7
CVSSv3

CVE-2020-25212

Published: 09/09/2020 Updated: 28/04/2022
CVSS v2 Base Score: 4.4 | Impact Score: 6.4 | Exploitability Score: 3.4
CVSS v3 Base Score: 7 | Impact Score: 5.9 | Exploitability Score: 1
VMScore: 393
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Summary

A TOCTOU mismatch in the NFS client code in the Linux kernel prior to 5.8.3 could be used by local malicious users to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.

Vulnerability Trend

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linux linux kernel

debian debian linux 9.0

opensuse leap 15.1

opensuse leap 15.2

canonical ubuntu linux 18.04

canonical ubuntu linux 14.04

canonical ubuntu linux 20.04

canonical ubuntu linux 16.04

Vendor Advisories

Synopsis Moderate: kernel security and bug fix update Type/Severity Security Advisory: Moderate Topic An update for kernel is now available for Red Hat Enterprise Linux 77 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Moderate A Common Vulnerability ...
Synopsis Moderate: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Moderate 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 Moderate A Common Vulnerability Scoring Syst ...
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 ...
Synopsis Important: kernel security and bug fix 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 System (CVSS) b ...
Synopsis Important: kernel-alt security update Type/Severity Security Advisory: Important Topic An update for kernel-alt 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 (CVSS) base ...
In the Linux kernel 5021 and 5311, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cachec because the pointer to a left data structure can be the same as the pointer to a right data structure (CVE-2019-19448) ...
In the Linux kernel 5021 and 5311, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cachec because the pointer to a left data structure can be the same as the pointer to a right data structureA flaw was found ...
A flaw was found in the Linux kernel's implementation of BTRFS free space management, where the kernel does not correctly manage the lifetime of internal data structures used An attacker could use this flaw to corrupt memory or escalate privileges (CVE-2019-19448) A use-after-free flaw was found in the debugfs_remove function in the Linux kernel ...