tag
Linux
Ubuntu Linux Kernel PPPoL2TP Use-After-Free Local Privilege Escalation (CVE-2026-68398)
CVE-2026-68398 is a use-after-free race condition between PPPoL2TP receive processing and destruction of a bound-but-unattached PPP channel in the Linux kernel. The PPPoX socket and its embedded pppchannel are RCU-safe, but the internal struct channel used by…
Linux nf_tables Catchall Set Element UAF -- Local Privilege Escalation (CVE-2026-23111)
CVE-2026-23111 is a use-after-free in the Linux nftables subsystem caused by an inverted genmask check in nftmapcatchallactivate(). During transaction abort, the handler skips inactive catchall elements that need reactivation and processes active ones that do…
Linux AF_UNIX GC vs MSG_PEEK Use-After-Free Container Escape (CVE-2026-53361)
CVE-2026-53361 is a use-after-free in the Linux AFUNIX socket garbage collector triggered via a MSGPEEK race. The GC reclaims in-flight sockets forming unreachable reference cycles, but a concurrent MSGPEEK can take a reference the GC census never counts. The…
Linux Kernel — SCTPhantom: SCTP ASCONF DEL-IP Use-After-Free Local Privilege Escalation (CVE-2026-64564)
CVE-2026-64564 is a use-after-free vulnerability in the Linux kernel SCTP ASCONF DEL-IP processing. When a multihomed SCTP association processes an ASCONF chunk that deletes an IP address, the associated transport structure is freed but a dangling pointer…
Linux Kernel — qdisc Rate-Table Race Condition Local Privilege Escalation (CVE-2026-68138)
CVE-2026-68138 is a race condition in the Linux kernel traffic-control rate-table code that leads to a use-after-free or double-free of struct qdiscratetable. The flower classifier sets TCFPROTOOPSDOITUNLOCKED, allowing RTMNEWTFILTER requests to reach…
Linux Kernel — OVSwrap: Open vSwitch Conntrack Local Privilege Escalation (CVE-2026-64531)
CVE-2026-64531 is a memory corruption vulnerability in the Linux kernel Open vSwitch (OVS) conntrack subsystem. The exploit, named OVSwrap, uses OVS Generic Netlink operations to corrupt conntrack timeout and labels carrier objects, establishing kernel read…
Docker — CopyEscape: Container-to-Host Escape via docker cp Race Condition (CVE-2026-17106)
CVE-2026-17106, nicknamed CopyEscape, is a race condition in Docker's docker cp command that allows a malicious running container to escape and write arbitrary files on the Docker host. The vulnerability exists in how Docker's archive producer walks the…
Sudo `chroot` Option Local Privilege Escalation (CVE-2025-32463)
Sudo's -R/--chroot option allowed an unprivileged local user to make sudo chroot() into a directory the user controls before sudo resolves and loads NSS (Name Service Switch) configuration and modules. Because sudo continues to consult /etc/nsswitch.conf and…
snapd snap-confine / systemd-tmpfiles Race Condition LPE (CVE-2026-3888)
snap-confine's writable-mimic setup performs a directory swap while constructing a snap's mount namespace, and races with systemd-tmpfiles during this window. A local attacker can exploit this race to poison the namespace being constructed for a privileged…
Pardus Software Center Local Privilege Escalation via APT Option Injection (CVE-2026-14459 / CVE-2026-14460)
Two local privilege-escalation flaws affect the pardus-software package that powers the Pardus Software Center's PolicyKit-mediated install/update helpers. CVE-2026-14459 (CWE-88, argument injection) arises because the privileged Actions.py helper splits its…
PackageKit TOCTOU Local Privilege Escalation (CVE-2026-41651)
PackageKit's transaction handling in src/pk-transaction.c contains a set of logic flaws that combine into a TOCTOU (time-of-check to time-of-use) race condition, nicknamed "Pack2TheRoot" by the researcher. InstallFiles() overwrites cached transaction…
Fortinet FortiClientLinux VPN Config Symlink/Shared-Object Loading LPE — CVE-2026-24018
FortiClientLinux allows a VPN connection profile to reference a custom pre/post-connect shared object (.so) file path that gets loaded by a component of the client running with elevated privileges. Because the path is followed without validating…
BlueDucky — Unauthenticated Peering Leading to Code Execution (CVE-2023-45866)
BlueDucky is a practical PoC implementation for CVE-2023-45866. It automates Bluetooth device discovery/selection and then emulates HID keyboard input to inject attacker-controlled DuckyScript payloads on vulnerable nearby targets. Because the pairing…