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Medium severity5.5NVD Advisory· Published Sep 16, 2025· Updated Jun 17, 2026

CVE-2023-53298

CVE-2023-53298

Description

In the Linux kernel, the following vulnerability has been resolved:

nfc: fix memory leak of se_io context in nfc_genl_se_io

The callback context for sending/receiving APDUs to/from the selected secure element is allocated inside nfc_genl_se_io and supposed to be eventually freed in se_io_cb callback function. However, there are several error paths where the bwi_timer is not charged to call se_io_cb later, and the cb_context is leaked.

The patch proposes to free the cb_context explicitly on those error paths.

At the moment we can't simply check 'dev->ops->se_io()' return value as it may be negative in both cases: when the timer was charged and was not.

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Affected products

95

Patches

Vulnerability mechanics

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