CVE-2024-35900
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject new basechain after table flag update When dormant flag is toggled, hooks are disabled in the commit phase by iterating over current chains in table…
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject new basechain after table flag update When dormant flag is toggled, hooks are disabled in the commit phase by iterating over current chains in table (existing and new). The following configuration allows for an inconsistent state: add table x add chain x y { type filter hook input priority 0; } add table x { flags dormant; } add chain x w { type filter hook input priority 1; } which triggers the following warning when trying to unregister chain w which is already unregistered. [ 127.322252] WARNING: CPU: 7 PID: 1211 at net/netfilter/core.c:50 1 __nf_unregister_net_hook+0x21a/0x260 [...] [ 127.322519] Call Trace: [ 127.322521] <TASK> [ 127.322524] ? __warn+0x9f/0x1a0 [ 127.322531] ? __nf_unregister_net_hook+0x21a/0x260 [ 127.322537] ? report_bug+0x1b1/0x1e0 [ 127.322545] ? handle_bug+0x3c/0x70 [ 127.322552] ? exc_invalid_op+0x17/0x40 [ 127.322556] ? asm_exc_invalid_op+0x1a/0x20 [ 127.322563] ? kasan_save_free_info+0x3b/0x60 [ 127.322570] ? __nf_unregister_net_hook+0x6a/0x260 [ 127.322577] ? __nf_unregister_net_hook+0x21a/0x260 [ 127.322583] ? __nf_unregister_net_hook+0x6a/0x260 [ 127.322590] ? __nf_tables_unregister_hook+0x8a/0xe0 [nf_tables] [ 127.322655] nft_table_disable+0x75/0xf0 [nf_tables] [ 127.322717] nf_tables_commit+0x2571/0x2620 [nf_tables]
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/41bad13c0e8a5a2b47a7472cced922555372daabPatch
- https://git.kernel.org/stable/c/420132bee3d0136b7fba253a597b098fe15493a7Patch
- https://git.kernel.org/stable/c/6d12f21f8bbe23fde25b77c2bf5973c136b8bef8Patch
- https://git.kernel.org/stable/c/745cf6a843896cdac8766c74379300ed73c78830Patch
- https://git.kernel.org/stable/c/7b6fba6918714afee3e17796113ccab636255c7bPatch
- https://git.kernel.org/stable/c/8ba81dca416adf82fc5a2a23abc1a8cc02ad32fbPatch
- https://git.kernel.org/stable/c/994209ddf4f430946f6247616b2e33d179243769Patch
- https://git.kernel.org/stable/c/e95bb4cba94c018be24b11f017d1c55dd6cda31aPatch
- https://git.kernel.org/stable/c/41bad13c0e8a5a2b47a7472cced922555372daabPatch
- https://git.kernel.org/stable/c/420132bee3d0136b7fba253a597b098fe15493a7Patch
- https://git.kernel.org/stable/c/6d12f21f8bbe23fde25b77c2bf5973c136b8bef8Patch
- https://git.kernel.org/stable/c/745cf6a843896cdac8766c74379300ed73c78830Patch
- https://git.kernel.org/stable/c/7b6fba6918714afee3e17796113ccab636255c7bPatch
- https://git.kernel.org/stable/c/8ba81dca416adf82fc5a2a23abc1a8cc02ad32fbPatch
- https://git.kernel.org/stable/c/994209ddf4f430946f6247616b2e33d179243769Patch
- https://git.kernel.org/stable/c/e95bb4cba94c018be24b11f017d1c55dd6cda31aPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.