{"id":"CVE-2026-98000","state":"PUBLISHED","title":"hwmon: Fix potential UAF in pec_store","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: Fix potential UAF in pec_store\n\nSashiko reports:\n\nIn pec_store(), a guard(mutex)(&hwdev->lock) is taken. If the chip write\noperation returns an error other than -EOPNOTSUPP, the code jumps to the\nput label, which calls put_device(hdev). If this drops the final reference,\nthe device is freed. When the function then returns, the guard cleanup\nfunction runs and attempts to unlock the freed mutex.\n\nUse scoped_guard() instead of guard() to avoid the problem.","publishedAt":"2026-09-25T10:23:28.703Z","updatedAt":"2026-10-19T09:12:06.063Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"8afab57bcdbc2186f325972e777880ac5a220f4f","versionType":"git"},{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"01dd8b4fc2cf83c66565c0f382fb1841e9000a89","versionType":"git"},{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/hwmon.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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/hwmon/hwmon.c"]}],"references":["https://git.kernel.org/stable/c/8afab57bcdbc2186f325972e777880ac5a220f4f","https://git.kernel.org/stable/c/01dd8b4fc2cf83c66565c0f382fb1841e9000a89","https://git.kernel.org/stable/c/354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98000.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98000","state":"PUBLISHED","datePublished":"2026-09-25T10:23:28.703Z","dateUpdated":"2026-10-19T09:12:06.063Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:19:56.068Z"},"containers":{"cna":{"title":"hwmon: Fix potential UAF in pec_store","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: Fix potential UAF in pec_store\n\nSashiko reports:\n\nIn pec_store(), a guard(mutex)(&hwdev->lock) is taken. If the chip write\noperation returns an error other than -EOPNOTSUPP, the code jumps to the\nput label, which calls put_device(hdev). If this drops the final reference,\nthe device is freed. When the function then returns, the guard cleanup\nfunction runs and attempts to unlock the freed mutex.\n\nUse scoped_guard() instead of guard() to avoid the problem."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"8afab57bcdbc2186f325972e777880ac5a220f4f","versionType":"git"},{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"01dd8b4fc2cf83c66565c0f382fb1841e9000a89","versionType":"git"},{"version":"3ad2a7b9b15d5072139a20be84adb36776eb6c9b","status":"affected","lessThan":"354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/hwmon.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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/hwmon/hwmon.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8afab57bcdbc2186f325972e777880ac5a220f4f"},{"url":"https://git.kernel.org/stable/c/01dd8b4fc2cf83c66565c0f382fb1841e9000a89"},{"url":"https://git.kernel.org/stable/c/354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:12:06.063Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}