{"id":"CVE-2026-23104","title":"ice: fix devlink reload call trace","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix devlink reload call trace\n\nCommit 4da71a77fc3b (\"ice: read internal temperature sensor\") introduced\ninternal temperature sensor reading via HWMON. ice_hwmon_in…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < 8ac7dd0f813fb65ff2fd9543900c3009f8e84110","Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < 87c1dacca197cc64e06fedeb269e3dd6699bae60","Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < d3f867e7a04678640ebcbfb81893c59f4af48586","Linux 6.8"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:19:26.890511Z"},"published":"2026-02-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:23:17.100Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23104","references":[{"url":"https://git.kernel.org/stable/c/8ac7dd0f813fb65ff2fd9543900c3009f8e84110"},{"url":"https://git.kernel.org/stable/c/87c1dacca197cc64e06fedeb269e3dd6699bae60"},{"url":"https://git.kernel.org/stable/c/d3f867e7a04678640ebcbfb81893c59f4af48586"}],"tags":["cve.org"],"epss":0.00135,"epssPercentile":0.02981,"ingestedAt":"2026-11-05T22:38:32.071Z","slug":"CVE-2026-23104","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nice: fix devlink reload call trace\n\nCommit 4da71a77fc3b (\"ice: read internal temperature sensor\") introduced\ninternal temperature sensor reading via HWMON. ice_hwmon_init() was added\nto ice_init_feature() and ice_hwmon_exit() was added to ice_remove(). As a\nresult if devlink reload is used to reinit the device and then the driver\nis removed, a call trace can occur.\n\nBUG: unable to handle page fault for address: ffffffffc0fd4b5d\nCall Trace:\n string+0x48/0xe0\n vsnprintf+0x1f9/0x650\n sprintf+0x62/0x80\n name_show+0x1f/0x30\n dev_attr_show+0x19/0x60\n\nThe call trace repeats approximately every 10 minutes when system\nmonitoring tools (e.g., sadc) attempt to read the orphaned hwmon sysfs\nattributes that reference freed module memory.\n\nThe sequence is:\n1. Driver load, ice_hwmon_init() gets called from ice_init_feature()\n2. Devlink reload down, flow does not call ice_remove()\n3. Devlink reload up, ice_hwmon_init() gets called from\n   ice_init_feature() resulting in a second instance\n4. Driver unload, ice_hwmon_exit() called from ice_remove() leaving the\n   first hwmon instance orphaned with dangling pointer\n\nFix this by moving ice_hwmon_exit() from ice_remove() to\nice_deinit_features() to ensure proper cleanup symmetry with\nice_hwmon_init().\n\n## Affected\n\n- `Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < 8ac7dd0f813fb65ff2fd9543900c3009f8e84110`\n- `Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < 87c1dacca197cc64e06fedeb269e3dd6699bae60`\n- `Linux >= 4da71a77fc3be1fcb680c8d78e1a1fb8017905ad < d3f867e7a04678640ebcbfb81893c59f4af48586`\n- `Linux 6.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}