EUVD-2026-39216

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: check allocation under invalidate lock commit 2d1f7b65f5de "dm cache policy smq: fix missing locks in invalidating cache blocks" added mq-lock around the destructive part of smqinvalidatemapping, but left the...

EUVD-2026-39215

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

CVE-2026-53263

In Linux kernel CVE-2026-53263, the 6lowpan multicast context address compression had an off‑by‑one in the second memcpy of lowpan_iphc_mcast_ctx_addr_compress(), using data[1] and ipaddr->s6_addr[11] instead of data[2] and ipaddr->s6_addr[12]. This caused data[1] to be overwritten (RIID co...

EUVD-2026-39213

In the Linux kernel, the following vulnerability has been resolved: l2tp: pppol2tp: hold reference to session in pppol2tpioctl pppol2tpioctl read sock-sk-skuserdata directly without any locks or reference counting. If a controllable sleep was induced during copyfromuser e.g. via a userfaultfd pag...

CVE-2026-53262

Affected component: Linux kernel l2tp PPPoL2TP ioctl path. The vulnerability arises because pppol2tp_ioctl() read sock->sk->sk_user_data without locks or reference counting. A controllable sleep during copy_from_user (e.g., userfaultfd sleep) could allow a concurrent socket close to trigger...

EUVD-2026-39212

In the Linux kernel, the following vulnerability has been resolved: devlink: Release nested relation on devlink free devlink relation state is normally released from devlunregister, which calls devlinkrelput. This misses devlink instances that get a nested relation before registration and then fa...

EUVD-2026-39211

In the Linux kernel, the following vulnerability has been resolved: tcp: Add preemptdisable,enablenested in reqskqueuehashreq. syzbot reported a weird reqsk-rskrefcnt underflow in inetcskreqskqueuedrop. The captured reqskput in inetcskreqskqueuedrop is called only when it successfully removes req...

EUVD-2026-39210

In the Linux kernel, the following vulnerability has been resolved: ipv6: anycast: insert aca into global hash under idev-lock syzbot reported a splat 1: a slab-use-after-free in ipv6chkacastaddr, which walks the global inet6acaddrlst hash under RCU and dereferences a struct ifacaddr6 that has...

EUVD-2026-39209

In the Linux kernel, the following vulnerability has been resolved: wifi: fix leak if split 6 GHz scanning fails rdev-intscanreq is leaked if cfg80211scan fails. Note that it's supposed to be released at cfg80211scandone but this doesn't happen as rdev-scanreq is NULL at that point, too, leading ...

CVE-2026-53258

The CVE describes a memory leak in the Linux kernel wlan 6 GHz scanning path. Root cause: rdev->int_scan_req is leaked when cfg80211_scan() fails, because the expected release at ___cfg80211_scan_done() doesn’t occur since rdev->scan_req is NULL at that point, causing the freeing function t...

EUVD-2026-39208

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: enforce HE/EHT cap/oper consistency Xiang Mei reports that mac80211 could crash if ehtcap is set but ehtoper isn't. Rather than fixing that for the individual users, enforce that both HE/EHT have consistent elemen...

EUVD-2026-39205

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in MCC handlers The RFCOMM MCC handlers cast skb-data to protocol-specific structs without validating skb-len first. A malicious remote device can send truncated MCC frames and trigger...

EUVD-2026-39206

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate advertising TLV before type checks tlvdataisvalid reads each advertising data field length from datai, then inspects datai + 1 for managed EIR types before checking that the current field still fits insi...

CVE-2026-53255

CVE-2026-53255 (Linux kernel Bluetooth MGMT TLV parsing) : The vulnerability arises in tlv_data_is_valid() where the advertising data field length is read from data[i] and the parser inspects data[i+1] for EIR types before confirming the field fits in the buffer. A malformed field whose length by...

EUVD-2026-39204

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: reject short frames before parsing A BNEP peer can send a short BNEP SDU. bneprxframe reads the packet type byte immediately and, for control packets, reads the control opcode and setup UUID-size byte before...

EUVD-2026-39202

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix not releasing hdev reference on isoconnbigsync hcigetroute returns a reference-counted hcidev pointer via hcidevhold. The function exits normally or with an error without ever releasing it...

CVE-2026-53251

In the Linux kernel Bluetooth ISO path, CVE-2026-53251 is due to hci_get_route() returning a reference-counted hci_dev pointer via hci_dev_hold(), and the function may exit without releasing that reference on both normal and error paths. This results in a not-released hdev reference within iso_co...

EUVD-2026-39201

In the Linux kernel, the following vulnerability has been resolved: xsk: cache csumstart/csumoffset to fix TOCTOU in xskskbmetadata The TX metadata area resides in the UMEM buffer which is memory-mapped and concurrently writable by userspace. In xskskbmetadata, csumstart and csumoffset are read...

CVE-2026-53250

Linux kernel vulnerability CVE-2026-53250 in the xsk path (xsk_skb_metadata) allowed a race between reads of csum_start and csum_offset from shared UMEM memory, letting a malicious userspace overwrite values between validation and skb assignment. The fix caches csum_start and csum_offset in local...

EUVD-2026-39200

In the Linux kernel, the following vulnerability has been resolved: ipv4: restrict IPOPTSSRR and IPOPTLSRR options This patch restricts setting Loose Source and Record Route LSRR and Strict Source and Record Route SSRR IP options to users with CAPNETRAW capability. This prevents unprivileged...