{"id":"CVE-2026-99043","published":"2026-10-23T13:17:27.723","lastModified":"2026-10-23T13:17:27.723","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix metadata_dst refcount handling on representor teardown\n\nice_eswitch_release_repr() uses metadata_dst_free() to release the\nrepresentor's metadata_dst.  metadata_dst_free() directly frees the\nunderlying memory without checking the dst_entry refcount.\n\nWhen ice_eswitch_port_start_xmit() processes a packet, it takes a\nreference via dst_hold() and attaches the metadata_dst to the skb.\nIf the representor is torn down while packets are still queued on\nthe lower device (e.g. in a qdisc), the metadata_dst is freed while\nreferences are still held.\n\nUse dst_release() instead, which correctly decrements the refcount\nand only frees the object when all references are dropped.  The dst\nsubsystem already handles metadata_dst cleanup in dst_destroy() when\nDST_METADATA is set.\n\nOther drivers sharing this pattern (nfp, airoha, bnxt) already use\ndst_release() for their metadata_dst lifecycle.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/1f263235651775f93c15d90c9f25c3f4a4ef6512","tags":[]},{"url":"https://git.kernel.org/stable/c/58858b8f14803a7eeac297b3ce20f3b21bf2ff66","tags":[]},{"url":"https://git.kernel.org/stable/c/5e4d20db5179e83a4948927bc39e489a9a83256d","tags":[]},{"url":"https://git.kernel.org/stable/c/6f5544f53f1e58ea8a49fb9f9158d5793b9205b0","tags":[]},{"url":"https://git.kernel.org/stable/c/beb05f484a1e4a5a66e3678e4b7f3147f651c080","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}