CVE-2026-31429-POC

CVE-2026-31429 — Linux Kernel: Cross-Cache Free of KFENCE-Allocated SKB Head via bpfprogtestrunskb Severity: Medium CWE-763: Release of Invalid Pointer or Reference Published: 2026-04-20 Affected subsystem: net/core/skbuff.c — skbkfreehead Researcher: Antonius / w1sdom — Blue Dragon Security...

Linux Distros Unpatched Vulnerability : CVE-2026-72234

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: access unicastttvn skb-data only after skb realloc The pskbmaypull called by batadvgetvid could reallocate the buffer behind the skb. Variables whic...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

Linux Distros Unpatched Vulnerability : CVE-2026-74324

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wifi: mt76: mt7925: validate skb length in testmode query In mt7925tmquery, the response skb from mt76mcusendandgetmsg is used in a memcpy without validating i...

Linux Distros Unpatched Vulnerability : CVE-2026-72057

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: actct: preserve tcskbcb across defragmentation tcfcthandlefragments calls nfcthandlefragments without saving and restoring skb-cb. The defrag helper...

PT-2026-72522

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix malformed ISO END/CONT handling Core specification Part C vol 4 sec 5.4.5 does not exclude empty ISO CONT, ISO END packets. We currently reject them if they are last. If controller sends malformed sequence ISO...

RLSA-2026:54246 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: udf: fix partition descriptor append bookkeeping CVE-2026-45991 kernel: ice: fix double-free of txbuf skb CVE-2026-53009 For more details about the security issues, including the impact, ...

kernel: ice: fix double-free of tx_buf skb

A flaw was found in the Linux kernel's ice network driver. An error in the driver's handling of network packet transmission, specifically when icetso or icetxcsum functions fail, can lead to a double-free of a network buffer skb. This occurs because a transmit buffer txbuf may still point to an...

CVE-2026-68302

A flaw was found in the Linux kernel's Adjacency Management Protocol AMT implementation. Several AMT receive and transmit paths improperly cache pointers to socket buffer skb headers. When a helper function reallocates the skb head, these cached pointers become invalid, leading to a use-after-fre...

mac802154: llsec: add skb_cow_data() before in-place crypto

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EUVD-2026-26631

In the Linux kernel, the following vulnerability has been resolved: NFC: pn533: bound the UART receive buffer pn532receivebuf appends every incoming byte to dev-recvskb and only resets the buffer after pn532uartrxisframe recognizes a complete frame. A continuous stream of bytes without a valid...

Linux Distros Unpatched Vulnerability : CVE-2025-68765

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mt76: mt7615: Fix memory leak in mt7615mcuwtblstaadd In mt7615mcuwtblstaadd, an skb sskb is allocated. If the subsequent call to mt76connacmcuallocwtblreq fails...

EUVD-2023-60175

In the Linux kernel, the following vulnerability has been resolved: ip6vti: fix slab-use-after-free in decodesession6 When ipv6vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ipv6vti device sen...

CVE-2024-43881

CVE-2024-43881 : In the Linux kernel, the ath12k driver used by wifi in fragmented packets reinjects fragments as normal packets. The DMA direction must be DMA_TO_DEVICE when reinjecting fragments; using DMA_FROM_DEVICE can cause an invalid payload to be reinjected and delivered to the host, enab...

CVE-2024-43881 wifi: ath12k: change DMA direction while mapping reinjected packets

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: change DMA direction while mapping reinjected packets For fragmented packets, ath12k reassembles each fragment as a normal packet and then reinjects it into HW ring. In this case, the DMA direction should be...

CVE-2021-47224

In the Linux kernel, the following vulnerability has been resolved: net: lltemac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid...

CVE-2021-47224

In the Linux kernel, the following vulnerability has been resolved: net: lltemac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid...

CVE-2021-47224

CVE-2021-47224 concerns the Linux kernel ll_temac driver. A use-after-free can occur on the DMA side if the skb is freed while fragments are still in use because the skb pointer was piggy-backed on the first TX buffer descriptor (BD). The resolved description states the fix was to ensure the skb ...