CVE-2022-49325
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49325
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49325.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49325
- Downstream
- Related
- Published
- 2025-02-26T07:01:09Z
- Modified
- 2025-09-22T20:51:09Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
tcp: add accessors to read/set tp->snd_cwnd
We had various bugs over the years with code breaking the assumption that tp->snd_cwnd is greater than zero.
Lately, syzbot reported the WARNONONCE(!tp->priorcwnd) added in commit 8b8a321ff72c ("tcp: fix zero cwnd in tcpcwnd_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->snd_cwnd is set to an illegal value.
- References