CVE-2022-49325

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 WARN_ON_ONCE(!tp->prior_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->snd_cwnd is set to an illegal value.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04	Patch
https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe	Patch
https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4	Patch
https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-02-26 07:01

Updated : 2025-09-22 20:51

NVD link : CVE-2022-49325

Mitre link : CVE-2022-49325

CVE.ORG link : CVE-2022-49325

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-617

Reachable Assertion

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