CVSS 7.8 · High EPSS 0,32%
Kerentanan Out-of-bounds Write pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: prefer nft_chain_validate nft_chain_validate already performs loop detection because a cycle will result in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE). It also follows maps via ->validate callback in nft_lookup, so there appears no reason to iterate the maps again. nf_tables_check_loops() and all its helper functions can be removed. This improves ruleset load time significantly, from 23s down to 12s. This also fixes a crash bug. Old loop detection code can result in unbounded recursion: BUG: TASK stack guard page was hit at .... Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN CPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1 [..] with a suitable ruleset during validation of register stores. I can't see any actual reason to attempt to check for this from nft_validate_register_store(), at this point the transaction is still in progress, so we don't have a full picture of the rule graph. For nf-next it might make sense to either remove it or make this depend on table->validate_state in case we could catch an error earlier (for improved error reporting to userspace).
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 3.13 hingga sebelum 4.19.320 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.282 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.224 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.165 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.105 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.46 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.9.10 |
| linux | linux kernel | Versi 6.10 rc1 |
| linux | linux kernel | Versi 6.10 rc2 |
| linux | linux kernel | Versi 6.10 rc3 |
| linux | linux kernel | Versi 6.10 rc4 |
| linux | linux kernel | Versi 6.10 rc5 |
| linux | linux kernel | Versi 6.10 rc6 |
| linux | linux kernel | Versi 6.10 rc7 |