Description (CNA)
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")
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 09b1f676e2e0bbff67c568672c565c6f31470157 before 70a5a1950cca02c5cd161bb3846b4d983eed97d3; affected 3c5e44622011b9ea21bd425875dcccfc9a158f5f before 4ca041f919f13783b0b03894783deee00dbca19a |
| Linux / Linux | affected 5.13.2 before 5.13.5 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/70a5a1950cca02c5cd161bb3846b4d983eed97d3
- https://git.kernel.org/stable/c/4ca041f919f13783b0b03894783deee00dbca19a
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.