{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-68758", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-68758", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2026-01-05T09:32:31.399Z", "updatedAt": "2026-05-11T21:52:46.981Z", "importedAt": "2026-10-24T01:57:44.935Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "backlight: led-bl: Add devlink to supplier LEDs", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbacklight: led-bl: Add devlink to supplier LEDs\n\nLED Backlight is a consumer of one or multiple LED class devices, but\ndevlink is currently unable to create correct supplier-producer links when\nthe supplier is a class device. It creates instead a link where the\nsupplier is the parent of the expected device.\n\nOne consequence is that removal order is not correctly enforced.\n\nIssues happen for example with the following sections in a device tree\noverlay:\n\n // An LED driver chip\n pca9632@62 {\n compatible = \"nxp,pca9632\";\n reg = <0x62>;\n\n\t// ...\n\n addon_led_pwm: led-pwm@3 {\n reg = <3>;\n label = \"addon:led:pwm\";\n };\n };\n\n backlight-addon {\n compatible = \"led-backlight\";\n leds = <&addon_led_pwm>;\n brightness-levels = <255>;\n default-brightness-level = <255>;\n };\n\nIn this example, the devlink should be created between the backlight-addon\n(consumer) and the pca9632@62 (supplier). Instead it is created between the\nbacklight-addon (consumer) and the parent of the pca9632@62, which is\ntypically the I2C bus adapter.\n\nOn removal of the above overlay, the LED driver can be removed before the\nbacklight device, resulting in:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010\n ...\n Call trace:\n led_put+0xe0/0x140\n devm_led_release+0x6c/0x98\n\nAnother way to reproduce the bug without any device tree overlays is\nunbinding the LED class device (pca9632@62) before unbinding the consumer\n(backlight-addon):\n\n echo 11-0062 >/sys/bus/i2c/drivers/leds-pca963x/unbind\n echo ...backlight-dock >/sys/bus/platform/drivers/led-backlight/unbind\n\nFix by adding a devlink between the consuming led-backlight device and the\nsupplying LED device, as other drivers and subsystems do as well.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "64739adf3eef063b8e2c72b7e919eac8c6480bf0" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "cd01a24b3e52d6777b49c917d841f125fe9eebd0" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "e06df738a9ad8417f1c4c7cd6992cda320e9e7ca" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "30cbe4b642745a9488a0f0d78be43afe69d7555c" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "0e63ea4378489e09eb5e920c8a50c10caacf563a" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "60a24070392ec726ccfe6ad1ca7b0381c8d8f7c9" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "08c9dc6b0f2c68e5e7c374ac4499e321e435d46c" }, { "version": "ae232e45acf9621f2c96b41ca3af006ac7552c33", "status": "affected", "versionType": "git", "lessThan": "9341d6698f4cfdfc374fb6944158d111ebe16a9d" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.6" }, { "version": "5.10.248", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.198", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.160", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.120", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.63", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.17.13", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.17.*" }, { "version": "6.18.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }