kernel: ext4: ext4_group_add() missing initialisation issue
Published Feb 27, 2009
4.9
MEDIUMCVSS 2.0
EPSS 0.41%
Description
The ext4_group_add function in fs/ext4/resize.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not properly initialize the group descriptor during a resize (aka resize2fs) operation, which might allow local users to cause a denial of service (OOPS) by arranging for crafted values to be present in available memory.
Affected products
No data.
- 2.6.27
- 2.6.27.1
- 2.6.27.2
- 2.6.27.3
- 2.6.27.4
- 2.6.27.5
- 2.6.27.6
- 2.6.27.7
- 2.6.27.8
- 2.6.27.9
- 2.6.27.10
- 2.6.27.11
- 2.6.27.12
- 2.6.27.13
- 2.6.27.14
- 2.6.27.15
- 2.6.27.16
- 2.6.27.17
- 2.6.27.18
- 2.6.28
- 2.6.28.1
- 2.6.28.2
- 2.6.28.3
- 2.6.28.4
- 2.6.28.5
- 2.6.28.6
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-164.el5
Fixed · RHSA-2009:1243
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-164.el5 | Fixed | RHSA-2009:1243 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.41% (0.00408) | 32.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00408) | 32.27th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00061) | 16.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (22)
- http://bugzilla.kernel.org/show_bug.cgi?id=12433 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fdff73f094e7220602cc3f8959c7230517976412 x_refsource_CONFIRM
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19 x_refsource_CONFIRM
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7 x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2009-1243.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/34394 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34981 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/36562 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2009/dsa-1749 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2009/dsa-1787 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.ubuntu.com/usn/usn-751-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2009/0509 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-0745 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=487929 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-0745
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10942 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7765 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-0745
Change history (0)
No recorded changes yet.