CVE-2022-50212
published 2025-06-18CVE-2022-50212: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing lookups…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.19%
9.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
When doing lookups for chains on the same batch by using its ID, a chain
from a different table can be used. If a rule is added to a table but
refers to a chain in a different table, it will be linked to the chain in
table2, but would have expressions referring to objects in table1.
Then, when table1 is removed, the rule will not be removed as its linked to
a chain in table2. When expressions in the rule are processed or removed,
that will lead to a use-after-free.
When looking for chains by ID, use the table that was used for the lookup
by name, and only return chains belonging to that same table.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.2-1 (bookworm) | linux 6.0.2-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 837830a4b439bfeb86c70b0115c280377c84714b < 9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583 | 9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583 |
| linux | linux | >= 837830a4b439bfeb86c70b0115c280377c84714b < 91501513016903077f91033fa5d2aa26cac399b2 | 91501513016903077f91033fa5d2aa26cac399b2 |
| linux | linux | >= 837830a4b439bfeb86c70b0115c280377c84714b < 0f49613a213d918af790c1276f79da741968de11 | 0f49613a213d918af790c1276f79da741968de11 |
| linux | linux | >= 837830a4b439bfeb86c70b0115c280377c84714b < 58e863f64ee3d0879297e5e53b646e4b91e59620 | 58e863f64ee3d0879297e5e53b646e4b91e59620 |
| linux | linux | >= 837830a4b439bfeb86c70b0115c280377c84714b < 95f466d22364a33d183509629d0879885b4f547e | 95f466d22364a33d183509629d0879885b4f547e |
| linux | linux_kernel | >= 0 < 5.10.140-1 | 5.10.140-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 5.11 < 5.15.61 | 5.15.61 |
| linux | linux_kernel | >= 5.16 < 5.18.18 | 5.18.18 |
| linux | linux_kernel | >= 5.19 < 5.19.2 | 5.19.2 |
| linux | linux_kernel | >= 5.9 < 5.10.137 | 5.10.137 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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OSV
CVE-2022-50212: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing l
osv·2025-06-18·CVSS 7.8
CVE-2022-50212 [HIGH] CVE-2022-50212: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing l
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing lookups for chains on the same batch by using its ID, a chain from a different table can be used. If a rule is added to a table but refers to a chain in a different table, it will be linked to the chain in table2, but would have expressions referring to objects in table1. Then, when table1 is removed, the rule will not be removed as its linked to a chain in table2. When expressions in the rule are processed or removed, that will lead to a use-after-free. When looking for chains by ID, use the table that was used for the lookup by name, and only return chains belonging to that same table.
GHSA
GHSA-6qc3-mmcj-4p92: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
When doing
ghsa_unreviewed·2025-06-18
CVE-2022-50212 [HIGH] CWE-416 GHSA-6qc3-mmcj-4p92: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
When doing
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
When doing lookups for chains on the same batch by using its ID, a chain
from a different table can be used. If a rule is added to a table but
refers to a chain in a different table, it will be linked to the chain in
table2, but would have expressions referring to objects in table1.
Then, when table1 is removed, the rule will not be removed as its linked to
a chain in table2. When expressions in the rule are processed or removed,
that will lead to a use-after-free.
When looking for chains by ID, use the table that was used for the lookup
by name, and only return chains belonging to that same table.
Red Hat
kernel: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
vendor_redhat·2025-06-18·CVSS 7.8
CVE-2022-50212 [HIGH] kernel: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
kernel: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
When doing lookups for chains on the same batch by using its ID, a chain
from a different table can be used. If a rule is added to a table but
refers to a chain in a different table, it will be linked to the chain in
table2, but would have expressions referring to objects in table1.
Then, when table1 is removed, the rule will not be removed as its linked to
a chain in table2. When expressions in the rule are processed or removed,
that will lead to a use-after-free.
When looking for chains by ID, use the table that was used for the lookup
by name, and only return chains belongi
Debian
CVE-2022-50212: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
vendor_debian·2022·CVSS 7.8
CVE-2022-50212 [HIGH] CVE-2022-50212: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table When doing lookups for chains on the same batch by using its ID, a chain from a different table can be used. If a rule is added to a table but refers to a chain in a different table, it will be linked to the chain in table2, but would have expressions referring to objects in table1. Then, when table1 is removed, the rule will not be removed as its linked to a chain in table2. When expressions in the rule are processed or removed, that will lead to a use-after-free. When looking for chains by ID, use the table that was used for the lookup by name, and only return chains belonging to that same table.
Scope: local
bookworm: resolved (fixed in 6.0.2-1)
bulls
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0f49613a213d918af790c1276f79da741968de11https://git.kernel.org/stable/c/58e863f64ee3d0879297e5e53b646e4b91e59620https://git.kernel.org/stable/c/91501513016903077f91033fa5d2aa26cac399b2https://git.kernel.org/stable/c/95f466d22364a33d183509629d0879885b4f547ehttps://git.kernel.org/stable/c/9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583
2025-06-18
Published