The kernfs_xread function in kernfs in NetBSD 1.6 through 2.1, and OpenBSD 3.8, does not properly validate file offsets against negative 32-bit values that occur as a result of truncation, which allows local users to read arbitrary kernel memory and gain privileges via the lseek system call
Published Jan 9, 2006
4.6
MEDIUMCVSS 2.0
EPSS 0.37%
Description
The kernfs_xread function in kernfs in NetBSD 1.6 through 2.1, and OpenBSD 3.8, does not properly validate file offsets against negative 32-bit values that occur as a result of truncation, which allows local users to read arbitrary kernel memory and gain privileges via the lseek system call.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00367) | 28.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00359) | 27.51th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00073) | 19.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.52th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.06% (0.00060) | 25.49th | v3 (v2023.03.01) |
| Jun 4, 2023 | 0.06% (0.00060) | 23.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-001.txt.asc vendor-advisoryx_refsource_NETBSD
- http://secunia.com/advisories/18388 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/18712 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securityreason.com/securityalert/405 third-party-advisoryx_refsource_SREASON
- http://www.osvdb.org/22293 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/archive/1/423827/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/16173 vdb-entryx_refsource_BIDPatch
- http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html x_refsource_MISCVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24035 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-001.txt.asc | vendor-advisoryx_refsource_NETBSD | |
| http://secunia.com/advisories/18388 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/18712 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securityreason.com/securityalert/405 | third-party-advisoryx_refsource_SREASON | |
| http://www.osvdb.org/22293 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/archive/1/423827/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/16173 | vdb-entryx_refsource_BIDPatch | |
| http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html | x_refsource_MISCVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/24035 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.