Skip to content
Fencer Intel
critical 10.0

CVE-2010-2521 in the critical feed json

Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remo…

published 16y ago modified 4mo ago also EUVD-2010-2525

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.0%
EPSS 9.0% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions.

Patch / fix

  • kernel RHEL 5 2.6.18-194.11.1.el5
  • kernel-PAE RHEL 5 2.6.18-194.11.1.el5
  • kernel-xen RHEL 5 2.6.18-194.11.1.el5
  • kernel-kdump RHEL 5 2.6.18-194.11.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-194.11.1.el5
  • kernel-rt enterprise mrg 1 2.6.24.7-161.el5rt
  • kernel-rt-trace enterprise mrg 1 2.6.24.7-161.el5rt
  • kernel-rt-vanilla enterprise mrg 1 2.6.24.7-161.el5rt

red hat advisories RHSA-2010:0610RHSA-2010:0631RHSA-2010:0907RHSA-2010:0893RHSA-2010:0606

Is CVE-2010-2521 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2010-2521 updated cvss 8.3

kernel: nfsd4: bug in read_buf

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-161.el5rt, kernel-rt-trace 2.6.24.7-161.el5rt, kernel-rt-vanilla 2.6.24.7-161.el5rt, kernel-rt-firmware 2.6.24.7-161.el5rt, kernel-rt-debuginfo-common 2.6.24.7-161.el5rt
    fixed: vendor fix RHSA-2010:0631
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-194.11.1.el5, kernel-PAE 2.6.18-194.11.1.el5, kernel-xen 2.6.18-194.11.1.el5, kernel-kdump 2.6.18-194.11.1.el5, kernel-debuginfo-common 2.6.18-194.11.1.el5
    fixed: vendor fix RHSA-2010:0610
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-89.0.28.EL, kernel-smp 2.6.9-89.0.28.EL, kernel-xenU 2.6.9-89.0.28.EL, kernel-hugemem 2.6.9-89.0.28.EL, kernel-largesmp 2.6.9-89.0.28.EL
    fixed: vendor fix RHSA-2010:0606
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-194.11.1.el5, kernel-PAE 2.6.18-194.11.1.el5, kernel-xen 2.6.18-194.11.1.el5, kernel-kdump 2.6.18-194.11.1.el5, kernel-debuginfo-common 2.6.18-194.11.1.el5
    fixed: vendor fix RHSA-2010:0610
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-89.0.28.EL, kernel-smp 2.6.9-89.0.28.EL, kernel-xenU 2.6.9-89.0.28.EL, kernel-hugemem 2.6.9-89.0.28.EL, kernel-largesmp 2.6.9-89.0.28.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-89.0.28.EL, kernel-smp 2.6.9-89.0.28.EL, kernel-xenU 2.6.9-89.0.28.EL, kernel-hugemem 2.6.9-89.0.28.EL, kernel-largesmp 2.6.9-89.0.28.EL
    fixed: vendor fix RHSA-2010:0606
  • Red Hat Enterprise Linux EUS (v. 5.3 server) kernel 2.6.18-128.26.1.el5, kernel-PAE 2.6.18-128.26.1.el5, kernel-xen 2.6.18-128.26.1.el5, kernel-kdump 2.6.18-128.26.1.el5, kernel-debuginfo-common 2.6.18-128.26.1.el5
    fixed: vendor fix RHSA-2010:0893
  • Red Hat Enterprise Linux EUS (v. 5.4 server) kernel 2.6.18-164.30.1.el5, kernel-PAE 2.6.18-164.30.1.el5, kernel-xen 2.6.18-164.30.1.el5, kernel-kdump 2.6.18-164.30.1.el5, kernel-debuginfo-common 2.6.18-164.30.1.el5
    fixed: vendor fix RHSA-2010:0907
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-89.0.28.EL, kernel-smp 2.6.9-89.0.28.EL, kernel-xenU 2.6.9-89.0.28.EL, kernel-hugemem 2.6.9-89.0.28.EL, kernel-largesmp 2.6.9-89.0.28.EL
    fixed: vendor fix RHSA-2010:0606

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

8.98% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
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.