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CVE-2018-15471 CrOS: Vulnerability reported in Linux kernel |
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Issue descriptionVOMIT (go/vomit) has received an external vulnerability report for the Linux kernel. Advisory: CVE-2018-15471 Details: http://vomit.googleplex.com/advisory?id=CVE/CVE-2018-15471 CVSS severity score: 6.8/10.0 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. This bug was filed by http://go/vomit Please contact us at vomit-team@google.com if you need any assistance.
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Nov 2
#1: We still need information about chromeos-4.14 (which does have the fix as well). |
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Comment 1 by zsm@chromium.org
, Nov 2Labels: Security_Severity-High Security_Impact-None Pri-2
Owner: zsm@chromium.org
Status: WontFix (was: Untriaged)
Upstream commit is 780e83c259f("xen-netback: fix input validation in xenvif_set_hash_mapping()") This commit is present in chromeos-4.19 and v4.4. Older kernels do not need this commit. CONFIG_XEN_NETDEV_BACKEND is not set however; no action required. Marking as WontFix.