m68k: nfcon: Do not call console_is_registered() in nfcon_device()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90158
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:08 UTC
Updated2026-09-17 17:17:08 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: m68k: nfcon: Do not call console_is_registered() in nfcon_device() Since 7c2af0f634f1 ("tty: tty_io: use console_list_lock for list synchronization") show_cons_active() calls the .device() method under the console_list_lock, but console_is_registered() tries to acquire console_list_lock as well, causing a deadlock. It should not be necessary to check console_is_registered() here since the function should not be called in the fist place when the console is not registered.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7c2af0f634f1bc761ca827310dc7e8e586af502f 7d3f15a664d115584fc177b5f2cfbdb3e5a50d60 git Not specified
CNA Linux Linux affected 7c2af0f634f1bc761ca827310dc7e8e586af502f e5e11274b5512e24a346ed83f8dd85e3389d2f4b git Not specified
CNA Linux Linux affected 7c2af0f634f1bc761ca827310dc7e8e586af502f be98f92fc244688a6bdecbc834cf2cd243056d9d git Not specified
CNA Linux Linux affected 7c2af0f634f1bc761ca827310dc7e8e586af502f d73441232f1f067eb659e94447b1353c16609711 git Not specified
CNA Linux Linux affected 7c2af0f634f1bc761ca827310dc7e8e586af502f 2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5 git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d73441232f1f067eb659e94447b1353c16609711 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7d3f15a664d115584fc177b5f2cfbdb3e5a50d60 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/be98f92fc244688a6bdecbc834cf2cd243056d9d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e5e11274b5512e24a346ed83f8dd85e3389d2f4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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