kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem

A flaw was found in the Linux kernel's Asynchronous Transfer Mode ATM subsystem. An authenticated local attacker could exploit a Use-After-Free UAF vulnerability in the /proc/net/atm/lec handling. This flaw occurs due to improper devput calls without prior devhold calls, leading to an imbalance i...

Important: kernel6.18

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix reservation leak in some error paths when inserting inline extent CVE-2025-71268 In the Linux kernel, the following vulnerability has been resolved: btrfs: do not free data reservation in fallback from...

net: add proper RCU protection to /proc/net/ptype

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SUSE CVE-2026-23255

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

EUVD-2026-12886

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

CVE-2026-23255

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

DEBIAN-CVE-2026-23255

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

CVE-2026-23255

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

CVE-2026-23255

The connected Amazon Linux advisory confirms CVE-2026-23255 is a Linux kernel vulnerability where /proc/net/ptype lacked proper RCU protection. The fix adds an explicit device pointer tracking and ensures RCU-compliant reads in ptype_seq_show(), with full READ_ONCE protection in ptype_seq_next() ...

CVE-2026-23255 net: add proper RCU protection to /proc/net/ptype

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

CVE-2026-23255 net: add proper RCU protection to /proc/net/ptype

In the Linux kernel, the following vulnerability has been resolved: net: add proper RCU protection to /proc/net/ptype Yin Fengwei reported an RCU stall in ptypeseqshow and provided a patch. Real issue is that ptypeseqnext and ptypeseqshow violate RCU rules. ptypeseqshow runs under rcureadlock, an...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: atm: fix /proc/net/atm/lec handling /proc/net/atm/lec must ensure safety against devlec changes. It appears that there were calls to devput without prior calls to devhold, leading to imbalance and UAF Use-After-Fault errors...

PT-2026-26115

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to RCU Read-Copy-Update protection in the /proc/net/ptype interface. Specifically, the functions ptype seq next and ptype seq show do not adhere ...

CVE-2023-53987

A flaw was found in the Linux kernel. A local attacker could exploit a potential NULL dereference vulnerability in the ping socket handling when accessing /proc/net/icmp. This issue arises from an incorrect use of Read-Copy Update RCU instead of a spinlock. Successful exploitation of this flaw...

SUSE CVE-2023-53987

In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 "ping: convert to RCU lookups, get rid of rwlock", we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL...

Linux Distros Unpatched Vulnerability : CVE-2023-53987

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 ping: convert to RCU lookups, get rid of rwlock, we use RCU for ping sockets, but w...

CVE-2023-53987

In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 "ping: convert to RCU lookups, get rid of rwlock", we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL...

CVE-2023-53987

In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 "ping: convert to RCU lookups, get rid of rwlock", we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL...

UBUNTU-CVE-2023-53987

In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 "ping: convert to RCU lookups, get rid of rwlock", we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL...

CVE-2023-53987 ping: Fix potentail NULL deref for /proc/net/icmp.

In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 "ping: convert to RCU lookups, get rid of rwlock", we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL...