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Уязвимость компонента sched ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: fix bulk flow accounting logic for host fairness In sch_cake, we keep track of the count of active bulk flows per host, when running in dst/src host fairness mode, which is used as the round-robin weight when iterating through flows. The count of active bulk flows is updated whenever a flow changes state. This has a peculiar interaction with the hash collision handling: when a hash collision occurs (after the set-associative hashing), the state of the hash bucket is simply updated to match the new packet that collided, and if host fairness is enabled, that also means assigning new per-host state to the flow. For this reason, the bulk flow counters of the host(s) assigned to the flow are decremented, before new state is assigned (and the counters, which may not belong to the same host anymore, are incremented again). Back when this code was introduced, the host fairness mode was always enabled, so th...

In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: fix bulk flow accounting logic for host fairness In sch_cake, we keep track of the count of active bulk flows per host, when running in dst/src host fairness mode, which is used as the round-robin weight when iterating through flows. The count of active bulk flows is updated whenever a flow changes state. This has a peculiar interaction with the hash collision handling: when a hash collision occurs (after the set-associative hashing), the state of the hash bucket is simply updated to match the new packet that collided, and if host fairness is enabled, that also means assigning new per-host state to the flow. For this reason, the bulk flow counters of the host(s) assigned to the flow are decremented, before new state is assigned (and the counters, which may not belong to the same host anymore, are incremented again). Back when this code was introduced, the host fairness mode was always enabled, so th...

In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: fix bulk flow accounting logic for host fairness In sch_cake, we keep track of the count of active bulk flows per host, when running in dst/src host fairness mode, which is used as the round-robin weight when iterating through flows. The count of active bulk flows is updated whenever a flow changes state. This has a peculiar interaction with the hash collision handling: when a hash collision occurs (after the set-associative hashing), the state of the hash bucket is simply updated to match the new packet that collided, and if host fairness is enabled, that also means assigning new per-host state to the flow. For this reason, the bulk flow counters of the host(s) assigned to the flow are decremented, before new state is assigned (and the counters, which may not belong to the same host anymore, are incremented again). Back when this code was introduced, the host fairness mode was always enabled, so t

In the Linux kernel, the following vulnerability has been resolved: s ...

In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: fix bulk flow accounting logic for host fairness In sch_cake, we keep track of the count of active bulk flows per host, when running in dst/src host fairness mode, which is used as the round-robin weight when iterating through flows. The count of active bulk flows is updated whenever a flow changes state. This has a peculiar interaction with the hash collision handling: when a hash collision occurs (after the set-associative hashing), the state of the hash bucket is simply updated to match the new packet that collided, and if host fairness is enabled, that also means assigning new per-host state to the flow. For this reason, the bulk flow counters of the host(s) assigned to the flow are decremented, before new state is assigned (and the counters, which may not belong to the same host anymore, are incremented again). Back when this code was introduced, the host fairness mode was always enabled, s...

ALT-PU-2020-1145: package `kernel-image-un-def` update to version 5.5.1-alt1

ALT-PU-2020-1251: package `kernel-image-mp` update to version 5.5.4-alt1

Множественные уязвимости kernel-lt

ALT-PU-2023-1434: package `kernel-image-mp` update to version 6.2.4-alt1

ALT-PU-2021-1525: package `kernel-image-un-def` update to version 5.11.7-alt1

ALT-PU-2024-15824: package `kernel-image-rt` update to version 5.10.226-alt1.rt118

ALT-PU-2022-7829: package `kernel-image-un-def` update to version 5.16.0-alt1

ALT-PU-2023-1539: package `kernel-image-un-def` update to version 6.2.8-alt1

ALT-PU-2021-1447: package `kernel-image-mp` update to version 5.11.4-alt1

ALT-PU-2022-1175: package `kernel-image-mp` update to version 5.16.4-alt1

ALT-PU-2024-1867: package `kernel-image-mp` update to version 6.7.4-alt1

ALT-PU-2024-12535: package `kernel-image-std-def` update to version 5.10.226-alt1

ALT-PU-2024-12970: package `kernel-image-std-def` update to version 6.1.111-alt0.p11.1

ALT-PU-2020-1421: package `kernel-image-rpi-un` update to version 5.5.5-alt0.2