{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-35986", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.145Z", "datePublished": "2024-05-20T09:47:53.074Z", "dateUpdated": "2026-08-05T11:31:23.957Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:31:23.957Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: ti: tusb1210: Resolve charger-det crash if charger psy is unregistered\n\nThe power_supply frame-work is not really designed for there to be\nlong living in kernel references to power_supply devices.\n\nSpecifically unregistering a power_supply while some other code has\na reference to it triggers a WARN in power_supply_unregister():\n\n\tWARN_ON(atomic_dec_return(&psy->use_cnt));\n\nFolllowed by the power_supply still getting removed and the\nbacking data freed anyway, leaving the tusb1210 charger-detect code\nwith a dangling reference, resulting in a crash the next time\ntusb1210_get_online() is called.\n\nFix this by only holding the reference in tusb1210_get_online()\nfreeing it at the end of the function. Note this still leaves\na theoretical race window, but it avoids the issue when manually\nrmmod-ing the charger chip driver during development." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The dangling `power_supply` is dereferenced through a local sysfs read of the world-readable `/sys/class/power_supply/tusb1211-charger-detect/online` attribute, or by the driver's own workqueue; there is no network or remote-peer input involved.\nAC:H - The stale reference only becomes dangerous after the bq24190 charger psy is unregistered, which requires a driver unbind (0200 sysfs) or module removal (CAP_SYS_MODULE, unreachable via user namespaces) — a system state the unprivileged attacker cannot induce and must wait for.\nPR:L - Once the charger driver has been detached, any unprivileged local user can trigger the use-after-free by reading the 0444 `online` sysfs attribute exported by the tusb1211-charger-detect power supply.\nUI:N - No victim action is needed for the trigger itself — the attacker's own sysfs read reaches the freed object, and `tusb1210_chg_det_work` hits it autonomously on the next USB charger event.\nS:U - The dangling dereference and its consequences stay within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Use-after-free of the `bq24190_dev_info` object (and of the module-resident `power_supply_desc` after rmmod) lets an attacker who reclaims the freed slab/module memory steer reads through attacker-controlled pointers, with a value derived from freed memory returned to userspace via the `online` property.\nI:H - The freed object supplies the `desc->get_property` function pointer and the `bdi->dev`/`bdi->regmap` pointers used for subsequent writes, so heap spraying over the freed allocation yields control-flow hijack and write primitives.\nA:H - The unfixed path reliably oopses — the commit describes a crash on the next `tusb1210_get_online()` call, preceded by a `WARN_ON` in `power_supply_unregister()`." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/phy/ti/phy-tusb1210.c" ], "versions": [ { "version": "48969a5623ed918713552e2b4f9d391c89b5e838", "lessThan": "25b3498485ac281e5851700e33b97f12c9533fd8", "status": "affected", "versionType": "git" }, { "version": "48969a5623ed918713552e2b4f9d391c89b5e838", "lessThan": "73224a5d2180066c7fe05b4656647601ba08d588", "status": "affected", "versionType": "git" }, { "version": "48969a5623ed918713552e2b4f9d391c89b5e838", "lessThan": "9827caa5105fb16d1fae2e75c8d0e4662014b3ca", "status": "affected", "versionType": "git" }, { "version": "48969a5623ed918713552e2b4f9d391c89b5e838", "lessThan": "bf6e4ee5c43690e4c5a8a057bbcd4ff986bed052", "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/phy/ti/phy-tusb1210.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.90", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.30", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.9", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "5.18", "versionEndExcluding": "6.1.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.30" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.8.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/25b3498485ac281e5851700e33b97f12c9533fd8" }, { "url": "https://git.kernel.org/stable/c/73224a5d2180066c7fe05b4656647601ba08d588" }, { "url": "https://git.kernel.org/stable/c/9827caa5105fb16d1fae2e75c8d0e4662014b3ca" }, { "url": "https://git.kernel.org/stable/c/bf6e4ee5c43690e4c5a8a057bbcd4ff986bed052" } ], "title": "phy: ti: tusb1210: Resolve charger-det crash if charger psy is unregistered", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-29T18:11:49.424190Z", "id": "CVE-2024-35986", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-29T20:00:28.396Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:30:11.621Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/25b3498485ac281e5851700e33b97f12c9533fd8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/73224a5d2180066c7fe05b4656647601ba08d588", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9827caa5105fb16d1fae2e75c8d0e4662014b3ca", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/bf6e4ee5c43690e4c5a8a057bbcd4ff986bed052", "tags": [ "x_transferred" ] } ] } ] } }