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CVE-2026-23090: slimbus: core: fix device reference leak on report present

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-04 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: slimbus: core: fix device reference leak on report present Slimbus devices can be allocated dynamically upon reception of report-present messages. Make sure to drop the reference taken when looking up already registered devices. Note that this requires taking an extra reference in case the device has not yet been registered and has to be allocated.

Affected products

• Linux kernel: from 4.16 before 5.10.249; from 5.11 before 5.15.199; from 5.16 before 6.1.162; from 6.2 before 6.6.122; from 6.7 before 6.12.68; from 6.13 before 6.18.8 — fixed in 5.10.249, 5.15.199, 6.1.162, 6.12.68, 6.18.8, 6.6.122

How to fix

Upgrade to a fixed version: Linux kernel 5.10.249, 5.15.199, 6.1.162, 6.12.68. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/02b78bbfbafe49832e508079148cb87cdfa55825
• https://git.kernel.org/stable/c/2ddc09f6a0a221b1d91a7cbc8cc2cefdbd334fe6
• https://git.kernel.org/stable/c/54de72a7aabc0749938d7a2833a0c1a5d3ed7ac9
• https://git.kernel.org/stable/c/6602bb4d1338e92b5838e50322b87697bdbd2ee0
• https://git.kernel.org/stable/c/9391380eb91ea5ac792aae9273535c8da5b9aa01
• https://git.kernel.org/stable/c/948615429c9f2ac9d25d4e1f1a4472926b217a9a
• https://git.kernel.org/stable/c/b1217e40705b2f6d311c197b12866752656217ff

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