Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: add hook transactions for device deletions Restore the flag that indicates that the hook is going away, ie. NFT_HOOK_REMOVE, but add a new transaction object to track deletion of hooks without altering the basechain/flowtable hook_list during the preparation phase. The existing approach that moves the hook from the basechain/flowtable hook_list to transaction hook_list breaks netlink dump path readers of this RCU-protected list. It should be possible use an array for nft_trans_hook to store the deleted hooks to compact the representation but I am not expecting many hook object, specially now that wildcard support for devices is in place. Note that the nft_trans_chain_hooks() list contains a list of struct nft_trans_hook objects for DELCHAIN and DELFLOWTABLE commands, while this list stores struct nft_hook objects for NEWCHAIN and NEWFLOWTABLE. Note that new commands can be updated to use nft_trans_hook for consistency. This patch also adapts the event notification path to deal with the list of hook transactions.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b6d9014a3335194590abdd2a2471ef5147a67645 before 768daa9f4276be4007e88dea61a378c8582ba008; affected b6d9014a3335194590abdd2a2471ef5147a67645 before 4e69bfb32b2db323d9205fdb30e284481b37817c; affected b6d9014a3335194590abdd2a2471ef5147a67645 before 10f79dbd7719d1da9f5884d13060322d8729f091; affected 7a248f9c74f9f62799718c12efd9e9e391d60b6f; affected f275989ad04159dbfc62cefb65ba9c5ba1d7c34f; affected 62d91062058b42bf70b2c3446aec397bb0ce15ee; affected 99180dec5ae582227219d1fdd0dd5ccf53ec7491; affected 5.10.122 before 5.11; affected 5.15.47 before 5.16; affected 5.17.15 before 5.18; affected 5.18.4 before 5.19 |
| Linux / Linux | affected 5.19; unaffected 0 before 5.19; unaffected 6.18.57 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/768daa9f4276be4007e88dea61a378c8582ba008
- https://git.kernel.org/stable/c/4e69bfb32b2db323d9205fdb30e284481b37817c
- https://git.kernel.org/stable/c/10f79dbd7719d1da9f5884d13060322d8729f091
ADP enrichment
No English description supplied.
No references supplied.