Vulnerability Description
In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.14.9, < 4.14.75 |
| Canonical | Ubuntu Linux | 14.04 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 7.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b79920PatchThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0514Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1686Issue TrackingPatchThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75PatchRelease NotesThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13PatchRelease NotesThird Party Advisory
- https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd68PatchThird Party Advisory
- https://support.f5.com/csp/article/K38456756Third Party Advisory
- https://usn.ubuntu.com/3832-1/Third Party Advisory
- https://usn.ubuntu.com/3835-1/Third Party Advisory
- https://usn.ubuntu.com/3847-1/Third Party Advisory
- https://usn.ubuntu.com/3847-2/Third Party Advisory
- https://usn.ubuntu.com/3847-3/Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b79920PatchThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
FAQ
What is CVE-2018-18445?
CVE-2018-18445 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_...
How severe is CVE-2018-18445?
CVE-2018-18445 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-18445?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus.