CVE-2026-23278 In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: always walk all pending…
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: always walk all pending catchall elements During transaction processing we might have more than one catchall element: 1 live catchall element and 1 pending element that is coming as part of the new batch. If the map holding the catchall elements is also going away, its required to toggle all catchall elements and not just the first viable candidate. Otherwise, we get: WARNING: ./include/net/netfilter/nf_tables.h:1281 at nft_data_release+0xb7/0xe0 [nf_tables], CPU#2: nft/1404 RIP: 0010:nft_data_release+0xb7/0xe0 [nf_tables] [..] __nft_set_elem_destroy+0x106/0x380 [nf_tables] nf_tables_abort_release+0x348/0x8d0 [nf_tables] nf_tables_abort+0xcf2/0x3ac0 [nf_tables] nfnetlink_rcv_batch+0x9c9/0x20e0 [..]
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 7.0 | earliest → < 7.0 | 7.0 |
| Linux 6.19 | earliest → < 6.19.9 | 6.19.9 |
| Linux 6.18 | earliest → < 6.18.19 | 6.18.19 |
| Linux 6.12 | earliest → < 6.12.78 | 6.12.78 |
| Linux 6.6 | earliest → < 6.6.144 | 6.6.144 |
| Linux | 6.4 | No fix stated |
| Linux 6.1 | earliest → < 6.1.177 | 6.1.177 |
| Linux 5.15 | earliest → < 5.15.224 | 5.15.224 |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published |