Skip to content
Fencer Vulns
high 7.8

CVE-2008-4934 json

The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from…

published 2008-11-05 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-4913

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from the read_mapping_page function before calling kmap, which allows attackers to cause a denial of service (system crash) via a crafted hfsplus filesystem image.

Patch / fix

  • linux linux_kernel 2.6.28
  • kernel RHEL 5 2.6.18-128.1.1.el5
  • kernel-PAE RHEL 5 2.6.18-128.1.1.el5
  • kernel-xen RHEL 5 2.6.18-128.1.1.el5
  • kernel-kdump RHEL 5 2.6.18-128.1.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-128.1.1.el5
  • kernel RHEL 4 2.6.9-78.0.13.EL
  • kernel-smp RHEL 4 2.6.9-78.0.13.EL
  • kernel-xenU RHEL 4 2.6.9-78.0.13.EL

red hat advisories RHSA-2009:0264RHSA-2009:0014

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-2008-4934 updated

kernel: hfsplus: check read_mapping_page() return value

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-128.1.1.el5, kernel-PAE 2.6.18-128.1.1.el5, kernel-xen 2.6.18-128.1.1.el5, kernel-kdump 2.6.18-128.1.1.el5, kernel-debuginfo-common 2.6.18-128.1.1.el5
    fixed: vendor fix RHSA-2009:0264
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-128.1.1.el5, kernel-PAE 2.6.18-128.1.1.el5, kernel-xen 2.6.18-128.1.1.el5, kernel-kdump 2.6.18-128.1.1.el5, kernel-debuginfo-common 2.6.18-128.1.1.el5
    fixed: vendor fix RHSA-2009:0264
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014

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

3.29% 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 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
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.