CVE-2026-98652: Linux kernel · KVM: s390: Add missing srcu in kvm_s390_set_irq_state()
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to f3a557067d57ce6ae98d485c8009b223e16f5f36 or 7a33007b95c8908ae3980eb2b4c508f8936766df when convenient.
Data as of 26 Oct 2026, 10:12 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f3a557067d57ce6ae98d485c8009b223e16f5f36, 7a33007b95c8908ae3980eb2b4c508f8936766df
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade Linux kernel to f3a557067d57ce6ae98d485c8009b223e16f5f36 or 7a33007b95c8908ae3980eb2b4c508f8936766df.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A patch is available and has been applied in the Linux kernel. Users should update to the fixed versions identified by commits f3a557067d57ce6ae98d485c8009b223e16f5f36 and 7a33007b95c8908ae3980eb2b4c508f8936766df. Since this is a kernel-level fix, updating the Linux kernel to a version including these commits will remediate the issue.
Description
A vulnerability in the Linux kernel's KVM s390 subsystem was fixed by adding a missing srcu lock in the function kvm_s390_set_irq_state(). This function, like kvm_s390_inject_vcpu(), requires the kvm->srcu or slots lock when performing the Store status operation to ensure proper synchronization. The fix involves taking the kvm->srcu lock in kvm_s390_set_irq_state().