xorg-x11-server: lock file chmod change race condition
Published Jul 3, 2012
1.9
LOWCVSS 2.0
EPSS 0.60%
Description
The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to change the permissions of arbitrary files to 444, read those files, and possibly cause a denial of service (removed execution permission) via a symlink attack on a temporary lock file.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
xorg-x11-server-0:1.10.6-1.el6
Fixed · RHSA-2012:0939
Red Hat Enterprise Linux 4
xorg-x11
Will not fix
Red Hat Enterprise Linux 5
xorg-x11-server
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | xorg-x11-server-0:1.10.6-1.el6 | Fixed | RHSA-2012:0939 |
| Red Hat Enterprise Linux 4 | xorg-x11 | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | xorg-x11-server | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:M/Au:N/C:P/I:N/A:N
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.60% (0.00605) | 47.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.60% (0.00605) | 44.09th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.27% (0.00272) | 48.64th | 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 | 1.59% (0.01592) | 75.48th | v2 (v2022.01.01) |
| Mar 4, 2023 | 1.59% (0.01592) | 75.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.59% (0.01592) | 73.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.59% (0.01592) | 52.35th | v2 (v2022.01.01) |
References (10)
- http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4 x_refsource_CONFIRMPatch
- http://lists.freedesktop.org/archives/xorg-announce/2011-October/001744.html
- http://lists.freedesktop.org/archives/xorg/2011-October/053680.html mailing-listx_refsource_MLIST
- http://rhn.redhat.com/errata/RHSA-2012-0939.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/46460 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/49579 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-4029 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=745024 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-4029
- https://www.cve.org/CVERecord?id=CVE-2011-4029
| Link | Providers | Tags |
|---|---|---|
| http://cgit.freedesktop.org/xorg/xserver/commit/?id=b67581cf825940fdf52bf2e0af4330e695d724a4 | x_refsource_CONFIRMPatch | |
| http://lists.freedesktop.org/archives/xorg-announce/2011-October/001744.html | ||
| http://lists.freedesktop.org/archives/xorg/2011-October/053680.html | mailing-listx_refsource_MLIST | |
| http://rhn.redhat.com/errata/RHSA-2012-0939.html | vendor-advisoryx_refsource_REDHAT | |
| http://secunia.com/advisories/46460 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/49579 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-4029 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=745024 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4029 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4029 |
Change history (0)
No recorded changes yet.