kernel: futex: refcount issue in case of requeue
Published Sep 28, 2014
6.9
MEDIUMCVSS 2.0
EPSS 0.66%
Description
The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.
Affected products
No data.
- ≤ 2.6.36.4
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36.1
- 2.6.36.2
- 2.6.36.3
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-431.29.2.el6
Fixed · RHSA-2014:1167
Red Hat Enterprise Linux 6.2 Advanced Update Support
kernel-0:2.6.32-220.56.1.el6
Fixed · RHSA-2014:1763
Red Hat Enterprise Linux 6.4 Extended Update Support
kernel-0:2.6.32-358.49.1.el6
Fixed · RHSA-2014:1365
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-431.29.2.el6 | Fixed | RHSA-2014:1167 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | kernel-0:2.6.32-220.56.1.el6 | Fixed | RHSA-2014:1763 |
| Red Hat Enterprise Linux 6.4 Extended Update Support | kernel-0:2.6.32-358.49.1.el6 | Fixed | RHSA-2014:1365 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG-2. Future Linux kernel updates for Red Hat Enterprise Linux 6 may address this issue.
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:C/I:C/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.66% (0.00661) | 49.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.67% (0.00667) | 46.82th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00041) | 9.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.11% (0.00112) | 46.14th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.11% (0.00112) | 44.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00112) | 42.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.11% (0.01108) | 54.62th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.54% (0.01537) | 73.85th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ada876a8703f23befbb20a7465a702ee39b1704 x_refsource_CONFIRM
- http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.37 x_refsource_CONFIRMExploitVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2014-1365.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2014-1763.html vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2014-0205 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1094455 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/7ada876a8703f23befbb20a7465a702ee39b1704 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2014-0205
- https://www.cve.org/CVERecord?id=CVE-2014-0205
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ada876a8703f23befbb20a7465a702ee39b1704 | x_refsource_CONFIRM | |
| http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.37 | x_refsource_CONFIRMExploitVendor Advisory | |
| http://rhn.redhat.com/errata/RHSA-2014-1365.html | vendor-advisoryx_refsource_REDHAT | |
| http://rhn.redhat.com/errata/RHSA-2014-1763.html | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2014-0205 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1094455 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/7ada876a8703f23befbb20a7465a702ee39b1704 | x_refsource_CONFIRMExploit | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0205 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0205 |
Change history (0)
No recorded changes yet.