{"id":"DEBIAN-CVE-2022-49325","details":"In the Linux kernel, the following vulnerability has been resolved:  tcp: add accessors to read/set tp-\u003esnd_cwnd  We had various bugs over the years with code breaking the assumption that tp-\u003esnd_cwnd is greater than zero.  Lately, syzbot reported the WARN_ON_ONCE(!tp-\u003eprior_cwnd) added in commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\") can trigger, and without a repro we would have to spend considerable time finding the bug.  Instead of complaining too late, we want to catch where and when tp-\u003esnd_cwnd is set to an illegal value.","modified":"2026-09-01T16:05:30.733927327Z","published":"2025-02-26T07:01:09.323Z","upstream":["CVE-2022-49325"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49325"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49325.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49325.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49325.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"}]}