{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98903","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.379Z","datePublished":"2026-10-23T11:54:15.010Z","dateUpdated":"2026-10-26T06:56:31.630Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-26T06:56:31.630Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: imx: Add a channel shutdown field\n\nsashiko complained about possible teardown problem. The scenario\n\n CPU 0                              CPU 1\n  imx_mu_isr()                   imx_mu_shutdown()\n                                   imx_mu_xcr_rmw(priv, IMX_MU_RCR, 0, IMX_MU_xCR_RIEn(priv->dcfg->type, cp->idx));\n    imx_mu_specific_rx()\n      imx_mu_xcr_rmw(priv, IMX_MU_RCR, IMX_MU_xCR_RIEn(priv->dcfg->type, 0), 0);\n                                   free_irq()\n\nThe RX event remains enabled because in this short window the RX event\nwas disabled in ->shutdown() while the interrupt was active and then\nenabled again by the ISR while ->shutdown waited in free_irq().\n\nThis race requires timing and if happens can be problematic on shared\nhandlers if the \"removed\" channel triggers an interrupt. In this case\nthe irq-core will shutdown the interrupt with the \"nobody cared\"\nmessage.\n\nIntroduce imx_mu_con_priv::shutdown to signal that the channel is\nshutting down. This flag is set with the lock held (by\nimx_mu_xcr_clr_shut()). The unmask side uses imx_mu_xcr_set_act() which\nonly enables the event if the channel has not been shutdown and\nserialises on the same lock."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mailbox/imx-mailbox.c"],"versions":[{"version":"0a67003b1985c79811160af1b01aca07cd5fbc53","lessThan":"02273054b2e94e53065ea5644265bb9d8f7ee2a7","status":"affected","versionType":"git"},{"version":"0a67003b1985c79811160af1b01aca07cd5fbc53","lessThan":"944d8509c2220a2313d4a094a646507929fb6f8d","status":"affected","versionType":"git"},{"version":"0a67003b1985c79811160af1b01aca07cd5fbc53","lessThan":"5ccea7eacb7786c358833634f45700365f6c1d99","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/mailbox/imx-mailbox.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","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","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":"5.7","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/02273054b2e94e53065ea5644265bb9d8f7ee2a7"},{"url":"https://git.kernel.org/stable/c/944d8509c2220a2313d4a094a646507929fb6f8d"},{"url":"https://git.kernel.org/stable/c/5ccea7eacb7786c358833634f45700365f6c1d99"}],"title":"mailbox: imx: Add a channel shutdown field","x_generator":{"engine":"bippy-1.2.0"}}}}