What is CVE-2011-3637?

CVE-2011-3637 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2012-05-17.

How severe is CVE-2011-3637?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2011-3637

The m_stop function in fs/proc/task_mmu.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (OOPS) via vectors that trigger an m_start error.

Published 2012-05-17 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel
Red Hat Enterprise Linux — versions 6.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
www.openwall.com/lists/oss-security/2012/02/06/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
github.com/torvalds/linux/commit/76597cd31470fa130784c78fadb4dab2e624a723 (Patch, Third Party Advisory)
ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 (Broken Link)
git.kernel.org/

Frequently asked questions

What is CVE-2011-3637?: CVE-2011-3637 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2012-05-17.
How severe is CVE-2011-3637?: Medium severity. CVSS v3 base score is 5.5 out of 10.