Memory Leak Affecting kernel-modules package, versions <0:4.18.0-553.8.1.el8_10


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.13% (34th percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELMODULES-7415026
  • published2 Jul 2024
  • disclosed2 Jul 2024

Introduced: 2 Jul 2024

CVE-2021-47236  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 kernel-modules to version 0:4.18.0-553.8.1.el8_10 or higher.
This issue was patched in ALSA-2024:4211.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules package and not the kernel-modules package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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

net: cdc_eem: fix tx fixup skb leak

when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb.

fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet.

CVSS Base Scores

version 3.1