2347688 – (CVE-2022-49727) CVE-2022-49727 kernel: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Bug 2347688 (CVE-2022-49727) - CVE-2022-49727 kernel: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Summary: CVE-2022-49727 kernel: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Keywords:
Status:	NEW
Alias:	CVE-2022-49727
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2025-02-26 03:03 UTC by OSIDB Bzimport
Modified:	2025-03-03 03:48 UTC (History)
CC List:	4 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2025-02-26 03:03:16 UTC

In the Linux kernel, the following vulnerability has been resolved:

ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be
overflow. To fix, we can follow what udpv6 does and subtract the
transhdrlen from the max.

Comment 1 Mauro Matteo Cascella 2025-02-26 09:14:06 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022633-CVE-2022-49727-a010@gregkh/T

Note You need to log in before you can comment on or make changes to this bug.