CVE-2021-47312

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")

The following products are affected by CVE-2021-47312 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47312.

URL	Resource
https://git.kernel.org/stable/c/4ca041f919f13783b0b03894783deee00dbca19a
https://git.kernel.org/stable/c/70a5a1950cca02c5cd161bb3846b4d983eed97d3
https://lore.kernel.org/linux-cve-announce/2024052129-CVE-2021-47312-682b@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47312
https://www.cve.org/CVERecord?id=CVE-2021-47312