CVE-2025-38416

NFC: nci: uart: Set tty->disc_data only in success path

State: Published
Severity: 7.8 High
Published: Jul 25, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

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

NFC: nci: uart: Set tty->disc_data only in success path

Setting tty->disc_data before opening the NCI device means we need to clean it up on error paths. This also opens some short window if device starts sending data, even before NCIUARTSETDRIVER IOCTL succeeded (broken hardware?). Close the window by exposing tty->disc_data only on the success path, when opening of the NCI device and try_module_get() succeeds.

The code differs in error path in one aspect: tty->disc_data won't be ever assigned thus NULL-ified. This however should not be relevant difference, because of "tty->disc_data=NULL" in nci_uart_tty_open().

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before a514fca2b8e95838a3ba600f31a18fa60b76d893Affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before 000bfbc6bc334a93fffca8f5aa9583e7b6356cb5Affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before ac6992f72bd8e22679c1e147ac214de6a7093c23Affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before dc7722619a9c307e9938d735cf4a2210d3d48dcbAffected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before a8acc7080ad55c5402a1b818b3008998247dda87Affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before 55c3dbd8389636161090a2b2b6d2d709b9602e9cAffected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before e9799db771b2d574d5bf0dfb3177485e5f40d4d6Affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before fc27ab48904ceb7e4792f0c400f1ef175edf16feAffected
LinuxLinux	4.2Affected before 4.2Not affected 5.4.295 through 5.4.Not affected 5.10.239 through 5.10.Not affected 5.15.186 through 5.15.Not affected 6.1.142 through 6.1.Not affected 6.6.95 through 6.6.Not affected 6.12.35 through 6.12.Not affected 6.15.4 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before a514fca2b8e95838a3ba600f31a18fa60b76d893Affected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before 000bfbc6bc334a93fffca8f5aa9583e7b6356cb5Affected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before ac6992f72bd8e22679c1e147ac214de6a7093c23Affected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before dc7722619a9c307e9938d735cf4a2210d3d48dcbAffected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before a8acc7080ad55c5402a1b818b3008998247dda87Affected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before 55c3dbd8389636161090a2b2b6d2d709b9602e9cAffected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before e9799db771b2d574d5bf0dfb3177485e5f40d4d6Affected
9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 to before fc27ab48904ceb7e4792f0c400f1ef175edf16feAffected

LinuxLinux

4.2Affected
before 4.2Not affected
5.4.295 through 5.4.*Not affected
5.10.239 through 5.10.*Not affected
5.15.186 through 5.15.*Not affected
6.1.142 through 6.1.*Not affected
6.6.95 through 6.6.*Not affected
6.12.35 through 6.12.*Not affected
6.15.4 through 6.15.*Not affected
6.16 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.