{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54083", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T13:02:52.515Z", "datePublished": "2025-12-24T13:06:14.771Z", "dateUpdated": "2026-08-05T09:17:04.479Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:17:04.479Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: tegra: xusb: Clear the driver reference in usb-phy dev\n\nFor the dual-role port, it will assign the phy dev to usb-phy dev and\nuse the port dev driver as the dev driver of usb-phy.\n\nWhen we try to destroy the port dev, it will destroy its dev driver\nas well. But we did not remove the reference from usb-phy dev. This\nmight cause the use-after-free issue in KASAN." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerability is reached through the tegra-xusb-padctl platform driver teardown/probe-failure path, which is driven from local system interfaces (sysfs unbind, module unload) and local process activity, not from any network or peer-supplied data. No physical device insertion is needed since the padctl is an on-SoC platform device.\nAC:L - The dangling `dev.driver` and its subsequent dereference occur deterministically in the same teardown sequence — `devres_release_all()` frees the fake `device_driver` in `device_del(&port->dev)` and `phy_destroy()` reads it moments later — with no race the attacker cannot influence. The freed object is a small kmalloc allocation that a local attacker can reliably groom.\nPR:L - Exploitation of the freed `struct device_driver` — spraying the slab so the driver core reads attacker-controlled `pm`/`name` fields — is performed by an ordinary unprivileged local process, and the same teardown also executes on the boot-time probe-failure path with no privilege at all. Consistent with prior scoring of driver-remove-path use-after-frees in this subsystem class, PR:L is the higher defensible value.\nUI:N - No victim action is required; the use-after-free occurs automatically within the driver removal/probe-failure sequence. The attacker only needs to have its heap spray in place.\nS:U - Both the freed object and the code dereferencing it live in the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary. This is a standard in-kernel memory-safety defect.\nC:H - The stale pointer is read by `dev_driver_string()` (`drv->name` passed to printk) and by `device_pm_check_callbacks()`, so reallocated heap contents can be dereferenced and leaked into kernel logs. Per use-after-free guidance, control over the freed object's contents yields an arbitrary-read primitive.\nI:H - `__rpm_get_callback()` loads a function pointer out of `dev->driver->pm` on the freed object and invokes it, giving a direct control-flow hijack primitive once the slab object is reallocated with attacker-controlled data. Use-after-free of a structure containing function pointers is treated as High integrity impact.\nA:H - The KASAN-reported use-after-free dereferences freed memory during device removal, producing an oops or panic even without deliberate exploitation. Any kernel crash is scored High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/phy/tegra/xusb.c" ], "versions": [ { "version": "e8f7d2f409a15c519d5a6085777d85c1c4bab73a", "lessThan": "b6a107c52073496d2e5d2837915f59fb3103832f", "status": "affected", "versionType": "git" }, { "version": "e8f7d2f409a15c519d5a6085777d85c1c4bab73a", "lessThan": "b84998a407a882991916b1a61d987c400d8a0ce6", "status": "affected", "versionType": "git" }, { "version": "e8f7d2f409a15c519d5a6085777d85c1c4bab73a", "lessThan": "238edc04ddb9d272b38f5419bcd419ad3b92b91b", "status": "affected", "versionType": "git" }, { "version": "e8f7d2f409a15c519d5a6085777d85c1c4bab73a", "lessThan": "82187460347ad58fd6b06d2883da73c3f2df9631", "status": "affected", "versionType": "git" }, { "version": "e8f7d2f409a15c519d5a6085777d85c1c4bab73a", "lessThan": "c0c2fcb1325d0d4f3b322b5ee49385f8eca2560d", "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/tegra/xusb.c" ], "versions": [ { "version": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.188", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.39", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.4", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "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": "5.7", "versionEndExcluding": "5.10.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.4.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b6a107c52073496d2e5d2837915f59fb3103832f" }, { "url": "https://git.kernel.org/stable/c/b84998a407a882991916b1a61d987c400d8a0ce6" }, { "url": "https://git.kernel.org/stable/c/238edc04ddb9d272b38f5419bcd419ad3b92b91b" }, { "url": "https://git.kernel.org/stable/c/82187460347ad58fd6b06d2883da73c3f2df9631" }, { "url": "https://git.kernel.org/stable/c/c0c2fcb1325d0d4f3b322b5ee49385f8eca2560d" } ], "title": "phy: tegra: xusb: Clear the driver reference in usb-phy dev", "x_generator": { "engine": "bippy-1.2.0" } } } }