CVE-2009-2695
Description
The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointer dereference vulnerabilities, related to (1) the default configuration of the allow_unconfined_mmap_low boolean in SELinux on Red Hat Enterprise Linux (RHEL) 5, (2) an error that causes allow_unconfined_mmap_low to be ignored in the unconfined_t domain, (3) lack of a requirement for the CAP_SYS_RAWIO capability for these mmap operations, and (4) interaction between the mmap_min_addr protection mechanism and certain application programs.
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v ≤ 2.6.31, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5, 2.6.6, 2.6.7, 2.6.8, 2.6.8.1, 2.6.9, 2.6.10, 2.6.11, 2.6.11.1, 2.6.11.2, 2.6.11.3, 2.6.11.4, 2.6.11.5, 2.6.11.6, 2.6.11.7, 2.6.11.8, 2.6.11.9, 2.6.11.10, 2.6.11.11, 2.6.11.12, 2.6.12, 2.6.12.1, 2.6.12.2, 2.6.12.3, 2.6.12.4, 2.6.12.5, 2.6.12.6, 2.6.13, 2.6.13.1, 2.6.13.2, 2.6.13.3, 2.6.13.4, 2.6.13.5, 2.6.14, 2.6.14.1, 2.6.14.2, 2.6.14.3, 2.6.14.4, 2.6.14.5, 2.6.14.6, 2.6.14.7, 2.6.15, 2.6.15.1, 2.6.15.2, 2.6.15.3, 2.6.15.4, 2.6.15.5, 2.6.15.6, 2.6.15.7, 2.6.16, 2.6.16.1, 2.6.16.2, 2.6.16.3, 2.6.16.4, 2.6.16.5, 2.6.16.6, 2.6.16.7, 2.6.16.8, 2.6.16.9, 2.6.16.10, 2.6.16.11, 2.6.16.12, 2.6.16.13, 2.6.16.14, 2.6.16.15, 2.6.16.16, 2.6.16.17, 2.6.16.18, 2.6.16.19, 2.6.16.20, 2.6.16.21, 2.6.16.22, 2.6.16.23, 2.6.16.24, 2.6.16.25, 2.6.16.26, 2.6.16.27, 2.6.16.28, 2.6.16.29, 2.6.16.30, 2.6.16.31, 2.6.16.32, 2.6.16.33, 2.6.16.34, 2.6.16.35, 2.6.16.36, 2.6.16.37, 2.6.16.38, 2.6.16.39, 2.6.16.40, 2.6.16.41, 2.6.16.42, 2.6.16.43, 2.6.16.44, 2.6.16.45, 2.6.16.46, 2.6.16.47, 2.6.16.48, 2.6.16.49, 2.6.16.50, 2.6.16.51, 2.6.16.52, 2.6.16.53, 2.6.16.54, 2.6.16.55, 2.6.16.56, 2.6.16.57, 2.6.16.58, 2.6.16.59, 2.6.16.60, 2.6.16.61, 2.6.16.62, 2.6.17, 2.6.17.1, 2.6.17.2, 2.6.17.3, 2.6.17.4, 2.6.17.5, 2.6.17.6, 2.6.17.7, 2.6.17.8, 2.6.17.9, 2.6.17.10, 2.6.17.11, 2.6.17.12, 2.6.17.13, 2.6.17.14, 2.6.18, 2.6.18.1, 2.6.18.2, 2.6.18.3, 2.6.18.4, 2.6.18.5, 2.6.18.6, 2.6.18.7, 2.6.18.8, 2.6.19, 2.6.19.1, 2.6.19.2, 2.6.19.3, 2.6.19.4, 2.6.19.5, 2.6.19.6, 2.6.19.7, 2.6.20, 2.6.20.1, 2.6.20.2, 2.6.20.3, 2.6.20.4, 2.6.20.5, 2.6.20.6, 2.6.20.7, 2.6.20.8, 2.6.20.9, 2.6.20.10, 2.6.20.11, 2.6.20.12, 2.6.20.13, 2.6.20.14, 2.6.20.15, 2.6.20.16, 2.6.20.17, 2.6.20.18, 2.6.20.19, 2.6.20.20, 2.6.20.21, 2.6.21, 2.6.21.1, 2.6.21.2, 2.6.21.3, 2.6.21.4, 2.6.21.5, 2.6.21.6, 2.6.21.7, 2.6.22, 2.6.22.1, 2.6.22.2, 2.6.22.3, 2.6.22.4, 2.6.22.5, 2.6.22.6, 2.6.22.7, 2.6.22.8, 2.6.22.9, 2.6.22.10, 2.6.22.11, 2.6.22.12, 2.6.22.13, 2.6.22.14, 2.6.22.15, 2.6.22.16, 2.6.22.17, 2.6.22.18, 2.6.22.19 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.