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53590.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53590.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"}]}