8.8

CVE-2026-80547: s390/vfio_ccw: Implement a crw lock

Received
AliasesUBUNTU-CVE-2026-80547DEBIAN-CVE-2026-80547
Published 26-08-2026Last modified 16-10-2026

Vulnerability summary

CVE-2026-80547 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · -0.05 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 8 · Related 1
MGASA-2026-0506MGASA-2026-0542USN-8886-1USN-8959-1USN-8960-1USN-8961-1

Timeline

  1. 26-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Implement a crw lock Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware. Implement a lock to manage the list of those payloads, to ensure they are read cohesively.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Decrease -0.05 pp

From 0.18% on 06-10-2026

06-10-202605-11-2026

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.

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-202.212 | < 7.0.0-42.42
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1119.126 | < 7.0.0-1016.17
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.10-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < 3c94d4179bcc19e01b28db634c07a58b28116209 | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < 0edd222730a9d7ec98368aaf1d40ee2d8d862e61 | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < a3d60ae24183eee352c8e87a0ff94c97cd87f156 | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < 49fa26b0df009dc1f420980bd71780e70615b83b | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < 7902be374cbfc11c3435e1e87bf22195bf06a558 | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9 | ≥ 3f02cb2fd9d2d9e8762102886e3e4b51285797ee, < 16b0798024c0e9117e395829ddbbe70981c79d9c | 5.8

3 vendors · 160 products

References

16 links
Show all 16 references