What’s Vulnerable › Vulnerabilities

CVE-2022-50252: igb: Do not free q_vector unless new one was allocated

• Severity: high (CVSS 7.8 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: 2025-09-15 · updated 2026-10-15
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: igb: Do not free q_vector unless new one was allocated Avoid potential use-after-free condition under memory pressure. If the kzalloc() fails, q_vector will be freed but left in the original adapter->q_vector[v_idx] array position.

Affected products

• Linux kernel: before 4.9.337; from 4.10 before 4.14.303; from 4.15 before 4.19.270; from 4.20 before 5.4.229; from 5.5 before 5.10.163; from 5.11 before 5.15.86 — fixed in 4.14.303, 4.19.270, 4.9.337, 5.10.163, 5.15.86, 5.4.229

How to fix

Upgrade to a fixed version: Linux kernel 4.14.303, 4.19.270, 4.9.337, 5.10.163. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0200f0fbb11e359cc35af72ab10b2ec224e6f633
• https://git.kernel.org/stable/c/0668716506ca66f90d395f36ccdaebc3e0e84801
• https://git.kernel.org/stable/c/314f7092b27749bdde44c14095b5533afa2a3bc8
• https://git.kernel.org/stable/c/3cb18dea11196fb4a06f78294cec5e61985e1aff
• https://git.kernel.org/stable/c/56483aecf6b22eb7dff6315b3a174688c6ad494c
• https://git.kernel.org/stable/c/64ca1969599857143e91aeec4440640656100803
• https://git.kernel.org/stable/c/68e8adbcaf7a8743e473343b38b9dad66e2ac6f3
• https://git.kernel.org/stable/c/6e399577bd397a517df4b938601108c63769ce0a
• https://git.kernel.org/stable/c/f96bd8adc8adde25390965a8c1ee81b73cb62075

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