Integer overflow in the pipe_build_write_buffer function (sys/kern/sys_pipe.c) in the…
Priority LOW 23CWE-189Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Complete · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Integer overflow in the pipe_build_write_buffer function (sys/kern/sys_pipe.c) in the direct write optimization feature in the pipe implementation in FreeBSD 7.1 through 7.2 and 6.3 through 6.4 allows local users to bypass virtual-to-physical address lookups and read sensitive information in memory pages via unspecified vectors.
Why it matters now
EPSS 0.00436 38th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:6.3:*:*:*:*:*:*:* | 6.3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.3:release_p10:*:*:*:*:*:* | 6.3 release_p10 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.3_releng:*:*:*:*:*:*:* | 6.3_releng | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.4:*:*:*:*:*:*:* | 6.4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.4:release_p4:*:*:*:*:*:* | 6.4 release_p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.4:stable:*:*:*:*:*:* | 6.4 stable | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:* | 7.1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:pre-release:*:*:*:*:*:* | 7.1 pre-release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:rc1:*:*:*:*:*:* | 7.1 rc1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:release-p1:*:*:*:*:*:* | 7.1 release-p1 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:6.3:*:*:*:*:*:*:* Versions 6.3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.3:release_p10:*:*:*:*:*:* Versions 6.3 release_p10 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.3_releng:*:*:*:*:*:*:* Versions 6.3_releng Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.4:*:*:*:*:*:*:* Versions 6.4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.4:release_p4:*:*:*:*:*:* Versions 6.4 release_p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.4:stable:*:*:*:*:*:* Versions 6.4 stable Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:pre-release:*:*:*:*:*:* Versions 7.1 pre-release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:release-p1:*:*:*:*:*:* Versions 7.1 release-p1 Vulnerable ·FreeBSD
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:7.1:release-p2:*:*:*:*:*:* | 7.1 release-p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:release-p5:*:*:*:*:*:* | 7.1 release-p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.1:stable:*:*:*:*:*:* | 7.1 stable | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:7.2:pre-release:*:*:*:*:*:* | 7.2 pre-release | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:7.1:release-p2:*:*:*:*:*:* Versions 7.1 release-p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:release-p5:*:*:*:*:*:* Versions 7.1 release-p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.1:stable:*:*:*:*:*:* Versions 7.1 stable Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:7.2:pre-release:*:*:*:*:*:* Versions 7.2 pre-release Vulnerable ·FreeBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2009-1935
- 2026-10-03 Alias added: GHSA-c36p-gqxq-hcgq
References
More Freebsd vulnerabilities
- 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
Sources
- CVE-2009-1935 · CVE Program
- CVE-2009-1935 · NVD
- FIRST EPSS
- GHSA-c36p-gqxq-hcgq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences