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Fencer Intel
medium 4.9

CVE-2011-3209 json

The div_long_long_rem implementation in include/asm-x86/div64.h in the Linux kernel before 2.6.26 on the x86 platform allows local users to…

published 2012-10-03 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3173

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

The div_long_long_rem implementation in include/asm-x86/div64.h in the Linux kernel before 2.6.26 on the x86 platform allows local users to cause a denial of service (Divide Error Fault and panic) via a clock_gettime system call.

Patch / fix

  • kernel RHEL 5 2.6.18-274.7.1.el5
  • kernel-PAE RHEL 5 2.6.18-274.7.1.el5
  • kernel-xen RHEL 5 2.6.18-274.7.1.el5
  • kernel-kdump RHEL 5 2.6.18-274.7.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-274.7.1.el5
  • kernel RHEL 5.6 EUS 2.6.18-238.28.1.el5
  • kernel-PAE RHEL 5.6 EUS 2.6.18-238.28.1.el5
  • kernel-xen RHEL 5.6 EUS 2.6.18-238.28.1.el5

red hat advisories RHSA-2011:1419RHSA-2011:1418RHSA-2011:1386

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-3209 updated cvss 4.9

kernel: panic occurs when clock_gettime() is called

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-274.7.1.el5, kernel-PAE 2.6.18-274.7.1.el5, kernel-xen 2.6.18-274.7.1.el5, kernel-kdump 2.6.18-274.7.1.el5, kernel-debuginfo-common 2.6.18-274.7.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-274.7.1.el5, kernel-PAE 2.6.18-274.7.1.el5, kernel-xen 2.6.18-274.7.1.el5, kernel-debuginfo-common 2.6.18-274.7.1.el5
    fixed: vendor fix RHSA-2011:1386
  • Red Hat Enterprise Linux EUS (v. 5.6 server) kernel 2.6.18-238.28.1.el5, kernel-PAE 2.6.18-238.28.1.el5, kernel-xen 2.6.18-238.28.1.el5, kernel-kdump 2.6.18-238.28.1.el5, kernel-debuginfo-common 2.6.18-238.28.1.el5
    fixed: vendor fix RHSA-2011:1419
  • Red Hat Enterprise Linux Long Life (v. 5.3 server) kernel 2.6.18-128.36.1.el5, kernel-PAE 2.6.18-128.36.1.el5, kernel-xen 2.6.18-128.36.1.el5, kernel-debuginfo-common 2.6.18-128.36.1.el5
    fixed: vendor fix RHSA-2011:1418
  • Red Hat Enterprise Linux (v. 5 server) kernel-headers 2.6.18-274.7.1.el5 Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux Desktop (v. 5 client) kernel-headers 2.6.18-274.7.1.el5 Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/f8bd2258e2d520dff28c855658bd24bdafb5102d referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=732878 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.