CVE-2026-68423 mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy()

In the Linux kernel, the following vulnerability has been resolved: mtd: virtconcat: fix use-after-free in mtdvirtconcatdestroy mtdconcatdestroy frees item-concat so calling mtdvirtconcatputmtddevicesitem-concat after that leads to a use-after-free. Fix it by moving mtdvirtconcatputmtddevices...

CVE-2026-68422 btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix root leak if its reloc root is unexpected in mergerelocroots If we have an unexpected relocroot for our root, we jump to the out label but never drop the reference we obtained for root, resulting in a leak. Add a missi...

CVE-2026-68421 sched_ext: Don't warn on core-sched forced idle in put_prev_task_scx()

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't warn on core-sched forced idle in putprevtaskscx putprevtaskscx warns when a runnable task drops to a lower schedclass without SCXOPSENQLAST, on the assumption that balanceone would have kept it running. Core...

CVE-2026-68420 xfrm: reject optional IPTFS templates in outbound policies

In the Linux kernel, the following vulnerability has been resolved: xfrm: reject optional IPTFS templates in outbound policies syzbot reported a stack-out-of-bounds read in xfrmstatefind which flows from xfrmtmplresolveone. Commit 3d776e31c841 "xfrm: Reject optional tunnel/BEET mode templates in...

CVE-2026-68419 RDMA/irdma: Prevent rereg_mr for non-mem regions

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent reregmr for non-mem regions When a QP/CQ/SRQ is created, a two step process is used where the buffer is allocated in userspace and explicitly registered with the normal regmr mechanism prior to creating the...

CVE-2026-68418 RDMA/irdma: Prevent user-triggered null deref on QP create

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent user-triggered null deref on QP create Previously, the user QP creation path would only attempt to populate iwqp-iwpbl if the user-provided req.userwqebufs field was non-zero. The problem is that iwqp-iwpbl is...

CVE-2026-68417 RDMA/siw: publish QP after initialization

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: publish QP after initialization siwcreateqp currently calls siwqpadd before the queues, CQ pointers, state, completion, and device list entry are ready. A QPN lookup can therefore reach a QP that is still being...

CVE-2026-68416 mtd: fix double free and WARN_ON in add_mtd_device() error paths

In the Linux kernel, the following vulnerability has been resolved: mtd: fix double free and WARNON in addmtddevice error paths When deviceregister or mtdnvmemadd fails inside addmtddevice for a partition, the error handling triggers mtdrelease via putdevice or deviceunregister. mtdrelease calls...

CVE-2026-68415 xfrm: clear mode callbacks after failed mode setup

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear mode callbacks after failed mode setup xfrmstategctask can run long after a failed IPTFS state setup. In the reproduced case, xfrminitstate cached x-modecbs, IPTFS setup returned -ENOMEM before publishing modedata, an...

CVE-2026-68415 xfrm: clear mode callbacks after failed mode setup

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear mode callbacks after failed mode setup xfrmstategctask can run long after a failed IPTFS state setup. In the reproduced case, xfrminitstate cached x-modecbs, IPTFS setup returned -ENOMEM before publishing modedata, an...

CVE-2026-68415

The CVE-2026-68415 entry documents a Linux kernel xfrm (IPSec) flaw where xfrm_state_gc_task can dereference stale mode_cbs after a failed IPTFS state setup and subsequent module unload. The root cause is failing to clear x->mode_cbs before publishing mode_data, allowing deferred GC to access ...

CVE-2026-68415

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear mode callbacks after failed mode setup xfrmstategctask can run long after a failed IPTFS state setup. In the reproduced case, xfrminitstate cached x-modecbs, IPTFS setup returned -ENOMEM before publishing modedata, an...

EUVD-2026-55601

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear mode callbacks after failed mode setup xfrmstategctask can run long after a failed IPTFS state setup. In the reproduced case, xfrminitstate cached x-modecbs, IPTFS setup returned -ENOMEM before publishing modedata, an...

CVE-2026-68414 wifi: cfg80211: cancel sched scan results work on unregister

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel sched scan results work on unregister cfg80211schedscanresults can queue rdev-schedscanreswk from a driver result notification while a scheduled scan request is present. The work callback recovers the...

CVE-2026-68413 wifi: ipw2100: fix potential memory leak in ipw2100_pci_init_one()

In the Linux kernel, the following vulnerability has been resolved: wifi: ipw2100: fix potential memory leak in ipw2100pciinitone The memory allocated in the ipw2100allocdevice function is not freed in some of the error paths in ipw2100pciinitone. Fix that by converting the direct return into a...

CVE-2026-68412 wifi: cfg80211: Fix an error handling path in cfg80211_wext_siwscan()

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Fix an error handling path in cfg80211wextsiwscan If the test against IEEE80211MAXSSIDLEN fails, then 'creq' leaks. Use the existing error handling path to fix it...

CVE-2026-68411 wifi: mac80211_hwsim: clamp virtio RX length before skb_put

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a fixed-size receive skb. A backend reporting a length larger than the...

CVE-2026-68410 wifi: libertas: fix memory leak in helper_firmware_cb()

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix memory leak in helperfirmwarecb helperfirmwarecb neglects to free the single-stage firmware image after a successful async load, leading to a memory leak in the USB firmware-download path. Fix this memory leak...

CVE-2026-68409 wifi: mac80211: defer link RX stats percpu free to RCU

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: defer link RX stats percpu free to RCU staremovelink frees a removed MLO link's RX stats percpu buffer right away, but defers only the link container to RCU: stainfofreelink&alloc-info; kfreercualloc, rcuhead; The...

CVE-2026-68408 wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: convert pmsrfreewk to wiphywork to fix deadlock When a netlink socket that owns a PMSR session is closed, cfg80211releasepmsr clears the request's nlportid and queues pmsrfreewk to call cfg80211pmsrprocessabort...