Linux Kernel up to 4.2.5 Filesystem Operation fs/overlayfs/copy_up.c resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.4 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel up to 4.2.5 (Operating System). It has been rated as problematic. Affected by this issue is an unknown code of the file fs/overlayfs/copy_up.c of the component Filesystem Operation Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:
fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on a large file in a lower overlayfs layer.
The weakness was released 10/16/2016 (Website). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2015-8953 since 08/25/2016. The exploitation is known to be easy. Local access is required to approach this attack. A simple authentication is needed for exploitation. Technical details are known, but there is no available exploit.
Upgrading to version 4.2.6 eliminates this vulnerability.
Entries connected to this vulnerability are available at 92730, 92729, 92725 and 92724.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.5VulDB Meta Temp Score: 5.4
VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.5
NVD Vector: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 4.2.6
Patch: git.kernel.org
Timeline
08/24/2016 🔍08/25/2016 🔍
10/16/2016 🔍
10/16/2016 🔍
10/17/2016 🔍
09/26/2022 🔍
Sources
Vendor: kernel.orgAdvisory: ab79efab0a0ba01a74df782eb7fa44b044dae8b5
Status: Not defined
Confirmation: 🔍
CVE: CVE-2015-8953 (🔍)
SecurityFocus: 92611 - Linux Kernel 'ovl_copy_up_locked()' Local Denial of Service Vulnerability
See also: 🔍
Entry
Created: 10/17/2016 10:25Updated: 09/26/2022 10:00
Changes: 10/17/2016 10:25 (54), 05/11/2019 00:38 (12), 09/26/2022 10:00 (4)
Complete: 🔍
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