UBUNTU-CVE-2018-18445
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.
02 / AFFECTED SOFTWARE
Affected packages
5 explicit affected versions
1 explicit affected versions
28 explicit affected versions
24 explicit affected versions
44 explicit affected versions
22 explicit affected versions
17 explicit affected versions
19 explicit affected versions
16 explicit affected versions
17 explicit affected versions
14 explicit affected versions
19 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1686
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13
- https://git.kernel.org/linus/b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- https://ubuntu.com/security/CVE-2018-18445
- https://ubuntu.com/security/notices/USN-3832-1
- https://ubuntu.com/security/notices/USN-3835-1
- https://ubuntu.com/security/notices/USN-3847-1
- https://ubuntu.com/security/notices/USN-3847-2
- https://ubuntu.com/security/notices/USN-3847-3
- https://www.cve.org/CVERecord?id=CVE-2018-18445