CVE-2019-19036
published 2019-11-21CVE-2019-19036: btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
PriorityP422medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
1.84%
76.9th percentile
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.3.7-1 (bookworm) | linux 5.3.7-1 (bookworm) |
| linux | linux_kernel | <= 5.3.12 | — |
| linux | linux_kernel | >= 0 < 5.3.7-1 | 5.3.7-1 |
| linux | linux_kernel | >= 0 < 5.3.7-1 | 5.3.7-1 |
| linux | linux_kernel | >= 0 < 5.3.7-1 | 5.3.7-1 |
| linux | linux_kernel | >= 0 < 5.3.7-1 | 5.3.7-1 |
| linux | linux_kernel | >= 0 < 4.15.0-109.110 | 4.15.0-109.110 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu4.1MEDIUM
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-27·CVSS 4.1
CVE-2019-12380 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
lo
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-06·CVSS 4.1
CVE-2019-19318 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of service
(system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036,
CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)
It was discovered that the btrfs implementation in the Linux kernel did not
properly detect that a b
Red Hat
kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
vendor_redhat·2019-11-18·CVSS 5.5
CVE-2019-19036 [MEDIUM] CWE-476 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
A NULL pointer dereference flaw in the btrfs_root_node in fs/btrfs/ctree.c may occur if the rcu_dereference function return is not validated in time of failure. This flaw could allow an attacker to crash the system or leak internal kernel information.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: ker
Debian
CVE-2019-19036: linux - btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a ...
vendor_debian·2019·CVSS 5.5
CVE-2019-19036 [MEDIUM] CVE-2019-19036: linux - btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a ...
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
Scope: local
bookworm: resolved (fixed in 5.3.7-1)
bullseye: resolved (fixed in 5.3.7-1)
forky: resolved (fixed in 5.3.7-1)
sid: resolved (fixed in 5.3.7-1)
trixie: resolved (fixed in 5.3.7-1)
GHSA
GHSA-gv5h-r3vm-944m: btrfs_root_node in fs/btrfs/ctree
ghsa_unreviewed·2022-05-24
CVE-2019-19036 [MEDIUM] GHSA-gv5h-r3vm-944m: btrfs_root_node in fs/btrfs/ctree
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
OSV
linux-gke-5.0, linux-oem-osp1 vulnerabilities
osv·2020-07-27·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux-gke-5.0, linux-oem-osp1 vulnerabilities
linux-gke-5.0, linux-oem-osp1 vulnerabilities
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial o
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
osv·2020-07-06·CVSS 4.1
CVE-2019-16089 [MEDIUM] 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
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
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of service
(system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036,
CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)
I
OSV
CVE-2019-19036: btrfs_root_node in fs/btrfs/ctree
osv·2019-11-21·CVSS 5.5
CVE-2019-19036 [MEDIUM] CVE-2019-19036: btrfs_root_node in fs/btrfs/ctree
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
bugzilla·2019-11-21·CVSS 5.5
CVE-2019-19036 [MEDIUM] CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
A NULL pointer dereference flaw in btrfs_root_node in fs/btrfs/ctree.c may occur if rcu_dereference function return is not validated in time of failure. This flaw could allow an attacker to crash the system or leak internal kernel information.
Reference:
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1775189]
---
Mitigation:
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
---
This was fixed for Fedora with the 5.3.4 st
Bugzilla
CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c [fedora-all]
bugzilla·2019-11-21·CVSS 5.5
CVE-2019-19036 [MEDIUM] CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c [fedora-all]
CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multi
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036https://security.netapp.com/advisory/ntap-20191205-0001/https://usn.ubuntu.com/4414-1/https://usn.ubuntu.com/4439-1/http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036https://security.netapp.com/advisory/ntap-20191205-0001/https://usn.ubuntu.com/4414-1/https://usn.ubuntu.com/4439-1/
2019-11-21
Published