Vulnerability Description
The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.9, < 4.9.72 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762Vendor Advisory
- http://openwall.com/lists/oss-security/2017/12/21/2Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/102288Third Party AdvisoryVDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1454Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276aVendor Advisory
- https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://usn.ubuntu.com/3633-1/Third Party Advisory
- https://usn.ubuntu.com/usn/usn-3523-2/Third Party Advisory
- https://www.debian.org/security/2017/dsa-4073Third Party Advisory
- https://www.exploit-db.com/exploits/44298/Third Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/45010/Third Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/45058/Third Party AdvisoryVDB Entry
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762Vendor Advisory
FAQ
What is CVE-2017-16995?
CVE-2017-16995 is a vulnerability with a CVSS score of 7.8 (HIGH). The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leve...
How severe is CVE-2017-16995?
CVE-2017-16995 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-2017-16995?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Canonical Ubuntu Linux.