VDB
CVE-2019-15791
CVE-2019-15791
PUBLISHED
CVSS 7.099999904632568 HIGH
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.
EPSS 1.32% · 70.3th percentile
Risk Scores
CVSS 3.1
7.099999904632568
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS Score
1.32%
70.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1008.8, 5.15.0-1007.7, 5.15.0-1006.6 |
| Ubuntu:16.04:LTS | linux-hwe-edge | 4.8.0-34.36~16.04.1, 4.10.0-19.21~16.04.1, 4.10.0-14.16~16.04.1 |
| Ubuntu:18.04:LTS | linux-hwe-edge | 0, 5.0.0-17.18~18.04.1, 5.0.0-19.20~18.04.1 |
| Ubuntu:20.04:LTS | linux-gkeop-5.15 | *, *, * |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | 0, 5.15.0-1073.75 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | 6.8.0-2019.20, 0 |
| Ubuntu:20.04:LTS | linux-riscv | 5.4.0-33.37, 5.4.0-28.32, 5.4.0-37.42 |
| Ubuntu:20.04:LTS | linux-raspi2 | 0, 5.3.0-1007.8, 5.3.0-1017.19 |
| Ubuntu:20.04:LTS | linux-gkeop | 5.4.0-1067.71, 5.4.0-1008.9, 5.4.0-1010.11 |
| Ubuntu:18.04:LTS | linux-gcp-edge | 4.18.0-1006.7~18.04.1, 4.18.0-1005.6~18.04.1, 4.18.0-1004.5~18.04.1 |
| Ubuntu:20.04:LTS | linux-azure-fde | 5.4.0-1068.71+cvm1.1, 5.4.0-1070.73+cvm1.1, 5.4.0-1073.76+cvm1.1 |
| Ubuntu:20.04:LTS | linux-gke | 5.4.0-1053.56, 5.4.0-1052.55, 5.4.0-1051.54 |
| Ubuntu:18.04:LTS | linux-azure-edge | 4.18.0-1007.7~18.04.1, 4.18.0-1008.8~18.04.1, 5.0.0-1012.12~18.04.2 |
| Ubuntu:22.04:LTS | linux-realtime | 0, 5.15.0-1032.35 |
Timeline
- Nov 12, 2019 CVE Published
- Nov 20, 2019 PoC Published
- Nov 20, 2019 PoC Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 3, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 5, 2022 EPSS Score
- Jul 8, 2022 EPSS Score
References
- https://www.cve.org/CVERecord?id=CVE-2019-15791 third-party-advisory
- https://ubuntu.com/security/CVE-2019-15791 advisory
- https://ubuntu.com/security/notices/USN-4183-1 advisory
- https://ubuntu.com/security/notices/USN-4184-1 advisory