PT-2024-10331 · Linux+2 · Linux Kernel+2

Govindarajulu Varadarajan + 1 · Published 2024-02-28 · Updated 2024-12-06 · CVE-2021-46998

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a use after free bug in the enic hard start xmit function. This function calls enic queue wq skb(), which may free the skb if an error occurs. However, the freed skb is still used in skb tx timestamp(skb), potentially leading to a denial of service. The solution involves making enic queue wq skb() return an error and goto spin unlock() in case of an error.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-00810

CVE-2021-46998

OESA-2024-1345

OESA-2024-1346

OPENSUSE-SU-2024_1489-1

SUSE-SU-2024:1454-1

SUSE-SU-2024:1465-1

SUSE-SU-2024:1489-1

SUSE-SU-2024:1643-1

SUSE-SU-2024:1646-1

SUSE-SU-2024:1870-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 634

• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46998 · Vendor Advisory
• https://git.kernel.org/stable/c/6892396ebf04ea2c021d80e10f4075e014cd7cc3 · Patch
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52458 · Security Note
• https://git.kernel.org/stable/c/7afdd6aba95c8a526038e7abe283eeac3e4320f1 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-46955 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47049 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47013 · Security Note
• https://git.kernel.org/stable/c/f7f6f07774091a6ddd98500b85386c3c6afb30d3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47024 · Security Note
• https://bdu.fstec.ru/vul/2025-00810 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1646-1 · Vendor Advisory
• https://git.kernel.org/stable/c/25a87b1f566b5eb2af2857a928f0e2310d900976 · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-46998 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-46998 · Vendor Advisory