{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98094","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:19:56.076Z","datePublished":"2026-09-25T10:24:25.889Z","dateUpdated":"2026-10-03T11:02:19.177Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-03T11:02:19.177Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: fbtft: make dirty_lock IRQ-safe\n\nfbtft_mkdirty() can be reached from the fbcon rendering path while\nprocessing printk() in hardirq context. Meanwhile, dirty_lock is also\ntaken by fbtft_deferred_io() in workqueue context with local interrupts\nenabled.\n\nLockdep reports a possible IRQ lock inversion involving dirty_lock and\nconsole_owner. A hardirq can interrupt a CPU holding dirty_lock and\nenter the console rendering path, which can attempt to acquire\ndirty_lock again.\n\nThe following lockdep report was observed on an RK3566 system with\nCONFIG_PROVE_LOCKING enabled:\n\n  WARNING: possible irq lock inversion dependency detected\n  swapper/2/0 just changed the state of lock:\n  (console_owner){-...}-{0:0}\n  but this lock took another, HARDIRQ-unsafe lock in the past:\n  (&par->dirty_lock){+.+.}-{2:2}\n\n  CPU0                    CPU1\n  ----                    ----\n  lock(&par->dirty_lock);\n                         local_irq_disable();\n                         lock(console_owner);\n                         lock(&par->dirty_lock);\n  <Interrupt>\n    lock(console_owner);\n\n  *** DEADLOCK ***\n\nUse spin_lock_irqsave() for fbtft_mkdirty() and spin_lock_irq() for\nfbtft_deferred_io(). They only access the dirty line range, so the\nIRQ-off regions remain short."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/fbtft/fbtft-core.c"],"versions":[{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"0843298b159599ee7bc6d14800efdb4bc7349706","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"a323066337ed85c38decfc7f6bbf42f27605dff1","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"f2451e18826eb6a33ea51419f39bdd2eb99fa1ea","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"10cc145b873670438d3b105133dffdae70822db6","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"2a609e29efbba79f9abd68c4ec8a2bd7ecf291e7","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"f0c869df2c33793c8828acaab3e4a5e0176f9f00","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"dcb48fde8003492256dee45815144aa5ed26ce7c","status":"affected","versionType":"git"},{"version":"c296d5f9957c03994a699d6739c27d4581a9f6c7","lessThan":"f576944a59f31bcffff121117ebf452c5dd162b7","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/fbtft/fbtft-core.c"],"versions":[{"version":"4.0","status":"affected"},{"version":"0","lessThan":"4.0","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"7.3-rc2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0843298b159599ee7bc6d14800efdb4bc7349706"},{"url":"https://git.kernel.org/stable/c/a323066337ed85c38decfc7f6bbf42f27605dff1"},{"url":"https://git.kernel.org/stable/c/f2451e18826eb6a33ea51419f39bdd2eb99fa1ea"},{"url":"https://git.kernel.org/stable/c/10cc145b873670438d3b105133dffdae70822db6"},{"url":"https://git.kernel.org/stable/c/2a609e29efbba79f9abd68c4ec8a2bd7ecf291e7"},{"url":"https://git.kernel.org/stable/c/f0c869df2c33793c8828acaab3e4a5e0176f9f00"},{"url":"https://git.kernel.org/stable/c/dcb48fde8003492256dee45815144aa5ed26ce7c"},{"url":"https://git.kernel.org/stable/c/f576944a59f31bcffff121117ebf452c5dd162b7"}],"title":"staging: fbtft: make dirty_lock IRQ-safe","x_generator":{"engine":"bippy-1.2.0"}}}}