CVE-2007-3843 Security feature bypass in n/a

What is CVE-2007-3843?

CVE-2007-3843 is a medium-severity vulnerability in Linux kernel, published on 9 Aug 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Which versions are affected by CVE-2007-3843?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2007-3843?

Upgrade to a fixed version.

Is CVE-2007-3843 being exploited?

There is no known exploitation of CVE-2007-3843 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xmg2-6455-627q.