cve-2021-47528
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-08-04 05:39
Severity
Summary
usb: cdnsp: Fix a NULL pointer dereference in cdnsp_endpoint_init()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37307f7020ab38dde0892a578249bf63d00bca64Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7d94bc8e335cb33918e52efdbe192c36707bfa24Patch
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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                "timestamp": "2024-06-17T17:34:41.402238Z",
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          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdnsp: Fix a NULL pointer dereference in cdnsp_endpoint_init()\n\nIn cdnsp_endpoint_init(), cdnsp_ring_alloc() is assigned to pep-\u003ering\nand there is a dereference of it in cdnsp_endpoint_init(), which could\nlead to a NULL pointer dereference on failure of cdnsp_ring_alloc().\n\nFix this bug by adding a check of pep-\u003ering.\n\nThis bug was found by a static analyzer. The analysis employs\ndifferential checking to identify inconsistent security operations\n(e.g., checks or kfrees) between two code paths and confirms that the\ninconsistent operations are not recovered in the current function or\nthe callers, so they constitute bugs.\n\nNote that, as a bug found by static analysis, it can be a false\npositive or hard to trigger. Multiple researchers have cross-reviewed\nthe bug.\n\nBuilds with CONFIG_USB_CDNSP_GADGET=y show no new warnings,\nand our static analyzer no longer warns about this code."
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    "cveId": "CVE-2021-47528",
    "datePublished": "2024-05-24T15:09:39.357Z",
    "dateReserved": "2024-05-24T15:02:54.825Z",
    "dateUpdated": "2024-08-04T05:39:59.764Z",
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