GHSA-r2jg-mcxg-628g · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: s390/ap: use generic...
In the Linux kernel, the following vulnerability has been resolved: s390/ap: use generic driver_override infrastructure When the AP masks are updated via apmask_store() or aqmask_store(), ap_bus_revise_bindings() is called after ap_attr_mutex has been released. This calls __ap_revise_reserved(), which accesses the driver_override field without holding any lock, racing against a concurrent driver_override_store() that may free the old string, resulting in a potential UAF. Fix this by using the driver-core driver_override infrastructure, which protects all accesses with an internal spinlock. Note that unlike most other buses, the AP bus does not check driver_override in its match() callback; the override is checked in ap_device_probe() and __ap_revise_reserved() instead. Also note that we do not enable the driver_override feature of struct bus_type, as AP - in contrast to most other buses - passes "" to sysfs_emit() when the driver_override pointer is NULL. Thus, printing "\n" instead of "(null)\n". Additionally, AP has a custom counter that is modified in the corresponding custom driver_override_store().
Conclusion & alert: CVE-2026-53116 is rated Low Risk (4.1/100): low exploitation likelihood (EPSS 0.14%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-25 | — | 0.14% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-r2jg-mcxg-628g · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: s390/ap: use generic...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-53116 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-53116 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-53116 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.19, < 7.0.10 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.19, < 7.1 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |