Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the reuse of the cgwbreleaseworkfn function after it is released in the mm blk-cgroup. This could lead ...

CVE-2026-31586: Use After Free

In the Linux kernel, the following vulnerability has been resolved: mm: blk-cgroup: fix use-after-free in cgwbreleaseworkfn cgwbreleaseworkfn calls cssputwb-blkcgcss and then later accesses wb-blkcgcss again via blkcgunpinonline. If cssput drops the last reference, the blkcg can be freed...

PT-2026-34938

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the function cgwb release workfn. The function calls css putwb-blkcg css and subsequently accesses wb-blkcg css again via blkcg unpin online. If css put...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013804)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013804 advisory. In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more schedfork races Where commit 4ef0c5c6b5ba kernel/sched: Fix schedfork access ...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010747)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010747 advisory. In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more schedfork races Where commit 4ef0c5c6b5ba kernel/sched: Fix schedfork access ...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-006899)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006899 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix kernel BUG in purgeeffectiveprogs Syzkaller reported a triggered kernel BUG as...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-013182)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013182 advisory. In the Linux kernel, the following vulnerability has been resolved: cgroup: Add missing cpusreadlock to cgroupattachtaskall syzbot is hitting...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011011)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011011 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix kernel BUG in purgeeffectiveprogs Syzkaller reported a triggered kernel BUG as...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011247)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011247 advisory. In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix possible uaf for 'bfqq-bic' Our test report a uaf for 'bfqq-bic' in 5.10:...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007569)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007569 advisory. In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd KASAN reports a use-after-fr...

PT-2026-51885

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists between the pressure write operation and the cgroup file release process. This occurs because the priv member of the struct kernfs open file is not sufficiently...

CLSA-2026-1776099155 systemd: Fix of 2 CVEs

CVE-2026-29111: validate input cgroup path in GetUnitByControlGroup to prevent PID 1 assert/freeze on spurious IPC API calls - CVE-2026-4105: reject invalid class types when registering machines in systemd-machined to prevent privilege escalation...

PT-2026-51970

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read occurs during the copying of elements from a BPF MAP TYPE CGROUP STORAGE map to a per-CPU pcpu map when the value size is not aligned to 8 bytes. The pcpu init valu...

PT-2026-43672

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the cgroup storage get next key function within the bpf subsystem. The list next entry function does not return NULL; instead, when the current element is the last...

PT-2026-52020

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A disk reference leak occurs in the blkcg maybe throttle current function. When blkcg lookup, blkg lookup, or blkg tryget fails, the function fails to call put disk on the error path. Th...

The vulnerability of the blkcg_css_online() function in the block/blk-cgroup.c module, which supports the block-level kernel in the Linux operating system, allows a hacker to trigger a service failure.

The vulnerability of the blkcgcssonline function in the block/blk-cgroup.c module, which supports the block-level kernel in Linux, is related to improper initialization. Exploiting this vulnerability could allow an attacker to cause service failures...

The vulnerability of the blkcg_init_disk() function in the block/blk-cgroup.c module, which supports the Linux kernel’s block-level support, allows a attacker to cause a service failure.

The vulnerability of the blkcginitdisk function in the block/blk-cgroup.c module, which supports the Linux kernel’s block-level support, involves the failure to release resources after their useful life has expired. Exploiting this vulnerability could allow an attacker to cause service failures...

bpf: Fix a UAF issue in bpf_trampoline_link_cgroup_shim

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SUSE CVE-2026-23319

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a UAF issue in bpftrampolinelinkcgroupshim The root cause of this bug is that when 'bpflinkput' reduces the refcount of 'shimlink-link.link' to zero, the resource is considered released but may still be referenced via...

CVE-2026-23319

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF component. This use-after-free UAF vulnerability allows a local user to trigger a condition in the bpftrampolinelinkcgroupshim function where a resource is freed but still referenced. This can lead to a system crash, resulting in a...