Vulnerability in Linux Kernel
CVE-2020-27825
A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat.
Vulnerability class: Race Condition
EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Linux Linux_kernel — versions 5.10
- Netapp Cloud_backup
- Netapp H410c
- Netapp H410c_firmware
- Netapp Solidfire_baseboard_management_controller
- Netapp Solidfire_baseboard_management_controller_firmware
- Debian Debian_linux — versions 9.0, 10.0
- Redhat Enterprise_linux — versions 7.0, 8.0
- Redhat Enterprise_mrg — versions 2.0
- N/a Kernel — versions before kernel 5.10-rc1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27825?
- CVE-2020-27825 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.7/10. Published 2020-12-11.
- How severe is CVE-2020-27825?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2020-27825 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.