CVE-2019-19039
published 2019-11-21CVE-2019-19039: __btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to…
PriorityP423medium5.5CVSS 3.1
AVLACLPRNUIRSUCHINAN
EPSS
0.70%
49.6th percentile
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 5.6.7-1 (bookworm) | linux 5.6.7-1 (bookworm) |
| linux | linux_kernel | <= 5.3.12 | — |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| 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:H/I:N/A:N
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:P/I:N/A:N
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu4.1MEDIUM
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GHSA
GHSA-g3r9-j55g-jg8j: __btrfs_free_extent in fs/btrfs/extent-tree
ghsa_unreviewed·2022-05-24
CVE-2019-19039 [LOW] CWE-200 GHSA-g3r9-j55g-jg8j: __btrfs_free_extent in fs/btrfs/extent-tree
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program.
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-2019-19039: __btrfs_free_extent in fs/btrfs/extent-tree
osv·2019-11-21·CVSS 5.5
CVE-2019-19039 [MEDIUM] CVE-2019-19039: __btrfs_free_extent in fs/btrfs/extent-tree
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.
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: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
vendor_redhat·2019-11-20·CVSS 5.5
CVE-2019-19039 [MEDIUM] CWE-200 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which cl
Debian
CVE-2019-19039: linux - __btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12...
vendor_debian·2019·CVSS 5.5
CVE-2019-19039 [MEDIUM] CVE-2019-19039: linux - __btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12...
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.
Scope: local
bookworm: resolved (fixed in 5.6.7-1)
bullsey
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c [fedora-all]
bugzilla·2019-11-22·CVSS 5.5
CVE-2019-19039 [MEDIUM] CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c [fedora-all]
CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.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 affec
Bugzilla
CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
bugzilla·2019-11-22·CVSS 5.5
CVE-2019-19039 [MEDIUM] CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
CVE-2019-19039 kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program.
Reference:
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19039
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1775804]
---
Another party currently has this issue marked as DISPUTED in the NVD database.
The reason that this is disputed is because the 'register' information is no different than any of the other warnings that show backtracer/register information to system logs. See the Mitigation heading for i
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19039https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlhttps://usn.ubuntu.com/4414-1/https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19039https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlhttps://usn.ubuntu.com/4414-1/
2019-11-21
Published