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Fencer Vulns
high 7.8

CVE-2008-2136 json

Memory leak in the ipip6_rcv function in net/ipv6/sit.c in the Linux kernel 2.4 before 2.4.36.5 and 2.6 before 2.6.25.3 allows remote attac…

published 2008-05-16 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-2133

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Memory leak in the ipip6_rcv function in net/ipv6/sit.c in the Linux kernel 2.4 before 2.4.36.5 and 2.6 before 2.6.25.3 allows remote attackers to cause a denial of service (memory consumption) via network traffic to a Simple Internet Transition (SIT) tunnel interface, related to the pskb_may_pull and kfree_skb functions, and management of an skb reference count.

Patch / fix

  • linux linux_kernel 2.4.36.5, 2.6.25.3
  • kernel RHEL 2.1 2.4.9-e.74
  • kernel-smp RHEL 2.1 2.4.9-e.74
  • kernel-BOOT RHEL 2.1 2.4.9-e.74
  • kernel-source RHEL 2.1 2.4.9-e.74
  • kernel-summit RHEL 2.1 2.4.9-e.74
  • kernel-enterprise RHEL 2.1 2.4.9-e.74
  • kernel RHEL 3 2.4.21-58.EL
  • kernel-smp RHEL 3 2.4.21-58.EL

red hat advisories RHSA-2009:0001RHSA-2008:0973RHSA-2008:0787RHSA-2008:0612RHSA-2008:0607RHSA-2008:0585

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-2008-2136 updated

kernel: sit memory leak

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-74.el5rt, kernel-rt-trace 2.6.24.7-74.el5rt, kernel-rt-vanilla 2.6.24.7-74.el5rt, kernel-rt-debuginfo-common 2.6.24.7-74.el5rt
    fixed: vendor fix RHSA-2008:0585
  • Red Hat Desktop version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-92.1.10.el5, kernel-PAE 2.6.18-92.1.10.el5, kernel-xen 2.6.18-92.1.10.el5, kernel-kdump 2.6.18-92.1.10.el5, kernel-debuginfo-common 2.6.18-92.1.10.el5
    fixed: vendor fix RHSA-2008:0612
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 kernel 2.4.9-e.74, kernel 2.4.18-e.67, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-smp 2.4.18-e.67, kernel-source 2.4.9-e.74, +3 more
    fixed: vendor fix RHSA-2008:0787
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-67.0.22.EL, kernel-smp 2.6.9-67.0.22.EL, kernel-xenU 2.6.9-67.0.22.EL, kernel-hugemem 2.6.9-67.0.22.EL, kernel-largesmp 2.6.9-67.0.22.EL
    fixed: vendor fix RHSA-2008:0607
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-92.1.10.el5, kernel-PAE 2.6.18-92.1.10.el5, kernel-xen 2.6.18-92.1.10.el5, kernel-kdump 2.6.18-92.1.10.el5, kernel-debuginfo-common 2.6.18-92.1.10.el5
    fixed: vendor fix RHSA-2008:0612
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-67.0.22.EL, kernel-smp 2.6.9-67.0.22.EL, kernel-xenU 2.6.9-67.0.22.EL, kernel-hugemem 2.6.9-67.0.22.EL, kernel-largesmp 2.6.9-67.0.22.EL
    fixed: vendor fix RHSA-2008:0607
show 7 more
  • Red Hat Enterprise Linux ES version 2.1 kernel 2.4.9-e.74, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-source 2.4.9-e.74, kernel-summit 2.4.9-e.74, kernel-enterprise 2.4.9-e.74
    fixed: vendor fix RHSA-2009:0001
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-67.0.22.EL, kernel-smp 2.6.9-67.0.22.EL, kernel-xenU 2.6.9-67.0.22.EL, kernel-hugemem 2.6.9-67.0.22.EL, kernel-largesmp 2.6.9-67.0.22.EL
    fixed: vendor fix RHSA-2008:0607
  • Red Hat Enterprise Linux WS version 2.1 kernel 2.4.9-e.74, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-source 2.4.9-e.74, kernel-summit 2.4.9-e.74, kernel-enterprise 2.4.9-e.74
    fixed: vendor fix RHSA-2009:0001
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-67.0.22.EL, kernel-smp 2.6.9-67.0.22.EL, kernel-xenU 2.6.9-67.0.22.EL, kernel-hugemem 2.6.9-67.0.22.EL, kernel-largesmp 2.6.9-67.0.22.EL
    fixed: vendor fix RHSA-2008:0607
  • Red Hat Linux Advanced Workstation 2.1 kernel 2.4.18-e.67, kernel-smp 2.4.18-e.67, kernel-source 2.4.18-e.67
    fixed: vendor fix RHSA-2008:0787

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

4.93% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Vulns 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.