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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-38416
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-07-25 14:15:33 UTC
Updated2026-07-30 06:23:13 UTC
DescriptionIn 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().

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 a514fca2b8e95838a3ba600f31a18fa60b76d893 git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 000bfbc6bc334a93fffca8f5aa9583e7b6356cb5 git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 ac6992f72bd8e22679c1e147ac214de6a7093c23 git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 dc7722619a9c307e9938d735cf4a2210d3d48dcb git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 a8acc7080ad55c5402a1b818b3008998247dda87 git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 55c3dbd8389636161090a2b2b6d2d709b9602e9c git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 e9799db771b2d574d5bf0dfb3177485e5f40d4d6 git Not specified
CNA Linux Linux affected 9961127d4bce6325e9a0b0fb105e0c85a6c62cb7 fc27ab48904ceb7e4792f0c400f1ef175edf16fe git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 5.4.295 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.239 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.186 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.142 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.95 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.35 6.12.* semver Not specified
CNA Linux Linux unaffected 6.15.4 6.15.* semver Not specified
CNA Linux Linux unaffected 6.16 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16fe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
git.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00007.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
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