Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fixed potential memory corruption in childcfsrqonlist. childcfsrqonlist attempts to convert a ‘prev’ pointer to a cfsrq. This ‘prev’ pointer can originate from the struct rqs’s leafcfsrqlist, making the conversion...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000353)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000353 advisory. In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfsrq's, which allows attackers to cause a denial of service infinite loop in...

kernel: sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

CVE-2025-21919 sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in childcfsrqonlist childcfsrqonlist attempts to convert a 'prev' pointer to a cfsrq. This 'prev' pointer can originate from struct rq's leafcfsrqlist, making the conversion invalid and...

CVE-2021-47209

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups from regaining cfsrq's Kevin is reporting crashes which point to a use-after-free of a cfsrq in updateblockedaverages. Initial debugging revealed that we've live cfsrq's onlist=1 in an about t...

CVE-2021-47209

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups from regaining cfsrq's Kevin is reporting crashes which point to a use-after-free of a cfsrq in updateblockedaverages. Initial debugging revealed that we've live cfsrq's onlist=1 in an about t...

CVE-2021-47209

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups from regaining cfsrq's Kevin is reporting crashes which point to a use-after-free of a cfsrq in updateblockedaverages. Initial debugging revealed that we've live cfsrq's onlist=1 in an about t...

CVE-2021-47209: Use After Free

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups from regaining cfsrq's Kevin is reporting crashes which point to a use-after-free of a cfsrq in updateblockedaverages. Initial debugging revealed that we've live cfsrq's onlist=1 in an about t...

CVE-2018-20784

In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfsrq's, which allows attackers to cause a denial of service infinite loop in updateblockedaverages or possibly have unspecified other impact by inducing a high load...