VULNERABILITY INTELLIGENCE

CVE-2021-47301

CVSS score7.8 HIGH
EPSS probability0.24%
CISA KEVNot currently listed
Published2024-05-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)

Weakness classification

  • nvd@nist.gov: CWE-416

Primary references