CVE-2016-9794: linux linux_kernel
Modified
AliasesUBUNTU-CVE-2016-9794DEBIAN-CVE-2016-9794
Published 28-12-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-9794 is a high (CVSS 7.8) vulnerability in linux linux_kernel. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.9% of scored vulnerabilities.
Priority
Routine
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 38 · Related 33DLA-772-1MGASA-2016-0429MGASA-2017-0003MGASA-2017-0004RHSA-2016:2574SUSE-SU-2016:3146-1SUSE-SU-2016:3188-1SUSE-SU-2016:3203-1SUSE-SU-2016:3217-1SUSE-SU-2016:3248-1SUSE-SU-2016:3252-1SUSE-SU-2017:0226-1SUSE-SU-2017:0227-1SUSE-SU-2017:0228-1SUSE-SU-2017:0229-1SUSE-SU-2017:0230-1SUSE-SU-2017:0231-1SUSE-SU-2017:0233-1SUSE-SU-2017:0234-1SUSE-SU-2017:0235-1SUSE-SU-2017:0244-1SUSE-SU-2017:0245-1SUSE-SU-2017:0246-1SUSE-SU-2017:0247-1SUSE-SU-2017:0248-1SUSE-SU-2017:0249-1SUSE-SU-2017:0267-1SUSE-SU-2017:0268-1SUSE-SU-2017:0278-1SUSE-SU-2017:0293-1SUSE-SU-2017:0294-1SUSE-SU-2017:0407-1SUSE-SU-2017:1102-1USN-3168-1USN-3169-1USN-3169-2USN-3169-3USN-3169-4
Timeline
- 28-12-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Race condition in the snd_pcm_period_elapsed function in sound/core/pcm_lib.c in the ALSA subsystem in the Linux kernel before 4.7 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted SNDRV_PCM_TRIGGER_START command.
CVSS metrics
5 scores · 3 sources · 3 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 7.8Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.34% on 05-10-2026
05-10-202604-11-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-362Concurrent Execution using Shared Resource with Improper SynchronizationThe product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Affected systems
Version check
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu22 products
- linux< 3.13.0-107.154 | < 4.4.0-59.80
- linux-aws< 4.4.0-1003.12
- linux-azureAll versions (No fix recorded)
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
Debian1 product
- linux< 4.7.2-1
Linux1 product
- linux_kernel< 3.2.85 | ≥ 3.3, < 3.10.105 | ≥ 3.11, < 3.12.69 | ≥ 3.13, < 3.16.40 | ≥ 3.17, < 3.18.52 | ≥ 3.19, < 4.4.37 | ≥ 4.5, < 4.7
3 vendors · 24 products
References
27 links- lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
Show all 27 references
- github.com/torvalds/linux/commit/3aa02cb664c5fb1042958c8d1aa8c35055a2ebc4X Refsource CONFIRMPatchVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
