DEBIAN-CVE-2026-63626

Source
https://security-tracker.debian.org/tracker/CVE-2026-63626
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63626.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-63626
Upstream
Published
2026-10-14T19:17:18Z
Modified
2026-10-15T05:01:13Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Mongoose is an embedded web server and network library. Prior to 7.23, ppp_handle_ipv6cp() in src/l2_ppp.c trusts the 16-bit IPv6CP len field without checking it against the received payload size. On a PPP or PPPoE link using MG_ENABLE_TCPIP and MG_ENABLE_IPV6, an unauthenticated adjacent peer can complete the required LCP exchange and send a short Configure-Request with an oversized length, causing ppp_tx_frame() to read beyond recv_queue.buf and write beyond tx.buf. The same length misuse can also expose adjacent heap bytes in a reply or hang the event loop through find_opt(). This issue is fixed in version 7.23.

References

Affected packages

Debian:14 / mongoose

Package

Name
mongoose
Purl
pkg:deb/debian/mongoose?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
7.23+ds-1

Affected versions

7.*
7.21+ds-1~bpo13+1
7.21+ds-1
7.21+ds-2
7.22+ds-1~bpo13+1
7.22+ds-1
7.23+ds-1~bpo13+1

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63626.json"