{"id":"CVE-2026-90208","state":"PUBLISHED","title":"clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type\n\nSamsung PWM timer might be used as a clock source on some legacy systems.\nWhen PREEMPT_RT is enabled on ARM, regular spinlock is converted to a\nsleeping lock (mutex-based), which must not be used in atomic context\nsuch as hard interrupt handlers. Switch the samsung_pwm_lock to the\nraw_spinlock, which remains a true non-sleeping spinlock even\nunder PREEMPT_RT.","publishedAt":"2026-09-17T16:07:23.479Z","updatedAt":"2026-10-30T12:34:47.590Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"9c97311a5f5d388eece66fc415167b38f35fe6a1","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"8f823b47eb889ea70f4c360164e96453f40e3646","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"5720fe5cabda19f395d194ca57321c7b85f8af80","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"a25ea67a913f98b8461aff1e9e3a5f6dc2378395","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"7eb5764d25c4ac7f5d126621660f7219b61fd2fd","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"3b212f9d70805d91febae01d618868f4860e267c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clocksource/samsung_pwm_timer.c","drivers/pwm/pwm-samsung.c","include/clocksource/samsung_pwm.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clocksource/samsung_pwm_timer.c","drivers/pwm/pwm-samsung.c","include/clocksource/samsung_pwm.h"]}],"references":["https://git.kernel.org/stable/c/9c97311a5f5d388eece66fc415167b38f35fe6a1","https://git.kernel.org/stable/c/8f823b47eb889ea70f4c360164e96453f40e3646","https://git.kernel.org/stable/c/5720fe5cabda19f395d194ca57321c7b85f8af80","https://git.kernel.org/stable/c/a25ea67a913f98b8461aff1e9e3a5f6dc2378395","https://git.kernel.org/stable/c/7eb5764d25c4ac7f5d126621660f7219b61fd2fd","https://git.kernel.org/stable/c/3b212f9d70805d91febae01d618868f4860e267c"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90208.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90208","state":"PUBLISHED","datePublished":"2026-09-17T16:07:23.479Z","dateUpdated":"2026-10-30T12:34:47.590Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.793Z"},"containers":{"cna":{"title":"clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type\n\nSamsung PWM timer might be used as a clock source on some legacy systems.\nWhen PREEMPT_RT is enabled on ARM, regular spinlock is converted to a\nsleeping lock (mutex-based), which must not be used in atomic context\nsuch as hard interrupt handlers. Switch the samsung_pwm_lock to the\nraw_spinlock, which remains a true non-sleeping spinlock even\nunder PREEMPT_RT."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"9c97311a5f5d388eece66fc415167b38f35fe6a1","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"8f823b47eb889ea70f4c360164e96453f40e3646","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"5720fe5cabda19f395d194ca57321c7b85f8af80","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"a25ea67a913f98b8461aff1e9e3a5f6dc2378395","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"7eb5764d25c4ac7f5d126621660f7219b61fd2fd","versionType":"git"},{"version":"f11899894c0a683c754ca71b45f7c9c3d35a3a1c","status":"affected","lessThan":"3b212f9d70805d91febae01d618868f4860e267c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clocksource/samsung_pwm_timer.c","drivers/pwm/pwm-samsung.c","include/clocksource/samsung_pwm.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clocksource/samsung_pwm_timer.c","drivers/pwm/pwm-samsung.c","include/clocksource/samsung_pwm.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/9c97311a5f5d388eece66fc415167b38f35fe6a1"},{"url":"https://git.kernel.org/stable/c/8f823b47eb889ea70f4c360164e96453f40e3646"},{"url":"https://git.kernel.org/stable/c/5720fe5cabda19f395d194ca57321c7b85f8af80"},{"url":"https://git.kernel.org/stable/c/a25ea67a913f98b8461aff1e9e3a5f6dc2378395"},{"url":"https://git.kernel.org/stable/c/7eb5764d25c4ac7f5d126621660f7219b61fd2fd"},{"url":"https://git.kernel.org/stable/c/3b212f9d70805d91febae01d618868f4860e267c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:34:47.590Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}