# CVE-2026-98834: mtd: core: avoid double-free of OTP NVMEM device

CVE-2026-98834 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98834 (version 7.2.10-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98834
- Priority: Routine
- CVSS: 6.4 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 18, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98834

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.10-1 | [DEBIAN-CVE-2026-98834](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98834.md) | Oct 19, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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