ghsa-m3hv-89f3-wrrc
Vulnerability from github
Published
2024-09-11 18:31
Modified
2024-09-13 18:31
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
If xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop up the damage. If it fails early enough, before xhci->interrupters is allocated but after xhci->max_interrupters has been set, which happens in most (all?) cases, things get uglier, as xhci_mem_cleanup() unconditionally derefences xhci->interrupters. With prejudice.
Gate the interrupt freeing loop with a check on xhci->interrupters being non-NULL.
Found while debugging a DMA allocation issue that led the XHCI driver on this exact path.
{ "affected": [], "aliases": [ "CVE-2024-45027" ], "database_specific": { "cwe_ids": [ "CWE-459" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-09-11T16:15:07Z", "severity": "MODERATE" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Check for xhci-\u003einterrupters being allocated in xhci_mem_clearup()\n\nIf xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop\nup the damage. If it fails early enough, before xhci-\u003einterrupters\nis allocated but after xhci-\u003emax_interrupters has been set, which\nhappens in most (all?) cases, things get uglier, as xhci_mem_cleanup()\nunconditionally derefences xhci-\u003einterrupters. With prejudice.\n\nGate the interrupt freeing loop with a check on xhci-\u003einterrupters\nbeing non-NULL.\n\nFound while debugging a DMA allocation issue that led the XHCI driver\non this exact path.", "id": "GHSA-m3hv-89f3-wrrc", "modified": "2024-09-13T18:31:42Z", "published": "2024-09-11T18:31:06Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45027" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ] }
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Sightings
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Nomenclature
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