CVE-2019-19816 — Out-of-bounds Write in Kernel

CWE-787 — Out-of-bounds Write13 documents8 sources
Severity
7.8HIGHNVD
EPSS
1.2%
top 21.45%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelCanonical Ubuntu LinuxDebian Linux+1 more
Timeline
PublishedDec 17
Latest updateMay 24

Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶NVDlinux/linux_kernel2.6.12 — 4.4.247+4
▶Debianlinux/linux_kernel< 5.2.6-1+3

Also affects: Debian Linux 9.0, Ubuntu Linux 14.04, 16.04, 18.04

🔴Vulnerability Details

5
GHSA
GHSA-m6v9-2r23-587c: In the Linux kernel 5↗2022-05-24
▶
OSV
linux, linux-lts-xenial vulnerabilities↗2021-01-28
▶
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities↗2020-07-06
▶
CVEList
CVE-2019-19816: In the Linux kernel 5↗2019-12-17
▶
OSV
CVE-2019-19816: In the Linux kernel 5↗2019-12-17
▶

📋Vendor Advisories

5
Ubuntu
Linux kernel vulnerabilities↗2021-02-02
▶
Ubuntu
Linux kernel vulnerabilities↗2021-01-28
▶
Ubuntu
Linux kernel vulnerabilities↗2020-07-06
▶
Red Hat
kernel: out-of-bounds write in __btrfs_map_block in fs/btrfs/volumes.c↗2019-12-17
▶
Debian
CVE-2019-19816: linux - In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and perfor...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-19816 kernel: out-of-bounds write in __btrfs_map_block in fs/btrfs/volumes.c [fedora-all]↗2019-12-18
▶
Bugzilla
CVE-2019-19816 kernel: out-of-bounds write in __btrfs_map_block in fs/btrfs/volumes.c↗2019-12-18
▶
CVE-2019-19816 — Out-of-bounds Write in Linux Kernel | cvebase