Bug 2453035 (CVE-2026-5123) - CVE-2026-5123 github.com/osrg/gobgp: osrg GoBGP: Denial of service via off-by-one error
Summary: CVE-2026-5123 github.com/osrg/gobgp: osrg GoBGP: Denial of service via off-by...
Keywords:
Status: NEW
Alias: CVE-2026-5123
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2453525
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 16:02 UTC by OSIDB Bzimport
Modified: 2026-06-02 08:29 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-03-30 16:02:36 UTC 
A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue.
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