kernel: partial ASLR bypass through TLS base addresses leak
Published Dec 26, 2014
2.1
LOWCVSS 2.0
EPSS 0.44%
Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address.
Affected products
No data.
- ≤ 3.18.1
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-504.23.4.el6
Fixed · RHSA-2015:1081
Red Hat Enterprise Linux 7
kernel-0:3.10.0-327.el7
Fixed · RHSA-2015:2152
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-327.rt56.204.el7
Fixed · RHSA-2015:2411
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise MRG 2
kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-504.23.4.el6 | Fixed | RHSA-2015:1081 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-327.el7 | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-327.rt56.204.el7 | Fixed | RHSA-2015:2411 |
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue. This issue has been rated as having Low security impact and is not currently planned to be addressed in future updates for Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.
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: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 2, 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 2, 2026 | 0.44% (0.00436) | 35.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.44% (0.00436) | 34.57th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00056) | 14.69th | 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://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f647d7c155f069c1a068030255c300663516420e x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1081.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3128 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2014/12/25/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/71794 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2515-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2516-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2517-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2518-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2541-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2542-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2014-9419 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1177260 x_refsource_CONFIRMVendor AdvisoryIssue Tracking
- https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2014-9419
- https://www.cve.org/CVERecord?id=CVE-2014-9419
Change history (0)
No recorded changes yet.