Bug 2451229 (CVE-2026-23387)

Summary: CVE-2026-23387 kernel: pinctrl: cirrus: cs42l43: Fix double-put in cs42l43_pin_probe()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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OS: Linux   
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A flaw was found in the Linux kernel, specifically within the `pinctrl` subsystem's `cirrus cs42l43` driver. This flaw involves a 'double-put' error in the `cs42l43_pin_probe()` function, where a resource is incorrectly released twice. This issue arises because the `devm_add_action_or_reset()` function already handles resource cleanup, leading to a redundant release. Exploiting this vulnerability could lead to memory corruption, potentially causing a system crash or denial of service (DoS).
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Description OSIDB Bzimport 2026-03-25 11:05:55 UTC 
In the Linux kernel, the following vulnerability has been resolved:

pinctrl: cirrus: cs42l43: Fix double-put in cs42l43_pin_probe()

devm_add_action_or_reset() already invokes the action on failure,
so the explicit put causes a double-put.
Comment 1 Alexander B 2026-03-25 14:38:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032544-CVE-2026-23387-4399@gregkh/T