CVE-2023-53298: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 3.13, before 4.14.308 (fixed in 4.14.308); from 4.15, before 4.19.276 (fixed in 4.19.276); from 4.20, before 5.4.235 (fixed in 5.4.235); from 5.5, before 5.10.173 (fixed in 5.10.173); from 5.11, before 5.15.100 (fixed in 5.15.100); from 5.16, before 6.1.18 (fixed in 6.1.18); …

Published 2025-09-16. Last modified 2026-06-17.