SUSE-SU-2026:22458-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-38549: efivarfs: Fix memory leak of efivarfsfsinfo in...

Linux Distros Unpatched Vulnerability : CVE-2026-53212

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: nfttunnel: fix use-after-free on object destroy nfttunnelobjdestroy calls metadatadstfree which directly kfrees the metadatadst, ignoring the dstentr...

Linux Distros Unpatched Vulnerability : CVE-2026-53247

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: ethernet: mtkethsoc: Fix use-after-free in metadata dst teardown mtkfreedev calls metadatadstfree which frees the metadatadst with kfree immediately,...

SUSE CVE-2026-53212

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...

SUSE CVE-2026-53248

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...

CVE-2026-53247

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

UBUNTU-CVE-2026-53248

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...

CVE-2026-53248 net: airoha: Fix use-after-free in metadata dst teardown

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...

CVE-2026-53248 net: airoha: Fix use-after-free in metadata dst teardown

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...

CVE-2026-53247

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

EUVD-2026-39198

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

CVE-2026-53247

CVE-2026-53247: Linux kernel MTK ethernet driver (mtk_eth_soc) fix for use-after-free in metadata_dst teardown. mtk_free_dev() previously called metadata_dst_free() (kfree’d immediately, bypassing RCU). In RX, skb_dst_set_noref() kept non-refcounted pointers to metadata_dst; freed memory could ra...

CVE-2026-53247 net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown

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

CVE-2026-53212

The CVE-2026-53212 issue affects the Linux kernel nft_tunnel implementation within netfilter, where nft_tunnel_obj_destroy() used metadata_dst_free() to free a metadata_dst, bypassing dst_entry refcount accounting. This could leave in-flight packets that hold references (via dst_hold()) dangling,...

PT-2026-52342

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the mtk eth soc ethernet driver. The mtk free dev function calls metadata dst free, which uses kfree to immediately release metadata dst memory, bypassin...

CVE-2026-53092 bpf: Fix linked reg delta tracking when src_reg == dst_reg

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix linked reg delta tracking when srcreg == dstreg Consider the case of rX += rX where srcreg and dstreg are pointers to the same bpfregstate in adjustregminmaxvals. The latter first modifies the dstreg in-place, and later ...

PT-2026-51972

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF sock ops program when accessing ctx fields where the destination register dst reg is the same as the source register src reg. In the !fullsock or !locked tcp...

kernel: smc: Fix use-after-free in __pnet_find_base_ndev()

In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in pnetfindbasendev. syzbot reported use-after-free of netdevice in pnetfindbasendev, which was called during connect. 0 smcpnetfindismresource fetches skdstgetsk-dev and passes down to pnetfindbasendev,...

kernel: net: use dst_dev_rcu() in sk_setup_caps()

In the Linux kernel, the following vulnerability has been resolved: net: use dstdevrcu in sksetupcaps Use RCU to protect accesses to dst-dev from sksetupcaps and skdstgsomaxsize. Also use dstdevrcu in ip6dstmtumaybeforward, and ipdstmtumaybeforward. ip4dsthoplimit can use dstdevnetrcu...

kernel: net: use dst_dev_rcu() in sk_setup_caps()

In the Linux kernel, the following vulnerability has been resolved: net: use dstdevrcu in sksetupcaps Use RCU to protect accesses to dst-dev from sksetupcaps and skdstgsomaxsize. Also use dstdevrcu in ip6dstmtumaybeforward, and ipdstmtumaybeforward. ip4dsthoplimit can use dstdevnetrcu...