In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all (or, presumably, all of the firmware files failed to parse), we end up unbinding by calling device_release_driver(), which calls remove(), which then in iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However the new code I added will still erroneously access it after it was freed. Set 'failure=false' in this case to avoid the access, all data was already freed anyway.
In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all (or, presumably, all of the firmware files failed to parse), we end up unbinding by calling device_release_driver(), which calls remove(), which then in iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However the new code I added will still erroneously access it after it was freed. Set 'failure=false' in this case to avoid the access, all data was already freed anyway.
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 8e10749fa1a454c1e7214f36cec83241f5a36ef1 < d3b98fe36f8a06ce654049540773256ab59cb53d, >= 1d7cc54137a4f28506dc7beac235b240b08f4e59 < 7d6475179b85a83186ccce59cdc359d4f07d0bcb, >= 0446cafa843e6db4982731c167e11c80d42be7e2 < 494de920d98f125b099f27a2d274850750aff957, >= febab6b60d61d13cd9f30a2991deea56df39567d < 008508c16af0087cda0394e1ac6f0493b01b6063, >= e23f075d77987de4215c8e0696f28bcc707506f7 < ddd46059f7d99119b62d44c519df7a79f2e6a515, >= 6b5ad4bd0d78fef6bbe0ecdf96e09237c9c52cc1 < 9958b9cbb22145295ee1ffaea0904c383da2c05d, >= ab07506b0454bea606095951e19e72c282bfbb42 < bea2662e7818e15d7607d17d57912ac984275d94, >= 4.14.263 < 4.14.268, >= 4.19.226 < 4.19.231, >= 5.4.174 < 5.4.181, >= 5.10.94 < 5.10.102, >= 5.15.17 < 5.15.25, >= 5.16.3 < 5.16.11)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
구조화된 수정 버전 값(4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11)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 4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11 기준을 충족하는지 확인합니다. 이어서 메모리 손상 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
