Linux kernel security vulnerabilities

A security vulnerability exists in Linux kernel version 5.16. It stems from the ice driver’s use of metadatadstfree to release metadatadst when removing a representer; no checks are performed on the dstentry reference count. This may lead to use-after-free conditions if packets remain queued on...

CVE-2026-53212 netfilter: nft_tunnel: fix use-after-free on object destroy

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfttunnel: fix use-after-free on object destroy nfttunnelobjdestroy calls metadatadstfree which directly kfrees the metadatadst, ignoring the dstentry refcount. Packets that took a reference via dsthold in...

CVE-2026-53212 netfilter: nft_tunnel: fix use-after-free on object destroy

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfttunnel: fix use-after-free on object destroy nfttunnelobjdestroy calls metadatadstfree which directly kfrees the metadatadst, ignoring the dstentry refcount. Packets that took a reference via dsthold in...

CVE-2026-53248: Use After Free

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free in metadata dst teardown airohametadatadstfree runs metadatadstfree which frees the metadatadst with kfree immediately, bypassing the RCU grace period. In the RX path, skbdstsetnoref sets a...