CVE-2007-3843
The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing…
Does this matter?
Lower severity and a low EPSS score (2.62%). Track it; it rarely justifies an emergency change on its own.
Description
The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 2.62% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
EPSS 2.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595
- http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1
- http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
- http://secunia.com/advisories/26366
- http://secunia.com/advisories/26647
- http://secunia.com/advisories/26760
- http://secunia.com/advisories/27436
- http://secunia.com/advisories/27747
- http://secunia.com/advisories/27912
- http://secunia.com/advisories/28806
- http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
- http://www.debian.org/security/2007/dsa-1363
- http://www.redhat.com/support/errata/RHSA-2007-0705.html
- http://www.redhat.com/support/errata/RHSA-2007-0939.html
- http://www.securityfocus.com/bid/25244
- http://www.ubuntu.com/usn/usn-510-1
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9670
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246595
- http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.23-rc1
- http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
- http://secunia.com/advisories/26366
- http://secunia.com/advisories/26647
- http://secunia.com/advisories/26760
- http://secunia.com/advisories/27436
- http://secunia.com/advisories/27747
- http://secunia.com/advisories/27912
- http://secunia.com/advisories/28806
- http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.