s390/vfio_ccw: Cancel existing workqueues
Priority LOW 39Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 5 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup tags in _release_dev to ensure work isn't dispatched after the private struct is free'd.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00129 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.267, 5.15.218, 6.1.185 +5Red Hat: 1 advisoryRed Hat: 5 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.12 and later | 5.10.267, 5.15.218, 6.1.185, 6.6.153, 6.12.105, 6.18.46, 7.1.10, 7.2 | Patch available | CNA |
- Linux VendorLinux Affected 4.12 and later Fixed in 5.10.267, 5.15.218, 6.1.185, 6.6.153, 6.12.105, 6.18.46, 7.1.10, 7.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.267, 5.15.218, 6.1.185, 6.6.153, 6.12.105, 6.18.46, 7.1.10, 7.2
Red Hat 1 advisory
- RHSA-2026:95370 Released 2026-11-05 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.66.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.66.1.el9_8, kernel-64k-devel-5.14.0-687.66.1.el9_8 +12
- Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.66.1.el9_8, kernel-64k-5.14.0-687.66.1.el9_8, kernel-64k-core-5.14.0-687.66.1.el9_8 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.66.1.el9_8, libperf-5.14.0-687.66.1.el9_8
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.66.1.el9_8, kernel-rt-64k-5.14.0-687.66.1.el9_8, kernel-rt-64k-core-5.14.0-687.66.1.el9_8 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.66.1.el9_8, kernel-rt-core-5.14.0-687.66.1.el9_8, kernel-rt-debug-5.14.0-687.66.1.el9_8 +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:95370 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:95370 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:95370 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2026:95370 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2026:95370 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80553
- 2026-10-03 Alias added: GHSA-rq35-rvjv-r5cq
- 2026-10-18 CISA SSVC decision points changed
- 2026-11-06 Fix available: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) +2 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95370 · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/87d569cb35a541b31a184faf982540694d4c9a89
- https://git.kernel.org/stable/c/7492ca2d0c5d59add01e267be9f5a6eeb8076fd7
- https://git.kernel.org/stable/c/b94b28c1f0fae53b2f2d6180ae6442c9a1558f67
- https://git.kernel.org/stable/c/e868ea8be0bc88c6982f48ecf3259d98afd884ae
- https://git.kernel.org/stable/c/dc47a98abe6714577a25224534dbd356051097a3
- https://git.kernel.org/stable/c/b7ae0f7993867d009a4b554fc1d6d451c10580a0
- https://git.kernel.org/stable/c/77f5e888d2e607a0b3141fb95091ad6ef1cca9a2
- https://git.kernel.org/stable/c/79c60b2c61105368dcc8444eb45847e21734f7c4
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-80553 · CVE Program
- CVE-2026-80553 · NVD
- FIRST EPSS
- GHSA-rq35-rvjv-r5cq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80553 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences