CVE-2019-19813 — Use After Free in Ubuntu Linux

CWE-416 — Use After Free13 documents8 sources
Severity
5.5MEDIUMNVD
EPSS
1.2%
top 20.67%
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, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶Debianlinux/linux_kernel< 5.2.6-1+3
▶NVDlinux/linux_kernel5.0.21

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

🔴Vulnerability Details

5
GHSA
GHSA-r82f-4c78-r455: In the Linux kernel 5↗2022-05-24
▶
OSV
linux, linux-lts-xenial vulnerabilities↗2021-01-28
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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
▶
OSV
CVE-2019-19813: In the Linux kernel 5↗2019-12-17
▶
CVEList
CVE-2019-19813: 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: use-after-free in __mutex_lock in kernel/locking/mutex.c↗2019-12-17
▶
Debian
CVE-2019-19813: linux - In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performin...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-19813 kernel: use-after-free in __mutex_lock in kernel/locking/mutex.c [fedora-all]↗2019-12-18
▶
Bugzilla
CVE-2019-19813 kernel: use-after-free in __mutex_lock in kernel/locking/mutex.c↗2019-12-18
▶
CVE-2019-19813 — Use After Free in Ubuntu Linux | cvebase