CVE-2015-8539 json
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyc…
published 10y ago modified 4mo ago also EUVD-2015-8420
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.
Patch / fix
- linux linux_kernel 4.4
- linux Ubuntu 14.04 LTS 3.13.0-161.211
ubuntu advisories UBUNTU-CVE-2015-8539
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-rt enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
- kernel-rt-trace enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
- kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
- kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
- kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
- kernel-rt RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
- kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
- kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
red hat advisories RHSA-2018:0181RHSA-2018:0152RHSA-2018:0151
- kernel-rt SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-compute SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-syms-rt SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-rt_debug SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-source-rt SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-compute_debug SLE Real Time 12 SP1 3.12.61-60.18.1
- kernel-ec2 SLES 11 SP3-LTSS, OpenStack Cloud 5, Manager Proxy 2.1 +1 more 3.0.101-0.47.79.1
- kernel-xen SLES 11 SP3-LTSS, OpenStack Cloud 5, Manager Proxy 2.1 +1 more 3.0.101-0.47.79.1
suse advisories SUSE-SU-2016:2074-1SUSE-SU-2016:1937-1SUSE-SU-2016:1203-1SUSE-SU-2016:1102-1SUSE-SU-2016:0911-1SUSE-SU-2016:0585-1
- kernel-source openSUSE Tumbleweed 4.8.13-1.1
opensuse advisories openSUSE-SU-2024:10128-1
Is CVE-2015-8539 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2015-8539 updated cvss 7.8
kernel: local privesc in key management
-
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7fixed: vendor fix RHSA-2018:0151
-
Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7 Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7fixed: vendor fix RHSA-2018:0152
-
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-kdump 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, +6 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.17.1.el7, kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.17.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7fixed: vendor fix RHSA-2018:0151
-
Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-trace 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-vanilla 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-firmware 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.604.el6rtfixed: vendor fix RHSA-2018:0181
-
Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
- Technology feeds
References
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd
vendor-advisory
-
github.com
/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd
issue-tracking, patch, vendor-advisory
-
openwall.com
/lists/oss-security/2015/12/09/1
mailing-list, issue-tracking, patch, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00009.html
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2018:0181
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00034.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00017.html
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2018:0152
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00007.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-04/msg00045.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00019.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00021.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00011.html
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2018:0151
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-08/msg00038.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00020.html
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3798-1/
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00022.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00008.html
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/3798-2/
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-02/msg00018.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-08/msg00000.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-03/msg00094.html
vendor-advisory, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1284450
issue-tracking, third-party-advisory
Sources
- CVE List CVE-2015-8539
- NVD CVE-2015-8539
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.