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CVE-2022-26129

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the...

7.8 HighFix available

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.01%Up 0.1 points since Mar 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
EUVDEUVD-2022-30696 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
EUVD-2022-30696
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-54p4-8qjr-jvgc 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the...

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
GHSA-54p4-8qjr-jvgc
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
OSVALPINE-CVE-2022-26129 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
ALPINE-CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
Show 5 moreShow less
OSVDEBIAN-CVE-2022-26129 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
DEBIAN-CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSVUBUNTU-CVE-2022-26129 7.8

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

Record
UBUNTU-CVE-2022-26129
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2022:0901-1 No score

Security update for frr

This update for frr fixes the following issues:

  • CVE-2022-26125, CVE-2022-26126: Fixed buffer overflows in unpack_tlv_router_cap() (bsc#1196505, bsc#1196506).
  • CVE-2022-26127: Fixed heap buffer overflow in babel_packet_examin() (bsc#1196503).
  • CVE-2022-26128: Fixed buffer overflows in babel_packet_examin() (bsc#1196507).
  • CVE-2022-26129: Fixed buffer overflows in parse_hello_subtlv(), parse_ihu_subtlv() and parse_update_subtlv() (bsc#1196504).
Record
openSUSE-SU-2022:0901-1
Updated
2026-11-02
OSVSUSE-SU-2022:0901-1 No score

Security update for frr

This update for frr fixes the following issues:

  • CVE-2022-26125, CVE-2022-26126: Fixed buffer overflows in unpack_tlv_router_cap() (bsc#1196505, bsc#1196506).
  • CVE-2022-26127: Fixed heap buffer overflow in babel_packet_examin() (bsc#1196503).
  • CVE-2022-26128: Fixed buffer overflows in babel_packet_examin() (bsc#1196507).
  • CVE-2022-26129: Fixed buffer overflows in parse_hello_subtlv(), parse_ihu_subtlv() and parse_update_subtlv() (bsc#1196504).
Record
SUSE-SU-2022:0901-1
Updated
2026-11-02
OSVUSN-6807-1 No score

frr vulnerabilities

It was discovered that FRR incorrectly handled certain network traffic. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. (CVE-2022-26126, CVE-2022-26127, CVE-2022-26128, CVE-2022-26129, CVE-2022-37032, CVE-2022-37035, CVE-2023-31490, CVE-2023-38406, CVE-2023-38407, CVE-2023-46752, CVE-2023-46753, CVE-2023-47234, CVE-2023-47235, CVE-2024-31948)

Ben Cartwright-Cox discovered that FRR incorrectly handled certain network traffic. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. (CVE-2023-38802)

Record
USN-6807-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
frr
Alpine:v3.16
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.17
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.18
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.19
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.20
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.21
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.22
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.23
 before 8.2.1-r0
8.2.1-r0
frr
Alpine:v3.24
 before 8.2.1-r0
8.2.1-r0
frr
Debian:12
 before 8.4.1-1
8.4.1-1
Show 8 moreShow less
Affected packages
PackageAffectedFixed
frr
Debian:13
 before 8.4.1-1
8.4.1-1
frr
Debian:14
 before 8.4.1-1
8.4.1-1
frr
Debian:10
 before 7.5.1-1.1+deb10u2, plus listed versions
6.0.2-26.0.2-2+deb10u16.0.2-2+deb10u27.2-17.2.1-1
Show 8 moreShow less
7.3.1-17.4-17.4-1.17.4-27.5-17.5.1-17.5.1-1.17.5.1-1.1+deb10u1
7.5.1-1.1+deb10u2
frr
Debian:11
 before 7.5.1-1.1+deb11u3, plus listed versions
7.5.1-1.17.5.1-1.1+deb11u17.5.1-1.1+deb11u2
7.5.1-1.1+deb11u3
frr
SUSE:Linux Enterprise Module for Server Applications 15 SP3
 before 7.4-150300.4.3.1
7.4-150300.4.3.1
frr
Ubuntu:Pro:20.04:LTS
 before 7.2.1-1ubuntu0.2+esm2, plus listed versions
6.0.2-2build27.2-1ubuntu17.2-1ubuntu27.2.1-17.2.1-1ubuntu0.17.2.1-1ubuntu0.27.2.1-1ubuntu0.2+esm1
7.2.1-1ubuntu0.2+esm2
frr
Ubuntu:22.04:LTS
 before 8.1-1ubuntu1, plus listed versions
7.5.1-1.18.1-1
8.1-1ubuntu1
frr
openSUSE:Leap 15.3
 before 7.4-150300.4.3.1
7.4-150300.4.3.1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-26129 is a high vulnerability (CVSS 7.8) in Frrouting, published March 3, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.01%, the 63rd percentile. Fixed in frr 8.2.1-r0.

References

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