5.5

CVE-2026-46059: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN

Modified
AliasesUBUNTU-CVE-2026-46059DEBIAN-CVE-2026-46059CGA-46r2-mq4g-rm4x
Published 27-05-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-46059 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 19
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1SUSE-SU-2026:22903-1SUSE-SU-2026:22904-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN For guests with NRIPS disabled, L1 does not provide NextRIP when running an L2 with an injected soft interrupt, instead it advances the current RIP before running it. KVM uses the current RIP as the NextRIP in vmcb02 to emulate a CPU without NRIPS. However, after L2 runs the first time, NextRIP will be updated by the CPU and/or KVM, and the current RIP is no longer the correct value to use in vmcb02. Hence, after save/restore, use the current RIP if and only if a nested run is pending, otherwise use NextRIP. Give soft_int_next_rip the same treatment, as it's the same logic, just for a narrower use case. [sean: give soft_int_next_rip the same treatment]

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu149 products
  • linuxAll versions (No fix recorded) | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-azure-6.12All versions (No fix recorded)
  • linux-gcp-6.12All versions (No fix recorded)
  • linux-qemu-6.12All versions (No fix recorded)
  • linux-vmware-6.12All versions (No fix recorded)
Linux2 products
  • linux≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < 98717fb482fa269db491f7c84aec777d3aeb2cd1 | ≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < b1a45e8a59bcf1f1ec0da6d4e42190b4211c67fc | ≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < f9197a9dd1408e203147326139122f9c5312ce9c | ≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < 3428ed1529a1af4cce5aff6c5bd2fcc39ad726bb | ≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < 69fe1411a5ce678b4da6489b5d2282b4e1d13acf | ≥ cc440cdad5b7a4c1de12dace725209eb3e0cf663, < 8d397582f6b5e9fbcf09781c7c934b4910e94a50 | 5.8
  • linux_kernel≥ 5.8, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.115-2 | < 7.0.4-1

4 vendors · 157 products

References

16 links
Show all 16 references