CVE catalog
CVE-2007-3731
fai-kernels linux-2.6 user-mode-linux - several vulnerabilities
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.51% · Oct 25, 2026
The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function. NULL pointer dereference triggered by ptrace This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12etch1 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12etch2 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch1 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch2 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch3 | fixed |
| Debian | fai-kernels | 4.0 | 1.17 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch1 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch2 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch3 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch4 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch5 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17etch1 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch.13etch3 | fixed |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch1 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch2 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch3 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch4 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch.13etch3 | fixed |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12etch1 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-12etch2 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch1 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch2 | vulnerable |
| Debian | linux-2.6 | 4.0 | 2.6.18.dfsg.1-13etch3 | fixed |
| Debian | fai-kernels | 4.0 | 1.17 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch1 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch2 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch3 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch4 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch5 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17etch1 | vulnerable |
| Debian | fai-kernels | 4.0 | 1.17+etch.13etch3 | fixed |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch1 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch2 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch3 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch4 | vulnerable |
| Debian | user-mode-linux | 4.0 | 2.6.18-1um-2etch.13etch3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | linux-2.6 | deb | 4.0 | 2.6.18.dfsg.1-13etch3 | Not reported | DSA-1378-2 | Not reported |
| Debian | fai-kernels | deb | 4.0 | 1.17+etch.13etch3 | Not reported | DSA-1378-2 | Not reported |
| Debian | user-mode-linux | deb | 4.0 | 2.6.18-1um-2etch.13etch3 | Not reported | DSA-1378-2 | Not reported |
| Debian | linux-2.6 | deb | 4.0 | 2.6.18.dfsg.1-13etch3 | Not reported | DSA-1378-1 | Not reported |
| Debian | fai-kernels | deb | 4.0 | 1.17+etch.13etch3 | Not reported | DSA-1378-1 | Not reported |
| Debian | user-mode-linux | deb | 4.0 | 2.6.18-1um-2etch.13etch3 | Not reported | DSA-1378-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: