kernel: sound: spinlock lockup in sound/core/timer.c
Published Apr 27, 2016
6.2
MEDIUMCVSS 3.0
EPSS 0.48%
Description
sound/core/hrtimer.c in the Linux kernel before 4.4.1 does not prevent recursive callback access, which allows local users to cause a denial of service (deadlock) via a crafted ioctl call.
Affected products
No data.
- ≤ 4.4
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | 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, as the code with the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/A:P
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 | 0.48% (0.00481) | 39.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.48% (0.00481) | 37.51th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00066) | 17.58th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.16% (0.00164) | 54.38th | v3 (v2023.03.01) |
| Nov 10, 2023 | 0.16% (0.00164) | 52.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00126) | 45.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (22)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2ba1fe7a06d3624f9a7586d672b55f08f7c670f3 x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3503 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2016/01/19/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/83382 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2929-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2929-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2930-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2930-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2930-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2931-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2932-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2967-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2967-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-2549 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1311570 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/2ba1fe7a06d3624f9a7586d672b55f08f7c670f3 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-2549
- https://www.cve.org/CVERecord?id=CVE-2016-2549
Change history (0)
No recorded changes yet.