{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23101","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.965Z","datePublished":"2026-02-04T16:08:23.329Z","dateUpdated":"2026-05-11T22:00:04.278Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:00:04.278Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nleds: led-class: Only Add LED to leds_list when it is fully ready\n\nBefore this change the LED was added to leds_list before led_init_core()\ngets called adding it the list before led_classdev.set_brightness_work gets\ninitialized.\n\nThis leaves a window where led_trigger_register() of a LED's default\ntrigger will call led_trigger_set() which calls led_set_brightness()\nwhich in turn will end up queueing the *uninitialized*\nled_classdev.set_brightness_work.\n\nThis race gets hit by the lenovo-thinkpad-t14s EC driver which registers\n2 LEDs with a default trigger provided by snd_ctl_led.ko in quick\nsuccession. The first led_classdev_register() causes an async modprobe of\nsnd_ctl_led to run and that async modprobe manages to exactly hit\nthe window where the second LED is on the leds_list without led_init_core()\nbeing called for it, resulting in:\n\n ------------[ cut here ]------------\n WARNING: CPU: 11 PID: 5608 at kernel/workqueue.c:4234 __flush_work+0x344/0x390\n Hardware name: LENOVO 21N2S01F0B/21N2S01F0B, BIOS N42ET93W (2.23 ) 09/01/2025\n ...\n Call trace:\n  __flush_work+0x344/0x390 (P)\n  flush_work+0x2c/0x50\n  led_trigger_set+0x1c8/0x340\n  led_trigger_register+0x17c/0x1c0\n  led_trigger_register_simple+0x84/0xe8\n  snd_ctl_led_init+0x40/0xf88 [snd_ctl_led]\n  do_one_initcall+0x5c/0x318\n  do_init_module+0x9c/0x2b8\n  load_module+0x7e0/0x998\n\nClose the race window by moving the adding of the LED to leds_list to\nafter the led_init_core() call."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/leds/led-class.c"],"versions":[{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"f7a6df659af777058833802c29b3b7974db5e78a","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"d117fdcb21b05c0e0460261d017b92303cd9ba77","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"e90c861411fc84629a240384b0a72830539d3386","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"2757f7748ce2d0fa44112024907bafb37e104d6e","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"da565bf98c9ad0eabcb09fc97859e0b52f98b7c3","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"78822628165f3d817382f67f91129161159ca234","status":"affected","versionType":"git"},{"version":"d23a22a74fded23a12434c9463fe66cec2b0afcd","lessThan":"d1883cefd31752f0504b94c3bcfa1f6d511d6e87","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/leds/led-class.c"],"versions":[{"version":"3.7","status":"affected"},{"version":"0","lessThan":"3.7","status":"unaffected","versionType":"semver"},{"version":"5.10.249","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.199","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.162","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.122","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.68","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.8","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"3.7","versionEndExcluding":"5.10.249"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.15.199"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.12.68"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.18.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f7a6df659af777058833802c29b3b7974db5e78a"},{"url":"https://git.kernel.org/stable/c/d117fdcb21b05c0e0460261d017b92303cd9ba77"},{"url":"https://git.kernel.org/stable/c/e90c861411fc84629a240384b0a72830539d3386"},{"url":"https://git.kernel.org/stable/c/2757f7748ce2d0fa44112024907bafb37e104d6e"},{"url":"https://git.kernel.org/stable/c/da565bf98c9ad0eabcb09fc97859e0b52f98b7c3"},{"url":"https://git.kernel.org/stable/c/78822628165f3d817382f67f91129161159ca234"},{"url":"https://git.kernel.org/stable/c/d1883cefd31752f0504b94c3bcfa1f6d511d6e87"}],"title":"leds: led-class: Only Add LED to leds_list when it is fully ready","x_generator":{"engine":"bippy-1.2.0"}}}}