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TI-2022-07261 Aliases CVE-2022-23092GHSA-gvf3-496w-8fm9

Missing bounds check in 9p message handling

Priority MEDIUM 41CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00654 51st percentileScored 2026-11-07
Fix Fixed FreeBSD (FreeBSD): p1, p12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FreeBSDFreeBSD13.1-RELEASE to before p1; 13.0-RELEASE to before p12p1, p12Patch availableCNA
  • FreeBSD VendorFreeBSD Affected 13.1-RELEASE to before p1; 13.0-RELEASE to before p12 Fixed in p1, p12 Patch available CNA

CPE configurations NVD · 25

CPEVersionsRoleVendor
cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:*13.0 beta1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:*13.0 beta2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:*13.0 beta3VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:beta3-p1:*:*:*:*:*:*13.0 beta3-p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:*13.0 beta4VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:*13.0 p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p10:*:*:*:*:*:*13.0 p10VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p11:*:*:*:*:*:*13.0 p11VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:*13.0 p2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:*13.0 p3VulnerableFreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:* Versions 13.0 beta1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:* Versions 13.0 beta2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:* Versions 13.0 beta3 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:beta3-p1:*:*:*:*:*:* Versions 13.0 beta3-p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:* Versions 13.0 beta4 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:* Versions 13.0 p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p10:*:*:*:*:*:* Versions 13.0 p10 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p11:*:*:*:*:*:* Versions 13.0 p11 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:* Versions 13.0 p2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:* Versions 13.0 p3 Vulnerable ·FreeBSD
Show 15 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:freebsd:freebsd:13.0:p4:*:*:*:*:*:*13.0 p4VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p5:*:*:*:*:*:*13.0 p5VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p6:*:*:*:*:*:*13.0 p6VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p7:*:*:*:*:*:*13.0 p7VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p8:*:*:*:*:*:*13.0 p8VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:p9:*:*:*:*:*:*13.0 p9VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:*13.0 rc1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:*13.0 rc2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:*13.0 rc3VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:*13.0 rc4VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:*13.0 rc5VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.0:rc5-p1:*:*:*:*:*:*13.0 rc5-p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.1:b1-p1:*:*:*:*:*:*13.1 b1-p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.1:b2-p2:*:*:*:*:*:*13.1 b2-p2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.1:rc1-p1:*:*:*:*:*:*13.1 rc1-p1VulnerableFreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p4:*:*:*:*:*:* Versions 13.0 p4 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p5:*:*:*:*:*:* Versions 13.0 p5 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p6:*:*:*:*:*:* Versions 13.0 p6 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p7:*:*:*:*:*:* Versions 13.0 p7 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p8:*:*:*:*:*:* Versions 13.0 p8 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:p9:*:*:*:*:*:* Versions 13.0 p9 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:* Versions 13.0 rc1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:* Versions 13.0 rc2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:* Versions 13.0 rc3 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:* Versions 13.0 rc4 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:* Versions 13.0 rc5 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.0:rc5-p1:*:*:*:*:*:* Versions 13.0 rc5-p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.1:b1-p1:*:*:*:*:*:* Versions 13.1 b1-p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.1:b2-p2:*:*:*:*:*:* Versions 13.1 b2-p2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.1:rc1-p1:*:*:*:*:*:* Versions 13.1 rc1-p1 Vulnerable ·FreeBSD

Remediation

  • Fix · CNA FreeBSD (FreeBSD) Fixed in p1, p12

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-23092
  2. 2026-10-03 Alias added: GHSA-gvf3-496w-8fm9
  3. 2026-10-14 EPSS moved to the 50th–90th percentile

References

Advisory 2

  • TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
  • TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
  • TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
  • TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
See all 576 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences