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TI-2026-75962 Aliases CVE-2026-98834GHSA-cqw6-frjh-g7f6

Double free of OTP NVMEM device in Linux kernel MTD core

Priority LOW 22Published · Updated

Key facts

Attack vector
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Privileges required
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User interaction
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Attack complexity
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Impact type
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Confidentiality · integrity · availability
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Fix status
Partial Red Hat: 2 without a fix

No CVSS vector from any source. Fix status from CNA and Red Hat.

Summary

The Linux kernel MTD core is affected in versions from 5.15.111 before 5.16, from 6.1.28 before 6.2, from 6.2.15 before 6.3, from 6.3.2 before 6.4, and from 6.4. If factory OTP setup fails after the user OTP NVMEM device is registered, mtd_otp_nvmem_add unregisters that device but leaves its pointer set, so the caller or normal teardown unregisters it a second time. This double free is a memory corruption flaw in the kernel.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

EPSS 0.00155 4th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.16, 6.2, 6.3 +3Red Hat: 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15.111 to before 5.16; 6.1.28 to before 6.2; 6.2.15 to before 6.3; 6.3.2 to before 6.45.16, 6.2, 6.3, 6.4Patch availableCNA
LinuxLinux6.4 and later7.2.10, 7.3Patch availableCNA
  • Linux VendorLinux Affected 5.15.111 to before 5.16; 6.1.28 to before 6.2; 6.2.15 to before 6.3; 6.3.2 to before 6.4 Fixed in 5.16, 6.2, 6.3, 6.4 Patch available CNA
  • Linux VendorLinux Affected 6.4 and later Fixed in 7.2.10, 7.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

The Linux kernel is fixed in versions 5.16, 6.2, 6.3, 6.4, 7.2.10 and 7.3. Red Hat Enterprise Linux 10 has no fix available, and Red Hat Enterprise Linux 6 has no fix planned.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Linux (Linux) Fixed in 5.16, 6.2, 6.3, 6.4
  • Fix · CNA Linux (Linux) Fixed in 7.2.10, 7.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Not affected: 5 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-98834
  2. 2026-10-18 Alias added: GHSA-cqw6-frjh-g7f6
  3. 2026-10-19 Fix available: Linux/[email protected] · CNA
  4. 2026-10-24 Affected versions changed · Red Hat
  5. 2026-10-24 CVSS score added · Red Hat
  6. 2026-11-06 Affected versions changed · Red Hat

References

Other 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21727 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences