CVE-2026-23104
MediumIn the Linux kernel, the following vulnerability has been resolved: ice: fix devlink reload call trace Commit 4da71a77fc3b ("ice: read internal temperature sensor") introduced internal temperature sensor reading via HWMON. ice_hwmon_init() was added to ice_init_feature() and ice_hwmon_exit() was added to ice_remove(). As a result if devlink reload is used to reinit the device and then the driver is removed, a call trace can occur. BUG: unable to handle page fault for address: ffffffffc0fd4b5d Call Trace: string+0x48/0xe0 vsnprintf+0x1f9/0x650 sprintf+0x62/0x80 name_show+0x1f/0x30 dev_attr_show+0x19/0x60 The call trace repeats approximately every 10 minutes when system monitoring tools (e.g., sadc) attempt to read the orphaned hwmon sysfs attributes that reference freed module memory. The sequence is: 1. Driver load, ice_hwmon_init() gets called from ice_init_feature() 2. Devlink reload down, flow does not call ice_remove() 3. Devlink reload up, ice_hwmon_init() gets called from ice_init_feature() resulting in a second instance 4. Driver unload, ice_hwmon_exit() called from ice_remove() leaving the first hwmon instance orphaned with dangling pointer Fix this by moving ice_hwmon_exit() from ice_remove() to ice_deinit_features() to ensure proper cleanup symmetry with ice_hwmon_init().
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected versions
Linux kernel versions
6.8
and later are affected. Fixed in
6.12.78,
6.18.8,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2026-23104 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/87c1dacca197cc64e06fedeb269e3dd6699bae60
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PatchKernel patch commithttps://git.kernel.org/stable/c/8ac7dd0f813fb65ff2fd9543900c3009f8e84110
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PatchKernel patch commithttps://git.kernel.org/stable/c/d3f867e7a04678640ebcbfb81893c59f4af48586
Frequently asked questions
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What is CVE-2026-23104?
CVE-2026-23104 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.8 onward and has been patched in 6.12.78, 6.18.8 and 6.19. CVE-2026-23104 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2026-23104?
CVE-2026-23104 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2026-23104?
Yes — CVE-2026-23104 has been patched. Fixed versions include 6.12.78, 6.18.8 and 6.19. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-23104 actively exploited?
No — CVE-2026-23104 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.