CVE-2026-93683: CWE-367
Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.4 Medium : update Red Hat Enterprise Linux 10 when convenient.
Data as of 3 Nov 2026, 22:58 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.4 |
|---|
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10dpdk | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9dpdk | Affected– | Fixed in– |
| Fast Datapath for RHEL 10openvswitch3.5 | Affected– | Fixed in– |
| Fast Datapath for RHEL 10openvswitch3.6 | Affected– | Fixed in– |
| Fast Datapath for RHEL 8openvswitch2.11 | Affected– | Fixed in– |
| Fast Datapath for RHEL 8openvswitch2.12 | Affected– | Fixed in– |
Description
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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-93683 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:94629 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:94630 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-93683 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2537015 (opens in a new tab)