CVE-2022-3106

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-14 · updated 2026-06-17
Weakness: CWE-476

Description

An issue was discovered in the Linux kernel through 5.16-rc6. ef100_update_stats in drivers/net/ethernet/sfc/ef100_nic.c lacks check of the return value of kmalloc().

Affected products

Linux kernel: before 5.16.0; 5.16.0, 5.16.0-rc1, 5.16.0-rc2, 5.16.0-rc3, 5.16.0-rc4, 5.16.0-rc5 (+1) — fixed in 5.16.0

How to fix

Upgrade to a fixed version: Linux kernel 5.16.0. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2153066
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc2&id=407ecd1bd726f240123f704620d46e285ff30dd9
https://bugzilla.redhat.com/show_bug.cgi?id=2153066
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc2&id=407ecd1bd726f240123f704620d46e285ff30dd9

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