CVE-2026-22987

CVE-2026-22987 concerns the Linux kernel net/sched subsystem. The issue arises when tcf_idrinfo_destroy() can pass an ERR_PTR(-EBUSY) as a tc_action pointer during netns teardown, leading to a dereference of an error pointer in tc_act_in_hw(). The fix adds a guard to skip ERR_PTR entries while it...

Linux Distros Unpatched Vulnerability : CVE-2026-22987

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: actapi: avoid dereferencing ERRPTR in tcfidrinfodestroy syzbot reported a crash in tcactinhw during netns teardown where tcfidrinfodestroy passed an...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21858)

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-2025-21858 advisory. - In the Linux kernel, the following vulnerability has been resolved: geneve: Fix use-after-free in...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000768)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000768 advisory. Use-after-free vulnerability in drivers/net/ppp/pppgeneric.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service memory corruption and...

CVE-2025-68768

In the Linux kernel, the following vulnerability has been resolved: inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually modprobe often loading a driver like ipvlan, trying to take the lock a...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002585)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002585 advisory. Use-after-free vulnerability in drivers/net/ppp/pppgeneric.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service memory corruption and...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002942)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002942 advisory. Use-after-free vulnerability in drivers/net/ppp/pppgeneric.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service memory corruption and...

SUSE CVE-2025-71066

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove class from active list before deleting in etsqdiscchange [email protected] says: The vulnerability is a race condition between etsqdiscdequeue and etsqdiscchange. It leads to UAF on stru...

AZL-74360 CVE-2025-68768 affecting package kernel for versions less than 6.6.143.1-1

In the Linux kernel, the following vulnerability has been resolved: inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually modprobe often loading a driver like ipvlan, trying to take the lock a...

CVE-2025-68768

In the Linux kernel, the following vulnerability has been resolved: inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually modprobe often loading a driver like ipvlan, trying to take the lock a...

CVE-2025-71097 ipv4: Fix reference count leak when using error routes with nexthop objects

In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix reference count leak when using error routes with nexthop objects When a nexthop object is deleted, it is marked as dead and then fibtableflush is called to flush all the routes that are using the dead nexthop. The...

CVE-2025-68768 inet: frags: flush pending skbs in fqdir_pre_exit()

In the Linux kernel, the following vulnerability has been resolved: inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually modprobe often loading a driver like ipvlan, trying to take the lock a...

Linux Distros Unpatched Vulnerability : CVE-2025-68768

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually...

SUSE CVE-2023-54200

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: always release netdev hooks from notifier This reverts "netfilter: nftables: skip netdev events generated on netns removal". The problem is that when a veth device is released, the veth release callback will...

EUVD-2023-60441

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: always release netdev hooks from notifier This reverts "netfilter: nftables: skip netdev events generated on netns removal". The problem is that when a veth device is released, the veth release callback will...

CVE-2023-54276 nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net

In the Linux kernel, the following vulnerability has been resolved: nfsd: move init of percpu replycachestats counters back to nfsdinitnet Commit f5f9d4a314da "nfsd: move reply cache initialization into nfsd startup" moved the initialization of the reply cache into nfsd startup, but didn't accoun...

CVE-2023-54200

The CVE-2023-54200 issue affects the Linux kernel netfilter nf_tables hooks for netdev: they are now always released from the notifier, reverting a previous change that skipped netdev events on netns removal. The bug can cause a use-after-free in nf_hook_entry_head (KASAN) when a veth release que...

PT-2025-54029

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's netfilter component, specifically within the nf tables subsystem. The issue involves the improper handling of network device netdev hooks during netwo...

CVE-2022-50655 ppp: associate skb with a device at tx

In the Linux kernel, the following vulnerability has been resolved: ppp: associate skb with a device at tx Syzkaller triggered flow dissector warning with the following: r0 = openat$ppp0xffffffffffffff9c, &0x7f0000000000, 0xc0802, 0x0 ioctl$PPPIOCNEWUNITr0, 0xc004743e, &0x7f00000000c0...

PT-2025-49635

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to PPP Point-to-Point Protocol transmission. Specifically, the issue arises when associating an skb socket buffer with a device during...