CVE-2009-1935 json
Integer overflow in the pipe_build_write_buffer function (sys/kern/sys_pipe.c) in the direct write optimization feature in the pipe impleme…
published 2009-06-18 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1930
- cvss
- 4.9
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
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.
Patch / fix
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- security.freebsd.org http://security.freebsd.org/patches/SA-09:09/pipe.patch referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:C/I:N/A:N |
Classification
- Weakness
-
- CWE-189 Numeric Errors
References
-
security.freebsd.org
/advisories/FreeBSD-SA-09:09.pipe.asc
vendor-advisory, patch
-
security.freebsd.org
/patches/SA-09:09/pipe.patch
exploit, vendor-advisory
-
secunia.com
/advisories/35398
third-party-advisory, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/51109
vdb-entry
-
securityfocus.com
/bid/35279
vdb-entry
-
osvdb.org
/55044
vdb-entry
-
securitytracker.com
/id?1022365
vdb-entry
Sources
- CVE List CVE-2009-1935
- NVD CVE-2009-1935
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