5.5

CVE-2025-38469: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls

Analyzed
AliasesUBUNTU-CVE-2025-38469DEBIAN-CVE-2025-38469
Published 28-07-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-38469 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% 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
0.18%
0%100%
Low · +0.02 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 44 · Related 41
DSA-5975-1MGASA-2025-0218MGASA-2025-0219OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1

Timeline

  1. 28-07-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the "out" label, but the call to kvm_read_guest_virt() does not. [Adjusted commit message. - Paolo]

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

Increase +0.02 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.

Ubuntu121 products
  • linux< 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 92c58965e9656dc6e682a8ffe520fac0fb256d13, < 3ee59c38ae7369ad1f7b846e05633ccf0d159fab | ≥ 92c58965e9656dc6e682a8ffe520fac0fb256d13, < fd627ac8a5cff4d45269f164b13ddddc0726f2cc | ≥ 92c58965e9656dc6e682a8ffe520fac0fb256d13, < 061c553c66bc1638c280739999224c8000fd4602 | ≥ 92c58965e9656dc6e682a8ffe520fac0fb256d13, < 5a53249d149f48b558368c5338b9921b76a12f8c | 6.2
  • linux_kernelEOL≥ 6.2.1, < 6.6.100 | ≥ 6.7, < 6.12.40 | ≥ 6.13, < 6.15.8 | 6.2 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4 | 6.2:rc5 | 6.2:rc6 | 6.2:rc7 | 6.2:rc8 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4 | 6.16:rc5 | 6.16:rc6 | 6.16:rc7
Debian1 product
  • linux< 6.12.41-1 | < 6.16.3-1

3 vendors · 124 products

References

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