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

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Summary

CVECVE-2026-98834
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:37 UTC
Updated2026-10-19 10:19:47 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9 cecf007418b93a2cbc94269e07fe2fb28f54d8fb git Not specified
CNA Linux Linux affected e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9 26300879cd8e4612dce66bb8f6ff7cd35fcf3e59 git Not specified
CNA Linux Linux affected 6d1af517817a760d7af3dee0fc4603645485495c git Not specified
CNA Linux Linux affected f1b4affca1e13706ca2eb075bf6775421236d7d1 git Not specified
CNA Linux Linux affected 949476b8601bde5459048eebdf457c9db20addd8 git Not specified
CNA Linux Linux affected dd6c85f98ff33b009b819090268cbf679dc208b9 git Not specified
CNA Linux Linux affected 5.15.111 5.16 semver Not specified
CNA Linux Linux affected 6.1.28 6.2 semver Not specified
CNA Linux Linux affected 6.2.15 6.3 semver Not specified
CNA Linux Linux affected 6.3.2 6.4 semver Not specified
CNA Linux Linux affected 6.4 Not specified
CNA Linux Linux unaffected 6.4 semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/26300879cd8e4612dce66bb8f6ff7cd35fcf3e59 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cecf007418b93a2cbc94269e07fe2fb28f54d8fb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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