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Fencer Intel
low 3.3

CVE-2011-1585 json

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between…

published 2013-06-08 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1585

cvss
3.3
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 42%
public exploits
0
none known

Summary

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between users and sessions, which allows local users to bypass CIFS share authentication by leveraging a mount of a share by a different user.

Patch / fix

  • linux linux_kernel 2.6.36
  • 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-rt enterprise mrg 2 2.6.33.9-rt31.75.el6rt
  • kernel-rt-trace enterprise mrg 2 2.6.33.9-rt31.75.el6rt
  • kernel-rt-vanilla enterprise mrg 2 2.6.33.9-rt31.75.el6rt

red hat advisories RHSA-2011:1386RHSA-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-2011-1585 updated cvss 3.3

kernel: cifs session reuse

  • Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • 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-kdump 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 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 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

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/4ff67b720c02c36e54d55b88c2931879b7db1cd2 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.3 AV:L/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
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.