{"id":"CVE-2026-89462","state":"PUBLISHED","title":"power: supply: max17040: propagate register read errors","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: max17040: propagate register read errors\n\nmax17040_get_vcell() and max17040_get_soc() ignore errors returned by\nregmap_read().  When an I2C transfer fails, the uninitialized register\nvalue is converted and reported to userspace as a valid voltage or state\nof charge.  The polling worker can also replace the cached state of charge\nwith the bogus value and emit a spurious change event.\n\nPropagate read errors through the power supply get_property callback and\nkeep the last valid cached state of charge when polling fails.","publishedAt":"2026-09-11T19:43:23.984Z","updatedAt":"2026-10-30T12:31:45.157Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"abf348c40cd409db72758377f1eb6ed400c981c6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"2943a0edd4865ed744702ada647921c3981207f6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"13fb0477da9b400071b9d518b24d6434c4965263","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"c7aa4c3708cc0d8487336f8281665eaea87130f6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"659cc3d8d5ef246263873fce72c8cadeeed073cc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/max17040_battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.31","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.31","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/power/supply/max17040_battery.c"]}],"references":["https://git.kernel.org/stable/c/abf348c40cd409db72758377f1eb6ed400c981c6","https://git.kernel.org/stable/c/bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed","https://git.kernel.org/stable/c/2943a0edd4865ed744702ada647921c3981207f6","https://git.kernel.org/stable/c/13fb0477da9b400071b9d518b24d6434c4965263","https://git.kernel.org/stable/c/c7aa4c3708cc0d8487336f8281665eaea87130f6","https://git.kernel.org/stable/c/659cc3d8d5ef246263873fce72c8cadeeed073cc"],"weaknesses":[],"ingestedAt":"2026-10-30T12:50:04.827Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89462.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89462","state":"PUBLISHED","datePublished":"2026-09-11T19:43:23.984Z","dateUpdated":"2026-10-30T12:31:45.157Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.708Z"},"containers":{"cna":{"title":"power: supply: max17040: propagate register read errors","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: max17040: propagate register read errors\n\nmax17040_get_vcell() and max17040_get_soc() ignore errors returned by\nregmap_read().  When an I2C transfer fails, the uninitialized register\nvalue is converted and reported to userspace as a valid voltage or state\nof charge.  The polling worker can also replace the cached state of charge\nwith the bogus value and emit a spurious change event.\n\nPropagate read errors through the power supply get_property callback and\nkeep the last valid cached state of charge when polling fails."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"abf348c40cd409db72758377f1eb6ed400c981c6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"2943a0edd4865ed744702ada647921c3981207f6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"13fb0477da9b400071b9d518b24d6434c4965263","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"c7aa4c3708cc0d8487336f8281665eaea87130f6","versionType":"git"},{"version":"c6f4a42de60b981dd210de01cd3e575835e3158e","status":"affected","lessThan":"659cc3d8d5ef246263873fce72c8cadeeed073cc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/max17040_battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.31","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.31","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/power/supply/max17040_battery.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/abf348c40cd409db72758377f1eb6ed400c981c6"},{"url":"https://git.kernel.org/stable/c/bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed"},{"url":"https://git.kernel.org/stable/c/2943a0edd4865ed744702ada647921c3981207f6"},{"url":"https://git.kernel.org/stable/c/13fb0477da9b400071b9d518b24d6434c4965263"},{"url":"https://git.kernel.org/stable/c/c7aa4c3708cc0d8487336f8281665eaea87130f6"},{"url":"https://git.kernel.org/stable/c/659cc3d8d5ef246263873fce72c8cadeeed073cc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:31:45.157Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}