8.8

CVE-2026-89932: linux

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-89932DEBIAN-CVE-2026-89932
Published 16-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-89932 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.3% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 5
MGASA-2026-0506OPENSUSE-SU-2026:11880-1SUSE-SU-2026:4665-1SUSE-SU-2026:4666-1SUSE-SU-2026:4667-1SUSE-SU-2026:4668-1

Timeline

  1. 16-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting last_vpid=0 when allocating vpid02. nested_vmx_transition_tlb_flush() will always detect a VPID change on first VM-Enter after VMXON, because VPID=0 in vmcs12 is not allowed if L1 enables VPID. This avoids using stale TLB entries from a previous lifetime of the VPID, that might have been associated with a different vCPU (or a completely different VM). Note that last_vpid is already being initialized as 0 when the vCPU is created, but it is not reset when vpid02 is freed on VMXOFF. Hence, the problem can only occur if L1 does VMXOFF -> VMXON, runs an L2, and KVM happens to reuse a VPID that has TLB entries on the physical CPU.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 26de0d2d9a8d14c03e5ebb25fd68b5bfcd5ac366 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 8bc609999ec223089fec8d74c7de27d689606b36 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 62604376c313178811375f40a282fc2a46cd2311 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 8b98d662ab24f34710a56e03bc9169e4a5508606 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 22dfcc22c95e91295119a1c3b469816ce44c4804 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < 121991d150735f3c0f7401678ce4d35c5b4ac898 | ≥ 5c614b3583e7b6dab0c86356fa36c2bcbb8322a0, < f0772389413dce9657c7d6950abf3edbbd511356 | 4.4

3 vendors · 172 products

References

12 links
Show all 12 references