CVE-2026-74544

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

UBUNTU-CVE-2026-74544

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

CVE-2026-74544

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

CVE-2026-74544

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

EUVD-2026-59737

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

CVE-2026-74544 net/sched: cls_u32: validate offshift to prevent shift-out-of-bounds

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

CVE-2026-74544

The CVE-2026-74544 issue is in the Linux kernel net/sched cls_u32 implementation. u32_change() copies offshift (unsigned char, 0-255) without bounds checks, enabling undefined behavior (shift-out-of-bounds) in u32_classify() when TC_U32_VAROFFSET is set and offshift ≥ 32. Public sources (Linux ke...

CVE-2026-74544 net/sched: cls_u32: validate offshift to prevent shift-out-of-bounds

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: validate offshift to prevent shift-out-of-bounds u32change copies the user-provided tcu32sel.offshift unsigned char, 0-255 into the kernel knode object without bounds validation. When a packet later hits...

Linux Distros Unpatched Vulnerability : CVE-2023-4208

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A use-after-free vulnerability in the Linux kernel's net/sched: clsu32 component can be exploited to achieve local privilege escalation. When u32change is calle...

Linux kernel net/sched u32_change Privilege Escalation

The vulnerability of the u32change function, which is used by the link counter in the net/sched component of the Linux operating system’s kernel, is related to errors during link counter updates. Exploiting this vulnerability can allow an attacker to elevate their privileges to the root level...