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6.4
CVSSv3

CVE-2020-10690

Published: 08/05/2020 Updated: 07/11/2023
CVSS v2 Base Score: 4.4 | Impact Score: 6.4 | Exploitability Score: 3.4
CVSS v3 Base Score: 6.4 | Impact Score: 5.9 | Exploitability Score: 0.5
VMScore: 392
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P
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Vulnerability Summary

There is a use-after-free in kernel versions prior to 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

Vulnerability Trend

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linux linux kernel

redhat enterprise linux 7.0

redhat enterprise linux 8.0

debian debian linux 8.0

canonical ubuntu linux 14.04

canonical ubuntu linux 16.04

opensuse leap 15.1

netapp element software -

netapp steelstore cloud integrated storage -

netapp solidfire -

netapp hci management node -

netapp active iq unified manager -

netapp hci compute node -

netapp h300s_firmware -

netapp h500s_firmware -

netapp h700s_firmware -

netapp h300e_firmware -

netapp h500e_firmware -

netapp h700e_firmware -

netapp h410s_firmware -

netapp h410c_firmware -

netapp h610c_firmware -

netapp h610s_firmware -

netapp h615c_firmware -

Vendor Advisories

Red Hat: Important: kernel-rt security and bug fix update
Synopsis Important: kernel-rt security and bug fix update Type/Severity Security Advisory: Important Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (C ...
Red Hat: Important: kernel security, bug fix, and enhancement update
Synopsis Important: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Mailing Lists

Full Disclosure: CVE-2020-10690 kernel: use-after-free in cdev_put() when a PTP device is removed while it's chardev is open
<!--X-Body-Begin--> <!--X-User-Header--> oss-sec mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> CVE-2020-10690 kernel: use-after-free in cdev_put() when a PTP device is removed while it's chardev is open <!--X-Subject-Head ...

References

CWE-416https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10690https://security.netapp.com/advisory/ntap-20200608-0001/https://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlhttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlhttps://usn.ubuntu.com/4419-1/https://access.redhat.com/errata/RHSA-2020:4062https://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
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