{"id":"CVE-2025-71199","state":"PUBLISHED","title":"iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver\n\nat91_adc_interrupt can call at91_adc_touch_data_handler function\nto start the work by schedule_work(&st->touch_st.workq).\n\nIf we remove the module which will call at91_adc_remove to\nmake cleanup, it will free indio_dev through iio_device_unregister but\nquite a bit later. While the work mentioned above will be used. The\nsequence of operations that may lead to a UAF bug is as follows:\n\nCPU0                                      CPU1\n\n                                     | at91_adc_workq_handler\nat91_adc_remove                      |\niio_device_unregister(indio_dev)     |\n//free indio_dev a bit later         |\n                                     | iio_push_to_buffers(indio_dev)\n                                     | //use indio_dev\n\nFix it by ensuring that the work is canceled before proceeding with\nthe cleanup in at91_adc_remove.","publishedAt":"2026-02-04T16:07:34.062Z","updatedAt":"2026-05-11T21:56:34.681Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"4c83dd62595ee7b7c9298a4d19a256b6647e7240","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"fdc8c835c637a3473878d1e7438c77ab8928af63","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"919d176b05776c7ede79c36744c823a07d631617","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"9795fe80976f8c31cafda7d44edfc0f532d1f7c4","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"d7b6fc224c7f5d6d8adcb18037138d3cfe2bbdfe","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"d890234a91570542c228a20f132ce74f9fedd904","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"dbdb442218cd9d613adeab31a88ac973f22c4873","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/at91-sama5d2_adc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.249","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.199","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.68","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.8","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/at91-sama5d2_adc.c"]}],"references":["https://git.kernel.org/stable/c/4c83dd62595ee7b7c9298a4d19a256b6647e7240","https://git.kernel.org/stable/c/fdc8c835c637a3473878d1e7438c77ab8928af63","https://git.kernel.org/stable/c/919d176b05776c7ede79c36744c823a07d631617","https://git.kernel.org/stable/c/9795fe80976f8c31cafda7d44edfc0f532d1f7c4","https://git.kernel.org/stable/c/d7b6fc224c7f5d6d8adcb18037138d3cfe2bbdfe","https://git.kernel.org/stable/c/d890234a91570542c228a20f132ce74f9fedd904","https://git.kernel.org/stable/c/dbdb442218cd9d613adeab31a88ac973f22c4873"],"weaknesses":[],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71199.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71199","state":"PUBLISHED","datePublished":"2026-02-04T16:07:34.062Z","dateUpdated":"2026-05-11T21:56:34.681Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-31T11:36:51.192Z"},"containers":{"cna":{"title":"iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver\n\nat91_adc_interrupt can call at91_adc_touch_data_handler function\nto start the work by schedule_work(&st->touch_st.workq).\n\nIf we remove the module which will call at91_adc_remove to\nmake cleanup, it will free indio_dev through iio_device_unregister but\nquite a bit later. While the work mentioned above will be used. The\nsequence of operations that may lead to a UAF bug is as follows:\n\nCPU0                                      CPU1\n\n                                     | at91_adc_workq_handler\nat91_adc_remove                      |\niio_device_unregister(indio_dev)     |\n//free indio_dev a bit later         |\n                                     | iio_push_to_buffers(indio_dev)\n                                     | //use indio_dev\n\nFix it by ensuring that the work is canceled before proceeding with\nthe cleanup in at91_adc_remove."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"4c83dd62595ee7b7c9298a4d19a256b6647e7240","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"fdc8c835c637a3473878d1e7438c77ab8928af63","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"919d176b05776c7ede79c36744c823a07d631617","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"9795fe80976f8c31cafda7d44edfc0f532d1f7c4","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"d7b6fc224c7f5d6d8adcb18037138d3cfe2bbdfe","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"d890234a91570542c228a20f132ce74f9fedd904","versionType":"git"},{"version":"23ec2774f1cc168b1f32a2e0ed2709cb473bb94e","status":"affected","lessThan":"dbdb442218cd9d613adeab31a88ac973f22c4873","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/at91-sama5d2_adc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.249","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.199","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.68","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.8","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/at91-sama5d2_adc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4c83dd62595ee7b7c9298a4d19a256b6647e7240"},{"url":"https://git.kernel.org/stable/c/fdc8c835c637a3473878d1e7438c77ab8928af63"},{"url":"https://git.kernel.org/stable/c/919d176b05776c7ede79c36744c823a07d631617"},{"url":"https://git.kernel.org/stable/c/9795fe80976f8c31cafda7d44edfc0f532d1f7c4"},{"url":"https://git.kernel.org/stable/c/d7b6fc224c7f5d6d8adcb18037138d3cfe2bbdfe"},{"url":"https://git.kernel.org/stable/c/d890234a91570542c228a20f132ce74f9fedd904"},{"url":"https://git.kernel.org/stable/c/dbdb442218cd9d613adeab31a88ac973f22c4873"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:56:34.681Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.249"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.199"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.68"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}