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Resource Leak The advisory has been revoked - it doesn't affect any version of package kernel-rt-modules-extra  (opens in a new tab)

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EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTMODULESEXTRA-6281469
  • published27 Feb 2024
  • disclosed26 Feb 2024
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Introduced: 26 Feb 2024

CVE-2021-46906  (opens in a new tab)
CWE-402  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules-extra package and not the kernel-rt-modules-extra package as distributed by RHEL.

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

HID: usbhid: fix info leak in hid_submit_ctrl

In hid_submit_ctrl(), the way of calculating the report length doesn't take into account that report->size can be zero. When running the syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to calculate transfer_buffer_length as 16384. When this urb is passed to the usb core layer, KMSAN reports an info leak of 16384 bytes.

To fix this, first modify hid_report_len() to account for the zero report size case by using DIV_ROUND_UP for the division. Then, call it from hid_submit_ctrl().