Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- openvswitch3.5
Version range not reported
- openvswitch3.6
Version range not reported
- openvswitch2.11
Version range not reported
- openvswitch2.12
Version range not reported
- openvswitch2.13
Version range not reported
- openvswitch2.15
Version range not reported
- openvswitch2.16
Version range not reported
- openvswitch2.17
Version range not reported
- openvswitch3.1
Version range not reported
- openvswitch2.17
Version range not reported
- openvswitch3.0
Version range not reported
- openvswitch3.1
Version range not reported
- openvswitch3.2
Version range not reported
- openvswitch3.3
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- openvswitch3.4
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- openvswitch3.5
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- openvswitch3.6
Version range not reported
- dpdk
Version range not reported
- dpdk
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- dpdk
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- openvswitch2.17
Version range not reported
- openvswitch3.0
Version range not reported
- openvswitch3.1
Version range not reported
- openvswitch
Version range not reported