CVE-2009-2849 Null dereference in n/a
Medium 4.7
Published
Updated
Check this codebase for CVE-2009-2849 and fix it if it is affected.
What it is: CVE-2009-2849 is a medium-severity vulnerability in Linux kernel, published on 18 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2009-2849 in the wild and no public exploit code.
Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2009-2849/ (Markdown: https://insights.sbomify.com/CVE-2009-2849/index.md)
Local attackers can cause a denial of service via NULL pointer dereference in the Linux kernel md driver if sysfs is writable.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-2849?
CVE-2009-2849 is a medium-severity vulnerability in Linux kernel, published on 18 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The md driver (drivers/md/md.c) in the Linux kernel before 2.6.30.2 might allow local users to cause a denial of service (NULL pointer dereference) via vectors related to "suspend_* sysfs attributes" and the (1) suspend_lo_store or (2) suspend_hi_store functions. NOTE: this is only a vulnerability when sysfs is writable by an attacker.
Which versions are affected by CVE-2009-2849?
It affects 1 product.
Linux distribution packages (33)
kernel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-doc Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-headers Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-164.2.1.el5 |
kernel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-doc Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-headers Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-kdump Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-kdump-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-kdump-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-164.2.1.el5 |
Products include Linux kernel.
How do I fix CVE-2009-2849?
Upgrade to a fixed version.
Is CVE-2009-2849 being exploited?
There is no known exploitation of CVE-2009-2849 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-xc37-2m2p-wghm, RHSA-2009:1455.