CVE-2023-53298

nfc: fix memory leak of se_io context in nfc_genl_se_io

State: Published
Severity: 5.5 Medium
Published: Sep 16, 2025
Updated: May 11, 2026
Reserved: Sep 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	5ce3f32b5264b337bfd13a780452a17705307725 to before 5321da6d84b87a34eea441677d649c34bd854169Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before af452e35b9e6a87cd49e54a7a3d60d934b194651Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before 271eed1736426103335c5aac50f15b0f4d236bc0Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before 8978315cb4bf8878c9c8ec05dafd8f7ff539860dAffected 5ce3f32b5264b337bfd13a780452a17705307725 to before c494365432dcdc549986f4d9af9eb6190cbdb153Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before b2036a252381949d3b743a3de069324ae3028a57Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before ba98db08895748c12e5ded52cd1598dce2c79e55Affected 5ce3f32b5264b337bfd13a780452a17705307725 to before 25ff6f8a5a3b8dc48e8abda6f013e8cc4b14ffeaAffected
LinuxLinux	3.13Affected before 3.13Not affected 4.14.308 through 4.14.Not affected 4.19.276 through 4.19.Not affected 5.4.235 through 5.4.Not affected 5.10.173 through 5.10.Not affected 5.15.100 through 5.15.Not affected 6.1.18 through 6.1.Not affected 6.2.5 through 6.2.*Not affected 6.3 and laterNot affected

Product

Versions

LinuxLinux

5ce3f32b5264b337bfd13a780452a17705307725 to before 5321da6d84b87a34eea441677d649c34bd854169Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before af452e35b9e6a87cd49e54a7a3d60d934b194651Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before 271eed1736426103335c5aac50f15b0f4d236bc0Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before 8978315cb4bf8878c9c8ec05dafd8f7ff539860dAffected
5ce3f32b5264b337bfd13a780452a17705307725 to before c494365432dcdc549986f4d9af9eb6190cbdb153Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before b2036a252381949d3b743a3de069324ae3028a57Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before ba98db08895748c12e5ded52cd1598dce2c79e55Affected
5ce3f32b5264b337bfd13a780452a17705307725 to before 25ff6f8a5a3b8dc48e8abda6f013e8cc4b14ffeaAffected

LinuxLinux

3.13Affected
before 3.13Not affected
4.14.308 through 4.14.*Not affected
4.19.276 through 4.19.*Not affected
5.4.235 through 5.4.*Not affected
5.10.173 through 5.10.*Not affected
5.15.100 through 5.15.*Not affected
6.1.18 through 6.1.*Not affected
6.2.5 through 6.2.*Not affected
6.3 and laterNot affected

References

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