{"id":"CVE-2026-98157","state":"PUBLISHED","title":"EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation\n\nThe poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned\nlong, but the target field (poll_msec) is unsigned int. On 64-bit systems,\na value > UINT_MAX is silently truncated when stored.\n\nFix the mismatch by using kstrtouint() instead. This rejects values larger\nthan UINT_MAX at parse time, making truncation impossible. Also add a check\nfor value < 1 to reject the 0-delay case, which would cause the poll work to\nspin without delay and consume 100% CPU.","publishedAt":"2026-09-25T10:36:27.009Z","updatedAt":"2026-10-19T09:14:51.107Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"a60794ee3f453516ab3ed212ba0295ecf890bc8c","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"f856511058c8cb470d6c6c7ce908870adcdc7dc6","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"541fc6f733b32463cf23277637bb07e2aaa00b53","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"ea01c061d839b520f385f112908de1c6e3391327","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"528052af901d6e6bbfa0e52362a70a58a5dd1e43","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"0e022ee4f8e0dc843ba4c80bb75408a7704279af","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"66cc9dec919dd63d8e4b3d386f7aed3ae684e645","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/edac_device_sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","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/edac/edac_device_sysfs.c"]}],"references":["https://git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c","https://git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6","https://git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b","https://git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53","https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327","https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43","https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af","https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98157.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98157","state":"PUBLISHED","datePublished":"2026-09-25T10:36:27.009Z","dateUpdated":"2026-10-19T09:14:51.107Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.320Z"},"containers":{"cna":{"title":"EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation\n\nThe poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned\nlong, but the target field (poll_msec) is unsigned int. On 64-bit systems,\na value > UINT_MAX is silently truncated when stored.\n\nFix the mismatch by using kstrtouint() instead. This rejects values larger\nthan UINT_MAX at parse time, making truncation impossible. Also add a check\nfor value < 1 to reject the 0-delay case, which would cause the poll work to\nspin without delay and consume 100% CPU."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"a60794ee3f453516ab3ed212ba0295ecf890bc8c","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"f856511058c8cb470d6c6c7ce908870adcdc7dc6","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"541fc6f733b32463cf23277637bb07e2aaa00b53","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"ea01c061d839b520f385f112908de1c6e3391327","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"528052af901d6e6bbfa0e52362a70a58a5dd1e43","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"0e022ee4f8e0dc843ba4c80bb75408a7704279af","versionType":"git"},{"version":"e27e3dac651771fe3250f6305dee277bce29fc5d","status":"affected","lessThan":"66cc9dec919dd63d8e4b3d386f7aed3ae684e645","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/edac_device_sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","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/edac/edac_device_sysfs.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c"},{"url":"https://git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6"},{"url":"https://git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b"},{"url":"https://git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53"},{"url":"https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327"},{"url":"https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43"},{"url":"https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af"},{"url":"https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:14:51.107Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}