CVE-2021-47523

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47523

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47523.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47523

Related

Published

2024-05-24T15:15:14Z

Modified

2024-09-18T03:18:51.991916Z

Summary

[none]

Details

In the Linux kernel, the following vulnerability has been resolved:

IB/hfi1: Fix leak of rcvhdrtaildummykvaddr

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 hfi1allocdevdata() and the deallocation to hfi1freedevdata().

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.92-1

Affected versions

5.*

5.10.46-4

5.10.46-5

5.10.70-1~bpo10+1

5.10.70-1

5.10.84-1

5.10.92-1~bpo10+1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.15-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.15-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}