In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow SET_ID to refer to another table When doing lookups for sets on the same batch by using its ID, a set from a different table can be used. Then, when the table is removed, a reference to the set may be kept after the set is freed, leading to a potential use-after-free. When looking for sets by ID, use the table that was used for the lookup by name, and only return sets belonging to that same table. This fixes CVE-2022-2586, also reported as ZDI-CAN-17470.
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: do not allow SET_ID to refer to another table When doing lookups for sets on the same batch by using its ID, a set from a different table can be used. Then, when the table is removed, a reference to the set may be kept after the set is freed, leading to a potential use-after-free. When looking for sets by ID, use the table that was used for the lookup by name, and only return sets belonging to that same table. This fixes CVE-2022-2586, also reported as ZDI-CAN-17470.
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 958bee14d0718ca7a5002c0f48a099d1d345812a < 77d3b5038b7462318f5183e2ad704b01d57215a2, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < fab2f61cc3b0e441b1749f017cfee75f9bbaded7, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < 1a4b18b1ff11ba26f9a852019d674fde9d1d1cff, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < faafd9286f1355c76fe9ac3021c280297213330e, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6f, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < 0d07039397527361850c554c192e749cfc879ea9, >= 958bee14d0718ca7a5002c0f48a099d1d345812a < 470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2, >= 3.16, >= 3.16 < 4.19.256, >= 4.20 < 5.4.211, >= 5.5 < 5.10.137, >= 5.11 < 5.15.61, >= 5.16 < 5.18.18, >= 5.19 < 5.19.2)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
구조화된 수정 버전 값(4.19.256, 5.4.211, 5.10.137, 5.15.61, 5.18.18, 5.19.2)은 참고용입니다. 공급사 공식 보안 권고에서 제품·에디션·설치 방식별 수정 기준을 확인한 뒤 적용합니다.
조치 후 확인사항
패치 후 같은 명령으로 전체 버전을 다시 확인해 Linux Linux, linux kernel 4.19.256, 5.4.211, 5.10.137, 5.15.61, 5.18.18, 5.19.2 기준을 충족하는지 확인합니다. 이어서 메모리 손상 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
