VulnerabilityModified

CVE-2020-27786

HIGH 7.8EPSS 1.67%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS 3.1: 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.67% probability · 75th percentile
CISA KEV: Not listed
Weakness: CWE-416
Affected: linux/linux kernel · redhat/openshift container platform · redhat/enterprise linux · redhat/enterprise mrg · netapp/cloud backup · netapp/solidfire baseboard management controller
Source: secalert@redhat.com

References

http://www.openwall.com/lists/oss-security/2020/12/03/1Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=1900933Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1f6e3c818dd734c30f6a7eeebf232ba2cf3181dPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210122-0002/Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/03/1Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=1900933Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1f6e3c818dd734c30f6a7eeebf232ba2cf3181dPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210122-0002/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.