In the Linux kernel, the following vulnerability has been resolved: fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling A SOFTIRQ-safe to SOFTIRQ-unsafe lock order deadlock can occur in send_sigio() and send_sigurg() when a process group receives a signal. When FASYNC is configured for a process group (PIDTYPE_PGID), both functions use read_lock(&tasklist_lock) to traverse the task list. However, they are frequently called from softirq context: - send_sigio() via input_inject_event -> kill_fasync - send_sigurg() via tcp_check_urg -> sk_send_sigurg (NET_RX_SOFTIRQ) The deadlock is ca...
In the Linux kernel, the following vulnerability has been resolved: fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling A SOFTIRQ-safe to SOFTIRQ-unsafe lock order deadlock can occur in send_sigio() and send_sigurg() when a process group receives a signal. When FASYNC is configured for a process group (PIDTYPE_PGID), both functions use read_lock(&tasklist_lock) to traverse the task list. However, they are frequently called from softirq context: - send_sigio() via input_inject_event -> kill_fasync - send_sigurg() via tcp_check_urg -> sk_send_sigurg (NET_RX_SOFTIRQ) The deadlock is ca...
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 54626335ea4174ab2d9a183b511d825f6765e47b, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 897d6a7247739fb1528f98c575df4f2e5de7f994, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 32dbd5ce4be3a3ed7e00f8af18795cc84fc50a33, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b5fa9e32fb6718f70c986ee14dd5d01b4846f331, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1bee417678f1135e35b25a37734db46aa94258d2, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 20a93e397abe850c49b6fa0e8cc827b5f634a8f5, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bfcc8e8d8a495bb34cae9e620adfb75fb13a3954, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 36c1b57b2ecf3c61ac93f5f07bd29b6f21e226ed, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 00633c4683828acd5256fa8d5163f440d74bbe71, >= 2.6.12, >= 2.6.12.1 < 5.10.259, >= 5.11 < 5.15.210, >= 5.16 < 6.1.176, >= 6.2 < 6.6.143, >= 6.7 < 6.12.94, >= 6.13 < 6.18.36, >= 6.19 < 7.0.13, >= 7.1 < 7.1.1, 2.6.12)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
제3자 참조와 수정 버전 값(5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1.1)은 보조 근거로만 사용하고, 공급사 공식 보안 권고에서 조치 기준을 재확인합니다.
조치 후 확인사항
패치 후 같은 명령으로 전체 버전을 다시 확인해 Linux Linux, linux kernel 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1.1 기준을 충족하는지 확인합니다. 이어서 유형 미확정 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
