CVE-2018-15471 Integer overflow in n/a

What is CVE-2018-15471?

CVE-2018-15471 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 17 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks.

Weakness: CWE-125

Which versions are affected by CVE-2018-15471?

It affects 3 products.

Products include Canonical Ubuntu Linux, Linux kernel, Xen Xen.

How do I fix CVE-2018-15471?

Apply the vendor's patch.

Is CVE-2018-15471 being exploited?

There is no known exploitation of CVE-2018-15471 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-15471, GHSA-qv83-77rj-635j, SUSE-SU-2018:2677-1, UBUNTU-CVE-2018-15471.