kernel: bug in GFS/GFS2 locking code leads to dos
Published Mar 16, 2010
4.9
MEDIUMCVSS 2.0
EPSS 0.56%
Description
The gfs2_lock function in the Linux kernel before 2.6.34-rc1-next-20100312, and the gfs_lock function in the Linux kernel on Red Hat Enterprise Linux (RHEL) 5 and 6, does not properly remove POSIX locks on files that are setgid without group-execute permission, which allows local users to cause a denial of service (BUG and system crash) by locking a file on a (1) GFS or (2) GFS2 filesystem, and then changing this file's permissions.
Affected products
No data.
Configuration 1
- ≤ 2.6.33.1
Configuration 2
- 5.0
- 5.0
- 6.0
No data.
Red Hat Enterprise Linux 5
gfs-kmod-0:0.1.34-12.el5
Fixed · RHSA-2010:0291
Red Hat Enterprise Linux 5
kernel-0:2.6.18-194.el5
Fixed · RHSA-2010:0178
Red Hat Enterprise Linux 5.4.Z - Server Only
gfs-kmod-0:0.1.34-2.el5_4.3
Fixed · RHSA-2010:0521
Red Hat Enterprise Linux 5.4.Z - Server Only
kernel-0:2.6.18-164.17.1.el5
Fixed · RHSA-2010:0380
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | gfs-kmod-0:0.1.34-12.el5 | Fixed | RHSA-2010:0291 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-194.el5 | Fixed | RHSA-2010:0178 |
| Red Hat Enterprise Linux 5.4.Z - Server Only | gfs-kmod-0:0.1.34-2.el5_4.3 | Fixed | RHSA-2010:0521 |
| Red Hat Enterprise Linux 5.4.Z - Server Only | kernel-0:2.6.18-164.17.1.el5 | Fixed | RHSA-2010:0380 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG, as it did not include support for the GFS and GFS2 file systems. For the GFS issue, it was addressed in Red Hat Enterprise Linux 3 in the gfs package, 4 in the GFS-kernel package, and 5 in the gfs-kmod package, via RHSA-2010:9493, RHSA-2010:9494, RHSA-2010:0291 respectively. For the GFS2 issue, it was addressed in Red Hat Enterprise Linux 5 in the kernel package via RHSA-2010:0178.
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 1, 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 1, 2026 | 0.56% (0.00560) | 44.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.58% (0.00582) | 43.00th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00073) | 19.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (15)
- http://lkml.org/lkml/2010/3/11/269 mailing-listx_refsource_MLISTPatchThird Party Advisory
- http://secunia.com/advisories/39830 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://securitytracker.com/id?1023809 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.debian.org/security/2010/dsa-2053 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.34-rc1-next-20100312.bz2 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:066 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.openwall.com/lists/oss-security/2010/03/12/1 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0330.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0380.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0521.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2010-0727 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=570863 x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2010-0727
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11392 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2010-0727
Change history (0)
No recorded changes yet.