CVE-2026-35092: Red Hat Enterprise Linux 10 · Integer Overflow or Wraparound
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 1 Apr 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10corosync | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10corosync | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportcorosync | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7 Extended Lifecycle Supportcorosync | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8corosync | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportcorosync | Affected– | Fixed in– |
AI-suggested
Red Hat has released official security updates for Corosync that address this vulnerability. Users should apply the updated Corosync packages as detailed in Red Hat advisories RHSA-2026:13644 and RHSA-2026:13657. The advisories provide instructions and links for applying the patches on affected Red Hat Enterprise Linux 10 and 8 systems. Applying these updates fully mitigates the vulnerability. No additional mitigation actions are required beyond applying the vendor-provided patches.
Description
A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.
References
- access.redhat.com/errata/RHSA-2026:13644 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:13657 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:13673 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14205 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14210 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14211 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14212 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14213 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14214 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14215 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14216 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19043 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19200 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20916 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-35092 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2453169 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2453814 (opens in a new tab)