{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64213","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.770Z","datePublished":"2026-07-24T15:23:02.987Z","dateUpdated":"2026-07-24T15:23:02.987Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-24T15:23:02.987Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Add lock protection to lm90_alert\n\nSashiko reports:\n\nlm90_alert() executes in the smbus alert context and calls\nlm90_update_confreg() to disable the hardware alert line, without\nacquiring hwmon_lock.\n\nConcurrently, sysfs write operations (such as lm90_write_convrate) hold\nthe hwmon_lock, temporarily modify data->config, and then restore it.\n\nIf an alert interrupt occurs concurrently with a sysfs write, the sysfs\npath will overwrite the alert handler's modifications to data->config\nand the hardware register.\n\nThis unintentionally re-enables the hardware alert line while the alarm is\nstill active, causing an interrupt storm.\n\nAdd the missing lock to lm90_alert() to solve the problem."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/lm90.c"],"versions":[{"version":"7a1d220ccb0cc2b808eb176fb05bf55a38179f3f","lessThan":"bed1fc32e0eb653806fa98afcf55f9a311fc4ce2","status":"affected","versionType":"git"},{"version":"7a1d220ccb0cc2b808eb176fb05bf55a38179f3f","lessThan":"b0b66aae8a94c3663d47e4000b0e81b89ce32186","status":"affected","versionType":"git"},{"version":"7a1d220ccb0cc2b808eb176fb05bf55a38179f3f","lessThan":"873e919e3101063a7a75989510ccfc125a4391cf","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/lm90.c"],"versions":[{"version":"5.3","status":"affected"},{"version":"0","lessThan":"5.3","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/bed1fc32e0eb653806fa98afcf55f9a311fc4ce2"},{"url":"https://git.kernel.org/stable/c/b0b66aae8a94c3663d47e4000b0e81b89ce32186"},{"url":"https://git.kernel.org/stable/c/873e919e3101063a7a75989510ccfc125a4391cf"}],"title":"hwmon: (lm90) Add lock protection to lm90_alert","x_generator":{"engine":"bippy-1.2.0"}}}}