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Fencer Intel
medium 4.9

CVE-2011-1593 json

Multiple integer overflows in the next_pidmap function in kernel/pid.c in the Linux kernel before 2.6.38.4 allow local users to cause a den…

published 2011-05-03 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1593

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Multiple integer overflows in the next_pidmap function in kernel/pid.c in the Linux kernel before 2.6.38.4 allow local users to cause a denial of service (system crash) via a crafted (1) getdents or (2) readdir system call.

Patch / fix

  • linux linux_kernel 2.6.38.4
  • kernel RHEL 6 2.6.32-131.12.1.el6
  • perf RHEL 6 2.6.32-131.12.1.el6
  • kernel-kdump RHEL 6 2.6.32-131.12.1.el6
  • kernel-firmware RHEL 6 2.6.32-131.12.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-131.12.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-131.12.1.el6

red hat advisories RHSA-2011:1189RHSA-2011:0927RHSA-2011:1253

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-2011-1593 updated cvss 4.7

kernel: proc: signedness issue in next_pidmap()

  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel 2.6.18-238.19.1.el5, kernel-PAE 2.6.18-238.19.1.el5, kernel-xen 2.6.18-238.19.1.el5, kernel-kdump 2.6.18-238.19.1.el5, kernel-debuginfo-common 2.6.18-238.19.1.el5
    fixed: vendor fix RHSA-2011:0927
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.12.1.el6, kernel 2.6.32-131.12.1.el6, kernel-kdump 2.6.32-131.12.1.el6, kernel-firmware 2.6.32-131.12.1.el6, kernel-bootwrapper 2.6.32-131.12.1.el6, kernel-debuginfo-common-i686 2.6.32-131.12.1.el6, +3 more
    fixed: vendor fix RHSA-2011:1189
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 2.6.33.9-rt31.75.el6rt, kernel-rt-trace 2.6.33.9-rt31.75.el6rt, kernel-rt-vanilla 2.6.33.9-rt31.75.el6rt, kernel-rt-firmware 2.6.33.9-rt31.75.el6rt, kernel-rt-debuginfo-common-x86_64 2.6.33.9-rt31.75.el6rt
    fixed: vendor fix RHSA-2011:1253
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel-headers 2.6.18-238.19.1.el5
    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

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • groups.google.com http://groups.google.com/group/fa.linux.kernel/msg/4a28ecb7f755a88d?dmode=source 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
  • CWE-190 Integer Overflow or Wraparound
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.