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Name
CVE-2026-28532
Source
NVD ( link)Debian ( link)
Description
FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segment Routing TLV parser functions where a uint16_t accumulator variable truncates uint32_t values returned by the TLV_SIZE() macro, causing the loop termination condition to fail while pointer advancement continues unchecked. Attackers with an established OSPF adjacency can send a crafted LS Update packet with a malicious Type 10 or Type 11 Opaque LSA to trigger out-of-bounds memory reads and crash all affected routers in the OSPF area or autonomous system.
CWEs
CWE-125
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfdPatch
https://github.com/FRRouting/frr/pull/21002Issue Tracking
https://github.com/FRRouting/frr/releases/tag/frr-10.5.3Release Notes
https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functionsThird Party Advisory

Analysis#

Affected Component
Analysis
frr
Patched

Vulnerability Ratings#

6
CVSSv4
6.5
CVSSv31
NaN
other

Others affected components#

Name
Project
Project Version
Version
Status
frr
buildroot
2025.02.x
10.3
Exploitable
frr
buildroot
master
10.5.4
Not Affected
frr
openwrt
master
10.6.1-r1
Not Affected
frr
yocto
kirkstone
8.2.2
Exploitable
frr
yocto
master
10.6.1
Not Affected

Resolved with patches#

frr (yocto:scarthgap)

#
Title
Author
Resolve
1
ospfd: harden TE/SR TLV iteration against malformed lengths
Jafar Al-Gharaibeh <jafar@atcorp.com>
CVE-2026-28532