CVE-2021-47312 Affecting kernel-zfcpdump-modules-internal package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (9th percentile)

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  • Snyk ID SNYK-RHEL9-KERNELZFCPDUMPMODULESINTERNAL-7095057
  • published 24 May 2024
  • disclosed 21 May 2024

Introduced: 21 May 2024

New CVE-2021-47312 Open this link in a new tab

How to fix?

There is no fixed version for RHEL:9 kernel-zfcpdump-modules-internal.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-zfcpdump-modules-internal package and not the kernel-zfcpdump-modules-internal package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: Fix dereference of null pointer flow

In the case where chain->flags & NFT_CHAIN_HW_OFFLOAD is false then nft_flow_rule_create is not called and flow is NULL. The subsequent error handling execution via label err_destroy_flow_rule will lead to a null pointer dereference on flow when calling nft_flow_rule_destroy. Since the error path to err_destroy_flow_rule has to cater for null and non-null flows, only call nft_flow_rule_destroy if flow is non-null to fix this issue.

Addresses-Coverity: ("Explicity null dereference")

CVSS Scores

version 3.1
Expand this section

Red Hat

5.5 medium