CVE-2026-89473

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89473", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.710Z", "datePublished": "2026-09-11T19:43:31.214Z", "dateUpdated": "2026-10-19T08:47:22.219Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:47:22.219Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25890: Fix power_supply reference leak\n\nbq25890_fw_probe() acquires a reference to a secondary charger using\npower_supply_get_by_name(), but the reference is not released on later\nprobe failures or on driver detach.\n\nIn particular, failures after bq25890_fw_probe() returns successfully,\nsuch as a failure in bq25890_hw_init(), also leak the reference.\n\nRegister a device-managed cleanup action immediately after acquiring\nthe secondary charger. This releases the reference on all subsequent\nprobe failures and on driver detach.\n\nFound by code review."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/power/supply/bq25890_charger.c"], "versions": [{"version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "lessThan": "976c10d883a02968f3f58be0cee499d1fd2ba68a", "status": "affected", "versionType": "git"}, {"version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "lessThan": "81b558afda9321c1a70971a39071d156f3e26950", "status": "affected", "versionType": "git"}, {"version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "lessThan": "238320ad029a3eedabb86286a28cab55bca629b9", "status": "affected", "versionType": "git"}, {"version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "lessThan": "58f1025eca92734eadc063715b98f62538286468", "status": "affected", "versionType": "git"}, {"version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "lessThan": "863c32a83e4235eb0cbf6106f2b124e645302156", "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/power/supply/bq25890_charger.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.3", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a"}, {"url": "https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950"}, {"url": "https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9"}, {"url": "https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468"}, {"url": "https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"}], "title": "power: supply: bq25890: Fix power_supply reference leak", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/power/supply/bq25890_charger.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "976c10d883a02968f3f58be0cee499d1fd2ba68a", "status": "affected", "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "versionType": "git"}, {"lessThan": "81b558afda9321c1a70971a39071d156f3e26950", "status": "affected", "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "versionType": "git"}, {"lessThan": "238320ad029a3eedabb86286a28cab55bca629b9", "status": "affected", "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "versionType": "git"}, {"lessThan": "58f1025eca92734eadc063715b98f62538286468", "status": "affected", "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "versionType": "git"}, {"lessThan": "863c32a83e4235eb0cbf6106f2b124e645302156", "status": "affected", "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/power/supply/bq25890_charger.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.3"}, {"lessThan": "6.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25890: Fix power_supply reference leak\n\nbq25890_fw_probe() acquires a reference to a secondary charger using\npower_supply_get_by_name(), but the reference is not released on later\nprobe failures or on driver detach.\n\nIn particular, failures after bq25890_fw_probe() returns successfully,\nsuch as a failure in bq25890_hw_init(), also leak the reference.\n\nRegister a device-managed cleanup action immediately after acquiring\nthe secondary charger. This releases the reference on all subsequent\nprobe failures and on driver detach.\n\nFound by code review."}], "id": "CVE-2026-89473", "lastModified": "2026-10-19T09:17:40.167", "metrics": {}, "published": "2026-09-11T20:19:28.530", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux Kernel: Denial of service via bq25890 driver reference leak.", "id": "2532246", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532246"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's bq25890 power supply driver. The bq25890_fw_probe() function acquires a reference to a secondary charger but fails to release it on subsequent probe failures or driver detach. This reference leak can lead to resource exhaustion over time, potentially allowing a local attacker to cause a Denial of Service (DoS) by making the system unstable or unresponsive."], "name": "CVE-2026-89473", "public_date": "2026-09-11T19:43:31Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89473\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89473\nhttps://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9\nhttps://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468\nhttps://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950\nhttps://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d54bf877fd878ee45cbc88d399fb98b0b1c4484d,81b558afda9321c1a70971a39071d156f3e26950)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d54bf877fd878ee45cbc88d399fb98b0b1c4484d,238320ad029a3eedabb86286a28cab55bca629b9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d54bf877fd878ee45cbc88d399fb98b0b1c4484d,58f1025eca92734eadc063715b98f62538286468)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d54bf877fd878ee45cbc88d399fb98b0b1c4484d,863c32a83e4235eb0cbf6106f2b124e645302156)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T03:00:10.893640+00:00", "updated": "2026-09-21T01:15:03.758674+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}