cve-2021-47523
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-12-19 07:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix leak of rcvhdrtail_dummy_kvaddr This buffer is currently allocated in hfi1_init(): if (reinit) ret = init_after_reset(dd); else ret = loadtime_init(dd); if (ret) goto done; /* allocate dummy tail memory for all receive contexts */ dd->rcvhdrtail_dummy_kvaddr = dma_alloc_coherent(&dd->pcidev->dev, sizeof(u64), &dd->rcvhdrtail_dummy_dma, GFP_KERNEL); if (!dd->rcvhdrtail_dummy_kvaddr) { dd_dev_err(dd, "cannot allocate dummy tail memory\n"); ret = -ENOMEM; goto done; } The reinit triggered path will overwrite the old allocation and leak it. Fix by moving the allocation to hfi1_alloc_devdata() and the deallocation to hfi1_free_devdata().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b
Impacted products
Vendor Product Version
Linux Linux Version: 46b010d3eeb8eb29c740c4ef09c666485f5c07e6
Version: 46b010d3eeb8eb29c740c4ef09c666485f5c07e6
Version: 46b010d3eeb8eb29c740c4ef09c666485f5c07e6
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   Linux Linux Version: 4.5
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{
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            metrics: [
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                        id: "CVE-2021-47523",
                        options: [
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      cna: {
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               product: "Linux",
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      datePublished: "2024-05-24T15:09:36.045Z",
      dateReserved: "2024-05-24T15:02:54.825Z",
      dateUpdated: "2024-12-19T07:44:07.748Z",
      state: "PUBLISHED",
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}


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