CVE-2026-63803

A flaw was found in the Linux kernel's hdlcppp module. This use-after-free vulnerability occurs because the Point-to-Point Protocol PPP control timers are not properly synchronized before the associated memory is freed. An attacker could potentially exploit this by triggering a race condition,...

SUSE CVE-2026-63803

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

CVE-2026-63803

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

CVE-2026-63803 hdlc_ppp: sync per-proto timers before freeing hdlc state

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

CVE-2026-63803 hdlc_ppp: sync per-proto timers before freeing hdlc state

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

CVE-2026-63803

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

CVE-2026-63803

The CVE-2026-63803 has concrete technical details in the Linux kernel: hdlc_ppp timers for PPP LCP/IPCP/IPV6CP in struct ppp are not synchronized on teardown due to a missing .detach callback, causing a use-after-free when a ppp_timer dereferences freed memory. The fix adds a detach helper that c...

PT-2026-61119

In the Linux kernel, the following vulnerability has been resolved: hdlc ppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timer setup. That struct ppp is the hdlc-state allocation, which detach hdlc protoco...

Astra Linux – Vulnerability in Linux

A flaw was discovered in the HDLCPPP module of the Linux kernel in versions prior to 5.9-rc7. Memory corruption and a read overflow occur due to improper input validation in the pppcpparsecr function, which can cause the system to crash or lead to a denial of service. The greatest threat posed by...

CVE-2026-46267 nfc: hci: shdlc: Stop timers and work before freeing context

In the Linux kernel, the following vulnerability has been resolved: nfc: hci: shdlc: Stop timers and work before freeing context llcshdlcdeinit purges SHDLC skb queues and frees the llcshdlc structure while its timers and state machine work may still be active. Timer callbacks can schedule smwork...

SUSE CVE-2026-46041

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlctxframes hdlcappend calls usleeprange to wait for circular buffer space, but it is called with txproducerlock a spinlock held via hdlctxframes -...

CVE-2026-46041

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlctxframes hdlcappend calls usleeprange to wait for circular buffer space, but it is called with txproducerlock a spinlock held via hdlctxframes -...

CVE-2026-46041

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlctxframes hdlcappend calls usleeprange to wait for circular buffer space, but it is called with txproducerlock a spinlock held via hdlctxframes -...

CVE-2026-46041 greybus: gb-beagleplay: fix sleep in atomic context in hdlc_tx_frames()

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlctxframes hdlcappend calls usleeprange to wait for circular buffer space, but it is called with txproducerlock a spinlock held via hdlctxframes -...

CVE-2026-46041

CVE-2026-46041 affects the Linux kernel with a fix for sleeping in an atomic context in the hdlc path used by greybus/gb-beagleplay. The root cause is that hdlc_append() calls usleep_range() while tx_producer_lock (a spinlock) is held, risking a BUG: scheduling while atomic. The workaround is to ...

CVE-2026-46041

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlctxframes hdlcappend calls usleeprange to wait for circular buffer space, but it is called with txproducerlock a spinlock held via hdlctxframes -...

PT-2026-43908

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified openSUSE Tumbleweed versions prior to kernel-devel-7.0.11-1.1 Description A flaw exists in the greybus gb-beagleplay component where the hdlc append function calls usleep range while the tx producer...

SUSE CVE-2026-43149

In the Linux kernel, the following vulnerability has been resolved: net: wan/fslucchdlc: Fix dmafreecoherent in uhdlcmemclean The priv-rxbuffer and priv-txbuffer are alloc'd together as contiguous buffers in uhdlcinit but freed as two buffers in uhdlcmemclean. Change the cleanup to only call...

CVE-2026-43149

A flaw was found in the Linux kernel's fslucchdlc module. The uhdlcmemclean function incorrectly deallocates memory by calling dmafreecoherent twice for buffers that were allocated as a single contiguous block. This improper memory handling may lead to a denial of service DoS or other unpredictab...

CVE-2026-43149

In the Linux kernel, the following vulnerability has been resolved: net: wan/fslucchdlc: Fix dmafreecoherent in uhdlcmemclean The priv-rxbuffer and priv-txbuffer are alloc'd together as contiguous buffers in uhdlcinit but freed as two buffers in uhdlcmemclean. Change the cleanup to only call...