EUVD-2026-34129

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...

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 -...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004252)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004252 advisory. A flaw was found in the HDLCPPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation i...

Linux Distros Unpatched Vulnerability : CVE-2023-53106

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: nfc: st-nci: Fix use after free bug in ndlcremove due to race condition This bug influences...

UBUNTU-CVE-2023-53106

In the Linux kernel, the following vulnerability has been resolved: nfc: st-nci: Fix use after free bug in ndlcremove due to race condition This bug influences both stncii2cremove and stncispiremove. Take stncii2cremove as an example. In stncii2cprobe, it called ndlcprobe and bound &ndlc-smwork...

Motorola Solutions MDLC 加密问题漏洞

Motorola Solutions MDLC is a data communications protocol from Motorola Solutions. Motorola Solutions MDLC suffers from a cryptographic issue vulnerability that stems from MDLC's legacy encryption mode that encrypts traffic using a Tiny Encryption Algorithm TEA group cipher in ECB mode, which doe...

kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow

A flaw was found in the HDLCPPP module of the Linux kernel. Memory corruption and a read overflow is caused by improper input validation in the pppcpparsecr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data...

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

...

UBUNTU-CVE-2020-25643

A flaw was found in the HDLCPPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the pppcpparsecr function which can cause the system to crash or cause a denial of service. The highest threat from this...

Tcpdump Cisco HDLC Parser Buffer Overflow Vulnerability

Tcpdump is a set of sniffing tools developed by the Tcpdump team that run under the command line. The tools allow users to intercept and display TCP/IP and other packets sent or received over a network connection to that computer.Cisco HDLC parser is one of the advanced data link control protocol...

kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release()

A race condition flaw was found in the NHLDC Linux kernel driver when accessing nhdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system...

kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release()

A race condition flaw was found in the NHLDC Linux kernel driver when accessing nhdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system...