Description
An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.
Details
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.4.0-73.82 |
| linux-aws | — | 5.4.0-1048.50 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1048.50~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-fips | — | — |
| linux-aws-hwe | — | 4.15.0-1102.109~16.04.1 |
| linux-azure | — | 5.4.0-1047.49 |
| linux-azure-4.15 | — | 4.15.0-1114.127 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1047.49~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-dell300x | — | 4.15.0-1018.22 |
| linux-fips | — | — |
| linux-gcp | — | 5.4.0-1043.46 |
| linux-gcp-4.15 | — | 4.15.0-1099.112 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1043.46~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.4.0-1043.45 |
| linux-gke-4.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.4.0-1015.16 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.4 | — | 5.4.0-73.82~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-edge | — | — |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-kvm | — | 5.4.0-1039.40 |
| linux-lts-xenial | — | 4.4.0-222.255~14.04.1 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.6 | — | — |
| linux-oracle | — | 5.4.0-1045.49 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1044.47~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.4.0-1035.38 |
| linux-raspi-5.4 | — | 5.4.0-1035.38~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | — |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.8 | — | — |
| linux-snapdragon | — | 4.15.0-1102.111 |
References
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