{"id":"CVE-2024-26814","state":"PUBLISHED","title":"vfio/fsl-mc: Block calling interrupt handler without trigger","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged.","publishedAt":"2024-04-05T08:24:43.916Z","updatedAt":"2026-05-11T20:04:41.551Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"a563fc18583ca4f42e2fdd0c70c7c618288e7ede","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"250219c6a556f8c69c5910fca05a59037e24147d","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"083e750c9f5f4c3bf61161330fb84d7c8e8bb417","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"ee0bd4ad780dfbb60355b99f25063357ab488267","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"de87511fb0404d23b6da5f4660383b6ed095e28d","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"6ec0d88166dac43f29e96801c0927d514f17add9","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"7447d911af699a15f8d050dfcb7c680a86f87012","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.215","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.154","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.84","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.24","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.12","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.3","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c"]}],"references":["https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede","https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d","https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417","https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267","https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d","https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9","https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26814.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26814","state":"PUBLISHED","datePublished":"2024-04-05T08:24:43.916Z","dateUpdated":"2026-05-11T20:04:41.551Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.180Z"},"containers":{"cna":{"title":"vfio/fsl-mc: Block calling interrupt handler without trigger","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"a563fc18583ca4f42e2fdd0c70c7c618288e7ede","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"250219c6a556f8c69c5910fca05a59037e24147d","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"083e750c9f5f4c3bf61161330fb84d7c8e8bb417","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"ee0bd4ad780dfbb60355b99f25063357ab488267","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"de87511fb0404d23b6da5f4660383b6ed095e28d","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"6ec0d88166dac43f29e96801c0927d514f17add9","versionType":"git"},{"version":"cc0ee20bd96971c10eba9a83ecf1c0733078a083","status":"affected","lessThan":"7447d911af699a15f8d050dfcb7c680a86f87012","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.215","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.154","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.84","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.24","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.12","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.3","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede"},{"url":"https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d"},{"url":"https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417"},{"url":"https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267"},{"url":"https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d"},{"url":"https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9"},{"url":"https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:04:41.551Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.215"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.84"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.7.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.8.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE 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