CVE-2025-21703

In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog qdisctreereducebacklog notifies parent qdisc only if child qdisc becomes empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it wou...

CVE-2025-21703 netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()

In the Linux kernel, the following vulnerability has been resolved: netem: Update sch-q.qlen before qdisctreereducebacklog qdisctreereducebacklog notifies parent qdisc only if child qdisc becomes empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it wou...

CVE-2025-21703

Affecting the Linux kernel netem/qdisc path: the issue stems from updating sch->q.qlen before qdisc_tree_reduce_backlog(), causing DRR to miss qlen_notify() and enabling a use-after-free in the active list. CVSS v3.1 indicates high impact (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). The Astra Linux ...

CVE-2025-21700 net: sched: Disallow replacing of child qdisc from one parent to another

In the Linux kernel, the following vulnerability has been resolved: net: sched: Disallow replacing of child qdisc from one parent to another Lion Ackermann was able to create a UAF which can be abused for privilege escalation with the following script Step 1. create root qdisc tc qdisc add dev lo...

CVE-2025-21700 net: sched: Disallow replacing of child qdisc from one parent to another

In the Linux kernel, the following vulnerability has been resolved: net: sched: Disallow replacing of child qdisc from one parent to another Lion Ackermann was able to create a UAF which can be abused for privilege escalation with the following script Step 1. create root qdisc tc qdisc add dev lo...

CVE-2025-21693

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswapcompress and zswapdecompress, the per-CPU acompctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, sin...

CVE-2025-21693

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswapcompress and zswapdecompress, the per-CPU acompctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, sin...

CVE-2025-21693

In the Linux kernel CVE-2025-21693, the zswap path could UAF resources if the original per-CPU acomp_ctx is still in use when a CPU hotplug occurs, because preemption/migration isn’t disabled during the operation. The defect affects mm/zswap: the code retrieves acomp_ctx on the current CPU at ope...

CVE-2025-21693 mm: zswap: properly synchronize freeing resources during CPU hotunplug

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswapcompress and zswapdecompress, the per-CPU acompctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, sin...

CVE-2025-21693 mm: zswap: properly synchronize freeing resources during CPU hotunplug

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswapcompress and zswapdecompress, the per-CPU acompctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, sin...

CVE-2025-21693

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswapcompress and zswapdecompress, the per-CPU acompctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, sin...

Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2024-26983)

The version of hyperv-daemons installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-26983 advisory. - In the Linux kernel, the following vulnerability has been resolved: bootconfig: use memblockfreelate...

Azure Linux 3.0 Security Update: kernel (CVE-2024-36971)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-36971 advisory. - In the Linux kernel, the following vulnerability has been resolved: net: fix dstnegativeadvice race...

Azure Linux 3.0 Security Update: kernel (CVE-2024-44986)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-44986 advisory. - In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6finishoutpu...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6routempathnotify CVE-2024-26852 In the Linux kernel, the following vulnerability has been resolved: ext4: avoid OOB when system.data xattr changes underneath the filesystem...

SUSE-SU-2025:0266-1 Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-1505005549 fixes several issues. The following security issues were fixed: - CVE-2024-41057: cachefiles: fix slab-use-after-free in cachefileswithdrawcookie bsc1229275. - CVE-2024-36971: Fixed dstnegativeadvice race bsc1226324. - CVE-2024-50264:...

SUSE-SU-2025:0238-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3)

This update for the Linux Kernel 5.3.18-15030059161 fixes several issues. The following security issues were fixed: - CVE-2024-36971: Fixed dstnegativeadvice race bsc1226324. - CVE-2024-50264: vsock/virtio: Initialization of the dangling pointer occurring in vsk-trans bsc1233712. - CVE-2022-48956...

CVE-2025-21631

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix wakerbfqq UAF after bfqsplitbfqq Our syzkaller report a following UAF for v6.6: BUG: KASAN: slab-use-after-free in bfqinitrq+0x175d/0x17a0 block/bfq-iosched.c:6958 Read of size 8 at addr ffff8881b57147d8 by task...

Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-1505005549 fixes several issues. The following security issues were fixed: CVE-2024-50264: vsock/virtio: Initialization of the dangling pointer occurring in vsk-trans bsc1233712. CVE-2022-48956: ipv6: avoid use-after-free in ip6fragment bsc1232637...

SUSE SLES15 Security Update : kernel (Live Patch 45 for SLE 15 SP3) (SUSE-SU-2025:0131-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:0131-1 advisory. This update for the Linux Kernel 5.3.18-15030059164 fixes several issues. The following security issues were fixed: - CVE-2024-50264:...