DirtyFrag-for-dummies

Dirty Frag / CVE-2026-43284 — 研究笔记 概述 该仓库包含一个经过清理的技术示意图和辅助笔记，用于描述通常被称为 Dirty Frag 且针对 xfrm-ESP 路径被追踪为 CVE-2026-43284 的 Linux 内核漏洞。 该问题属于由 Hyunwoo Kim（@v4bel）发现的更广泛的 Dirty Frag 类别。一个相关的 RxRPC 变体被单独追踪为 CVE-2026-43500 。 本材料的目的是： 在系统层面解释漏洞机制； 记录 XFRM ESP、UDP 封装、splice、skb 片段、文件支持页以及页缓存损坏之间的关系；...

CVE-2026-43503

🚨 CVE-2026-43503 — DirtyClone（脏克隆） 当共享内存不再安全共享时。 一个因 Linux 网络协议栈中未正确传播SKBFLSHAREDFRAG 标志而导致的本地权限提升漏洞。 📖 概述 CVE-2026-43503 ，编号为 DirtyClone（脏克隆） ，是一个影响 Linux 内核网络子系统的高危本地权限提升（LPE）漏洞。 该漏洞的存在是因为多个套接字缓冲区（SKB）的分片复制例程在克隆或传输数据包分片时未能保留 SKBFLSHAREDFRAG 标志。...

pppoeject

PPPoEject — Sitio de seguimiento del use-after-free de PPPoE en el kernel de Linux Código fuente del rastreador de estado de parches de PPPoEject : un sitio de una sola página que registra qué distribuciones han publicado una corrección para el use-after-free del skb-head obsoleto en sendmsg de...

CVE-2026-64563_EXP

CVE-2026-64563EXP For experimental research only. The code for prefetch and nperm the memory reference set.gdb needs to be configured is not attached, and since it has not been optimized, the hit probability is low. The author noticed that the vulnerability author has already released relevant...

Linux Distros Unpatched Vulnerability : CVE-2026-90160

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lwtbpf: Restore reserved headroom after xmit program ipfinishoutput2 expands an skb to LLRESERVEDSPACEdev before LWT xmit. An LWTXMIT BPF program can then modif...

Linux Distros Unpatched Vulnerability : CVE-2026-90222

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfc: pn533: hold a reference to the request skb during sendframe pn533sendasync publishes the command and then calls dev-phyops-sendframe. Once dev-cmd is set, ...

Linux Distros Unpatched Vulnerability : CVE-2026-90071

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: schteql: restore skb-dev on the slave failure path teqlmasterxmit sets skb-dev = slave before calling the slave's ndostartxmit, but never restores it...

Oracle Linux 10 : kernel (ELSA-2026-68507)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-68507 advisory. - wifi: ath9k: hifusb: don't dereference hifdev after re-arming firmware request Izabela Bakollari RHEL-241004 CVE-2026-68363 - wifi: iwlwifi: mld:...

CVE-2026-93149

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: avoid NULL skb in stop queue drain mac80211hwsimstop drops any frames left in data-pending. The loop currently checks skbqueueempty and then dequeues separately. That split is racy with TX status handling,...

CVE-2026-90417

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix deregskb leak and double free in writetptentry When the device is in the fatal error state, writetptentry returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure...

AZL-102695 CVE-2026-90417 affecting package kernel 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix deregskb leak and double free in writetptentry When the device is in the fatal error state, writetptentry returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure...

DEBIAN-CVE-2026-90222

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: hold a reference to the request skb during sendframe pn533sendasync publishes the command and then calls dev-phyops-sendframe. Once dev-cmd is set, an incoming frame can be matched to this command: the I2C threaded IR...

CVE-2026-90160

In the Linux kernel, the following vulnerability has been resolved: lwtbpf: Restore reserved headroom after xmit program ipfinishoutput2 expands an skb to LLRESERVEDSPACEdev before LWT xmit. An LWTXMIT BPF program can then modify the skb head and still return BPFOK, so bpfxmit rechecks the...

AZL-102935 CVE-2026-90160 affecting package kernel 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: lwtbpf: Restore reserved headroom after xmit program ipfinishoutput2 expands an skb to LLRESERVEDSPACEdev before LWT xmit. An LWTXMIT BPF program can then modify the skb head and still return BPFOK, so bpfxmit rechecks the...

DEBIAN-CVE-2026-90145

In the Linux kernel, the following vulnerability has been resolved: hinic3: Fix skb linearization mismatch and drop skb when skbchecksumhelp failed Previously, hinic3sendoneskb cached the skb fragment count before calling hinic3txoffload. If hinic3txcsum falls back to skbchecksumhelp for...

DEBIAN-CVE-2026-90071

In the Linux kernel, the following vulnerability has been resolved: net/sched: schteql: restore skb-dev on the slave failure path teqlmasterxmit sets skb-dev = slave before calling the slave's ndostartxmit, but never restores it when that transmit fails. The skb then walks on to the next slave...

CVE-2026-90071

In the Linux kernel, the following vulnerability has been resolved: net/sched: schteql: restore skb-dev on the slave failure path teqlmasterxmit sets skb-dev = slave before calling the slave's ndostartxmit, but never restores it when that transmit fails. The skb then walks on to the next slave...

AZL-101894 CVE-2026-90071 affecting package kernel 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: schteql: restore skb-dev on the slave failure path teqlmasterxmit sets skb-dev = slave before calling the slave's ndostartxmit, but never restores it when that transmit fails. The skb then walks on to the next slave...

CVE-2026-90051

In the Linux kernel, the following vulnerability has been resolved: tcp: reject non zerocopy devmem tx Devmem tcp tx doesn't work without zero-copy, however it's not currently enforced if NETIFFSG isn't present. In this case, tcpsendmsglocked will try the copy path and try to copy data from an...

DEBIAN-CVE-2026-90051

In the Linux kernel, the following vulnerability has been resolved: tcp: reject non zerocopy devmem tx Devmem tcp tx doesn't work without zero-copy, however it's not currently enforced if NETIFFSG isn't present. In this case, tcpsendmsglocked will try the copy path and try to copy data from an...