CVE-2024-27020
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/01f1a678b05ade4b1248019c2dcca773aebbeb7fPatch
- https://git.kernel.org/stable/c/0b6de00206adbbfc6373b3ae38d2a6f197987907Patch
- https://git.kernel.org/stable/c/8d56bad42ac4c43c6c72ddd6a654a2628bf839c5Patch
- https://git.kernel.org/stable/c/934e66e231cff2b18faa2c8aad0b8cec13957e05Patch
- https://git.kernel.org/stable/c/939109c0a8e2a006a6cc8209e262d25065f4403aPatch
- https://git.kernel.org/stable/c/a9ebf340d123ae12582210407f879d6a5a1bc25bPatch
- https://git.kernel.org/stable/c/b38a133d37fa421c8447b383d788c9cc6f5cb34cPatch
- https://git.kernel.org/stable/c/f969eb84ce482331a991079ab7a5c4dc3b7f89bfPatch
- https://git.kernel.org/stable/c/01f1a678b05ade4b1248019c2dcca773aebbeb7fPatch
- https://git.kernel.org/stable/c/0b6de00206adbbfc6373b3ae38d2a6f197987907Patch
- https://git.kernel.org/stable/c/8d56bad42ac4c43c6c72ddd6a654a2628bf839c5Patch
- https://git.kernel.org/stable/c/934e66e231cff2b18faa2c8aad0b8cec13957e05Patch
- https://git.kernel.org/stable/c/939109c0a8e2a006a6cc8209e262d25065f4403aPatch
- https://git.kernel.org/stable/c/a9ebf340d123ae12582210407f879d6a5a1bc25bPatch
- https://git.kernel.org/stable/c/b38a133d37fa421c8447b383d788c9cc6f5cb34cPatch
- https://git.kernel.org/stable/c/f969eb84ce482331a991079ab7a5c4dc3b7f89bfPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.