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7.8
CVE-2025-38416: Linux Kernel Bug: NFC Driver May Freeze or Corrupt Data
CVE-2025-38416
Summary
A bug in the Linux kernel's NFC driver could cause data corruption or freeze the system if a device starts sending data before the driver is fully initialized. This issue has been resolved in the latest kernel updates. To ensure you have the latest security patches, update your Linux kernel to the latest version.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel |
>= 4.2, < 5.4.295 >= 5.5, < 5.10.239 >= 5.11, < 5.15.186 >= 5.16, < 6.1.142 >= 6.2, < 6.6.95 >= 6.7, < 6.12.35 >= 6.13, < 6.15.4 6.16 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| debian | debian_linux |
11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
Original title
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
c...
Original 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().
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().
nvd CVSS3.1
7.8
- https://git.kernel.org/stable/c/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5 Patch
- https://git.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9c Patch
- https://git.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893 Patch
- https://git.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87 Patch
- https://git.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23 Patch
- https://git.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcb Patch
- https://git.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6 Patch
- https://git.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16fe Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory Mailing List
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory Mailing List
Published: 25 Jul 2025 · Updated: 26 Jun 2026 · First seen: 7 Mar 2026