{"id":"CVE-2026-98834","state":"PUBLISHED","title":"mtd: core: avoid double-free of OTP NVMEM device","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: avoid double-free of OTP NVMEM device\n\nIf factory OTP setup fails after the user OTP NVMEM device has been\nregistered, mtd_otp_nvmem_add() unregisters the user device but leaves\nmtd->otp_user_nvmem set. On an error, the caller unregisters it again.\nFor -EOPNOTSUPP, registration continues and normal teardown unregisters\nit again.\n\nClear mtd->otp_user_nvmem after unregistering it.","publishedAt":"2026-10-18T15:49:46.003Z","updatedAt":"2026-10-19T09:26:26.676Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9","status":"affected","lessThan":"cecf007418b93a2cbc94269e07fe2fb28f54d8fb","versionType":"git"},{"version":"e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9","status":"affected","lessThan":"26300879cd8e4612dce66bb8f6ff7cd35fcf3e59","versionType":"git"},{"version":"6d1af517817a760d7af3dee0fc4603645485495c","status":"affected","versionType":"git"},{"version":"f1b4affca1e13706ca2eb075bf6775421236d7d1","status":"affected","versionType":"git"},{"version":"949476b8601bde5459048eebdf457c9db20addd8","status":"affected","versionType":"git"},{"version":"dd6c85f98ff33b009b819090268cbf679dc208b9","status":"affected","versionType":"git"},{"version":"5.15.111","status":"affected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.28","status":"affected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.15","status":"affected","lessThan":"6.3","versionType":"semver"},{"version":"6.3.2","status":"affected","lessThan":"6.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/mtdcore.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/mtdcore.c"]}],"references":["https://git.kernel.org/stable/c/cecf007418b93a2cbc94269e07fe2fb28f54d8fb","https://git.kernel.org/stable/c/26300879cd8e4612dce66bb8f6ff7cd35fcf3e59"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98834.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98834","state":"PUBLISHED","datePublished":"2026-10-18T15:49:46.003Z","dateUpdated":"2026-10-19T09:26:26.676Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.372Z"},"containers":{"cna":{"title":"mtd: core: avoid double-free of OTP NVMEM device","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: avoid double-free of OTP NVMEM device\n\nIf factory OTP setup fails after the user OTP NVMEM device has been\nregistered, mtd_otp_nvmem_add() unregisters the user device but leaves\nmtd->otp_user_nvmem set. On an error, the caller unregisters it again.\nFor -EOPNOTSUPP, registration continues and normal teardown unregisters\nit again.\n\nClear mtd->otp_user_nvmem after unregistering it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9","status":"affected","lessThan":"cecf007418b93a2cbc94269e07fe2fb28f54d8fb","versionType":"git"},{"version":"e0489f6e221f5ddee6cb3bd51b992b790c5fa4b9","status":"affected","lessThan":"26300879cd8e4612dce66bb8f6ff7cd35fcf3e59","versionType":"git"},{"version":"6d1af517817a760d7af3dee0fc4603645485495c","status":"affected","versionType":"git"},{"version":"f1b4affca1e13706ca2eb075bf6775421236d7d1","status":"affected","versionType":"git"},{"version":"949476b8601bde5459048eebdf457c9db20addd8","status":"affected","versionType":"git"},{"version":"dd6c85f98ff33b009b819090268cbf679dc208b9","status":"affected","versionType":"git"},{"version":"5.15.111","status":"affected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.28","status":"affected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.15","status":"affected","lessThan":"6.3","versionType":"semver"},{"version":"6.3.2","status":"affected","lessThan":"6.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/mtdcore.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/mtdcore.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cecf007418b93a2cbc94269e07fe2fb28f54d8fb"},{"url":"https://git.kernel.org/stable/c/26300879cd8e4612dce66bb8f6ff7cd35fcf3e59"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:26:26.676Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}