{"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"}}}}