Skip to content
Fencer Vulns
high 7.1

CVE-2007-4997 json

Integer underflow in the ieee80211_rx function in net/ieee80211/ieee80211_rx.c in the Linux kernel 2.6.x before 2.6.23 allows remote attack…

published 2007-11-06 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4978

cvss
7.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Integer underflow in the ieee80211_rx function in net/ieee80211/ieee80211_rx.c in the Linux kernel 2.6.x before 2.6.23 allows remote attackers to cause a denial of service (crash) via a crafted SKB length value in a runt IEEE 802.11 frame when the IEEE80211_STYPE_QOS_DATA flag is set, aka an "off-by-two error."

Patch / fix

  • kernel RHEL 4 2.6.9-67.0.1.EL
  • kernel-smp RHEL 4 2.6.9-67.0.1.EL
  • kernel-xenU RHEL 4 2.6.9-67.0.1.EL
  • kernel-hugemem RHEL 4 2.6.9-67.0.1.EL
  • kernel-largesmp RHEL 4 2.6.9-67.0.1.EL
  • kernel RHEL 5 2.6.18-53.1.4.el5
  • kernel-PAE RHEL 5 2.6.18-53.1.4.el5
  • kernel-xen RHEL 5 2.6.18-53.1.4.el5

red hat advisories RHSA-2007:1104RHSA-2007:0993

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-2007-4997 updated

kernel ieee80211 off-by-two integer underflow

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-53.1.4.el5, kernel-PAE 2.6.18-53.1.4.el5, kernel-xen 2.6.18-53.1.4.el5, kernel-kdump 2.6.18-53.1.4.el5, kernel-debuginfo-common 2.6.18-53.1.4.el5
    fixed: vendor fix RHSA-2007:0993
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-67.0.1.EL, kernel-smp 2.6.9-67.0.1.EL, kernel-xenU 2.6.9-67.0.1.EL, kernel-hugemem 2.6.9-67.0.1.EL, kernel-largesmp 2.6.9-67.0.1.EL
    fixed: vendor fix RHSA-2007:1104
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-53.1.4.el5, kernel-PAE 2.6.18-53.1.4.el5, kernel-xen 2.6.18-53.1.4.el5, kernel-kdump 2.6.18-53.1.4.el5, kernel-debuginfo-common 2.6.18-53.1.4.el5
    fixed: vendor fix RHSA-2007:0993
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-67.0.1.EL, kernel-smp 2.6.9-67.0.1.EL, kernel-xenU 2.6.9-67.0.1.EL, kernel-hugemem 2.6.9-67.0.1.EL, kernel-largesmp 2.6.9-67.0.1.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-67.0.1.EL, kernel-smp 2.6.9-67.0.1.EL, kernel-xenU 2.6.9-67.0.1.EL, kernel-hugemem 2.6.9-67.0.1.EL, kernel-largesmp 2.6.9-67.0.1.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-67.0.1.EL, kernel-smp 2.6.9-67.0.1.EL, kernel-xenU 2.6.9-67.0.1.EL, kernel-hugemem 2.6.9-67.0.1.EL, kernel-largesmp 2.6.9-67.0.1.EL
    fixed: vendor fix RHSA-2007:1104

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

3.24% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness
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.