Read the docs
TI-2009-00712 Aliases CVE-2009-0747GHSA-2vw5-8crq-9vmf

The ext4_isize function in fs/ext4/ext4.h in the Linux kernel 2.6.27 before 2.6.27.19 and…

Priority LOW 23CWE-399Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.

Summary

The ext4_isize function in fs/ext4/ext4.h in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 uses the i_size_high structure member during operations on arbitrary types of files, which allows local users to cause a denial of service (CPU consumption and error-message flood) by attempting to mount a crafted ext4 filesystem.

Why it matters now

EPSS 0.00412 35th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 42

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:2.6.27:*:*:*:*:*:*:*2.6.27VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc1:*:*:*:*:*:*2.6.27 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc2:*:*:*:*:*:*2.6.27 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc3:*:*:*:*:*:*2.6.27 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc4:*:*:*:*:*:*2.6.27 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc5:*:*:*:*:*:*2.6.27 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc6:*:*:*:*:*:*2.6.27 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc7:*:*:*:*:*:*2.6.27 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc8:*:*:*:*:*:*2.6.27 rc8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27:rc9:*:*:*:*:*:*2.6.27 rc9VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:*:*:*:*:*:*:* Versions 2.6.27 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc1:*:*:*:*:*:* Versions 2.6.27 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc2:*:*:*:*:*:* Versions 2.6.27 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc3:*:*:*:*:*:* Versions 2.6.27 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc4:*:*:*:*:*:* Versions 2.6.27 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc5:*:*:*:*:*:* Versions 2.6.27 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc6:*:*:*:*:*:* Versions 2.6.27 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc7:*:*:*:*:*:* Versions 2.6.27 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc8:*:*:*:*:*:* Versions 2.6.27 rc8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27:rc9:*:*:*:*:*:* Versions 2.6.27 rc9 Vulnerable ·Linux
Show 32 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:2.6.27.1:*:*:*:*:*:*:*2.6.27.1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.2:*:*:*:*:*:*:*2.6.27.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.3:*:*:*:*:*:*:*2.6.27.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.4:*:*:*:*:*:*:*2.6.27.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.5:*:*:*:*:*:*:*2.6.27.5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.6:*:*:*:*:*:*:*2.6.27.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.7:*:*:*:*:*:*:*2.6.27.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.8:*:*:*:*:*:*:*2.6.27.8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.9:*:*:*:*:*:*:*2.6.27.9VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.10:*:*:*:*:*:*:*2.6.27.10VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.11:*:*:*:*:*:*:*2.6.27.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.12:*:*:*:*:*:*:*2.6.27.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.13:*:*:*:*:*:*:*2.6.27.13VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.14:*:*:*:*:*:*:*2.6.27.14VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.15:*:*:*:*:*:*:*2.6.27.15VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.16:*:*:*:*:*:*:*2.6.27.16VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.17:*:*:*:*:*:*:*2.6.27.17VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.27.18:*:*:*:*:*:*:*2.6.27.18VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:*:*:*:*:*:*:*2.6.28VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc1:*:*:*:*:*:*2.6.28 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc2:*:*:*:*:*:*2.6.28 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc3:*:*:*:*:*:*2.6.28 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc4:*:*:*:*:*:*2.6.28 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc5:*:*:*:*:*:*2.6.28 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc6:*:*:*:*:*:*2.6.28 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28:rc7:*:*:*:*:*:*2.6.28 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.1:*:*:*:*:*:*:*2.6.28.1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.2:*:*:*:*:*:*:*2.6.28.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.3:*:*:*:*:*:*:*2.6.28.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.4:*:*:*:*:*:*:*2.6.28.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.5:*:*:*:*:*:*:*2.6.28.5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.28.6:*:*:*:*:*:*:*2.6.28.6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.1:*:*:*:*:*:*:* Versions 2.6.27.1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.2:*:*:*:*:*:*:* Versions 2.6.27.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.3:*:*:*:*:*:*:* Versions 2.6.27.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.4:*:*:*:*:*:*:* Versions 2.6.27.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.5:*:*:*:*:*:*:* Versions 2.6.27.5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.6:*:*:*:*:*:*:* Versions 2.6.27.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.7:*:*:*:*:*:*:* Versions 2.6.27.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.8:*:*:*:*:*:*:* Versions 2.6.27.8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.9:*:*:*:*:*:*:* Versions 2.6.27.9 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.10:*:*:*:*:*:*:* Versions 2.6.27.10 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.11:*:*:*:*:*:*:* Versions 2.6.27.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.12:*:*:*:*:*:*:* Versions 2.6.27.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.13:*:*:*:*:*:*:* Versions 2.6.27.13 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.14:*:*:*:*:*:*:* Versions 2.6.27.14 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.15:*:*:*:*:*:*:* Versions 2.6.27.15 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.16:*:*:*:*:*:*:* Versions 2.6.27.16 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.17:*:*:*:*:*:*:* Versions 2.6.27.17 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.27.18:*:*:*:*:*:*:* Versions 2.6.27.18 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:*:*:*:*:*:*:* Versions 2.6.28 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc1:*:*:*:*:*:* Versions 2.6.28 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc2:*:*:*:*:*:* Versions 2.6.28 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc3:*:*:*:*:*:* Versions 2.6.28 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc4:*:*:*:*:*:* Versions 2.6.28 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc5:*:*:*:*:*:* Versions 2.6.28 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc6:*:*:*:*:*:* Versions 2.6.28 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28:rc7:*:*:*:*:*:* Versions 2.6.28 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.1:*:*:*:*:*:*:* Versions 2.6.28.1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.2:*:*:*:*:*:*:* Versions 2.6.28.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.3:*:*:*:*:*:*:* Versions 2.6.28.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.4:*:*:*:*:*:*:* Versions 2.6.28.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.5:*:*:*:*:*:*:* Versions 2.6.28.5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.28.6:*:*:*:*:*:*:* Versions 2.6.28.6 Vulnerable ·Linux

Remediation

Red Hat 1 advisory

  • RHSA-2009:1243 Released 2009-09-02 · Red Hat rating Important
    Red Hat Enterprise Linux 5.4 kernel security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-164.el5, kernel-2.6.18-164.el5.ia64, kernel-PAE-2.6.18-164.el5 +18
    • Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-164.el5, kernel-PAE-2.6.18-164.el5, kernel-PAE-devel-2.6.18-164.el5 +8

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:1243
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:1243

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-0747
  2. 2026-10-03 Alias added: GHSA-2vw5-8crq-9vmf

References

Patch 1

Advisory 4

Other 7

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences