CVE-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 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.
EPSS 0.43% · 62.8th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:FIPS:18.04:LTS | linux-gcp-fips | 4.15.0-1001.1, 0 |
| Ubuntu:18.04:LTS | linux-oracle | 4.15.0-1039.43, 4.15.0-1045.49, 4.15.0-1047.51 |
| Ubuntu:20.04:LTS | linux-azure | 5.3.0-1009.10, 5.3.0-1008.9, 5.3.0-1003.3 |
| Ubuntu:16.04:LTS | linux-hwe | 4.8.0-49.52~16.04.1, 4.8.0-45.48~16.04.1, 4.8.0-44.47~16.04.1 |
| Ubuntu:18.04:LTS | linux-gke-4.15 | 4.15.0-1050.53, 4.15.0-1063.66, 4.15.0-1030.32 |
| Ubuntu:18.04:LTS | linux-aws | 4.15.0-1058.60, 4.15.0-1065.69, 4.15.0-1066.70 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-azure-fips | 4.15.0-1002.2, 0 |
| Ubuntu:18.04:LTS | linux-oem | 4.15.0-1059.68, 4.15.0-1063.72, 4.15.0-1034.39 |
| Ubuntu:18.04:LTS | linux-gke-5.3 | 5.3.0-1011.12~18.04.1, 5.3.0-1012.13~18.04.1, 0 |
| Ubuntu:16.04:LTS | linux-gcp | 4.10.0-1008.8, 4.10.0-1006.6, * |
| Ubuntu:18.04:LTS | linux-snapdragon | 4.4.0-1077.82, 4.15.0-1057.62, 4.15.0-1069.76 |
| Ubuntu:20.04:LTS | linux-oracle | 0, 5.3.0-1007.8, 5.3.0-1008.9 |
| Ubuntu:Pro:16.04:LTS | linux-kvm | 4.4.0-1148.159, 4.4.0-1080.87, 4.4.0-1020.25 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | 5.15.0-1073.75, 0 |
| Ubuntu:20.04:LTS | linux-kvm | 5.3.0-1008.9, 5.3.0-1009.10, 5.4.0-1004.4 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-aws-fips | 4.15.0-2021.21, 4.15.0-2018.18, 0 |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-aws-fips | 4.15.0-2000.4, 0 |
| Ubuntu:Pro:14.04:LTS | linux | 3.13.0-181.232, 3.13.0-182.233, 3.13.0-183.234 |
| Ubuntu:Pro:14.04:LTS | linux-aws | 4.4.0-1078.82, 4.4.0-1075.79, 4.4.0-1074.78 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-fips | 4.15.0-1029.34, 4.15.0-1034.39, 0 |
…and 41 more
Exploit Intelligence
Timeline
- Nov 20, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-19039 third-party-advisory
- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19039 third-party-advisory
- https://ubuntu.com/security/notices/USN-4414-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19039 third-party-advisory