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CVE-2006-1856
Certain modifications to the Linux kernel 2.6.16 and earlier do not add the appropriate Linux Security Modules (LSM) file_permission hooks…
- 7.5HighCVSS base score
- 3.1%Exploitation in 30 daysEPSS · top 12% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Certain modifications to the Linux kernel 2.6.16 and earlier do not add the appropriate Linux Security Modules (LSM) file_permission hooks to the (1) readv and (2) writev functions, which might allow attackers to bypass intended access restrictions.
Timeline
ID reserved
By redhat
- 30 days later
· 30 days later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 3.1% · top 12% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
16
- http://support.avaya.com/elmodocs2/security/ASA-2006-161.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2006:0493 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- oval:org.mitre.oval:def:9927 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- [linux-security-module] 20050928 readv/writev syscalls are not checked by lsm (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 20716 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 21745 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-302-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- MDKSA-2006:123 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [linux-kernel] 20060426 [PATCH] LSM: add missing hook to do_compat_readv_writev() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=191524 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 25747 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 21045 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20237 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 22093 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1184 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 18105 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-1856 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-1856)Record last updated .