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CVE-2021-47301 Details

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)

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/7b292608db23ccbbfbfa50cdb155d01725d7a52e	kernel.org	Patch
https://git.kernel.org/stable/c/88e0720133d42d34851c8721cf5f289a50a8710f	kernel.org	Patch
https://git.kernel.org/stable/c/8e24c12f2ff6d32fd9f057382f08e748ec97194c	kernel.org	Patch
https://git.kernel.org/stable/c/d3ccb18ed5ac3283c7b31ecc685b499e580d5492	kernel.org	Patch
https://git.kernel.org/stable/c/d7367f781e5a9ca5df9082b15b272b55e76931f8	kernel.org	Patch
https://git.kernel.org/stable/c/f153664d8e70c11d0371341613651e1130e20240	kernel.org	Patch
https://git.kernel.org/stable/c/7b292608db23ccbbfbfa50cdb155d01725d7a52e	CVE	Patch
https://git.kernel.org/stable/c/88e0720133d42d34851c8721cf5f289a50a8710f	CVE	Patch
https://git.kernel.org/stable/c/8e24c12f2ff6d32fd9f057382f08e748ec97194c	CVE	Patch
https://git.kernel.org/stable/c/d3ccb18ed5ac3283c7b31ecc685b499e580d5492	CVE	Patch
https://git.kernel.org/stable/c/d7367f781e5a9ca5df9082b15b272b55e76931f8	CVE	Patch
https://git.kernel.org/stable/c/f153664d8e70c11d0371341613651e1130e20240	CVE	Patch

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 4.12, < 4.14.241 >= 4.15, < 4.19.199 >= 4.20, < 5.4.136 >= 5.5, < 5.10.54 >= 5.11, < 5.13.6
CPE cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.14:rc1:::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	kernel.org
Jun 17, 2026	CVE Modified	CISA-ADP
Dec 26, 2024	Initial Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 28, 2024	CVE Modified	kernel.org
May 21, 2024	New CVE Received	kernel.org