VDB
CVE-2019-15794
CVE-2019-15794
PUBLISHED
Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma->vm_file in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vm_file points. On upstream kernels this is not an issue, as no callers dereference vm_file following after call_mmap() returns an error. However, the aufs patchs change mmap_region() to replace the fput() using a local variable with vma_fput(), which will fput() vm_file, leading to a refcount underflow.
EPSS 0.09% · 26.2th percentile
Risk Scores
EPSS Score
0.09%
26.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-fips | 5.15.0-133.144+fips1, 5.15.0-171.181+fips1, * |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-63.66.1, 6.8.0-64.67.1, 6.8.0-65.68.1 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | 0, 6.14.0-1007.7, 6.14.0-1006.6 |
| Ubuntu:16.04:LTS | linux-hwe-edge | 4.10.0-22.24~16.04.1, 4.10.0-19.21~16.04.1, 4.8.0-34.36~16.04.1 |
| Ubuntu:24.04:LTS | linux-intel | 0, 6.8.0-1005.12, 6.8.0-1006.13 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-raspi-realtime | 6.8.0-2011.11, 6.8.0-2009.9, 6.8.0-2008.8 |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-azure-fips | 5.15.0-1070.79+fips1, 0, 5.15.0-1053.61+fips1 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1029.31~22.04.1, 6.8.0-1024.26~22.04.1, 6.8.0-1023.25~22.04.1 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1007.7, 6.8.0-1013.13, 6.8.0-1029.29 |
| Ubuntu:18.04:LTS | linux-azure | 4.15.0-1022.23, 4.15.0-1008.8, 4.15.0-1004.4 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | 6.14.0-1014.14~24.04.1, 6.14.0-1017.17~24.04.1, * |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1026.29, 0, 6.8.0-1001.3 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1091.98, 5.15.0-1093.100, 5.15.0-1070.76 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | 0, 6.17.0-1005.5~24.04.2, 6.17.0-1007.7~24.04.1 |
| Ubuntu:Nvidia-BlueField:22.04:LTS | linux-bluefield | 5.15.0-1060.62, 5.15.0-1014.16, 5.15.0-1072.74 |
| Ubuntu:22.04:LTS | linux | 5.15.0-140.150, 5.15.0-139.149, 5.15.0-112.122 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1080.86, 0, 5.15.0-1004.6 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1033.33, 6.8.0-1005.5, 6.8.0-1011.11 |
| Ubuntu:18.04:LTS | linux-hwe-edge | 5.0.0-17.18~18.04.1, 5.0.0-16.17~18.04.1, 5.3.0-22.24~18.04.1 |
| Ubuntu:25.10 | linux-aws | 6.16.0-1001.1, 6.17.0-1003.3, 6.17.0-1001.1 |
…and 109 more
Exploit Intelligence
Timeline
- Nov 8, 2019 CVE Published
- Nov 20, 2019 PoC 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 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-15794 third-party-advisory
- https://ubuntu.com/security/notices/USN-4208-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4209-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-15794 third-party-advisory