Bug 2555247 (CVE-2026-98834) - CVE-2026-98834 kernel: mtd: core: avoid double-free of OTP NVMEM device
Summary: CVE-2026-98834 kernel: mtd: core: avoid double-free of OTP NVMEM device
Keywords:
Status: NEW
Alias: CVE-2026-98834
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 16:04 UTC by OSIDB Bzimport
Modified: 2026-10-23 21:13 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-18 16:04:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

mtd: core: avoid double-free of OTP NVMEM device

If factory OTP setup fails after the user OTP NVMEM device has been
registered, mtd_otp_nvmem_add() unregisters the user device but leaves
mtd->otp_user_nvmem set. On an error, the caller unregisters it again.
For -EOPNOTSUPP, registration continues and normal teardown unregisters
it again.

Clear mtd->otp_user_nvmem after unregistering it.
Comment 1 Mauro Matteo Cascella 2026-10-23 21:09:07 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98834.mbox
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