Threats Tagged 'ubuntu-cve-2026-98383'
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Threats Tagged 'ubuntu-cve-2026-98383'
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In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL An LWT_SEG6LOCAL program can invalidate its cached SRH with bpf_lwt_seg6_adjust_srh() and then call bpf_skb_pull_data(). The latter may reallocate skb->head, leaving the per-CPU SRH pointer dangling. Post-program SRH validation then writes through that pointer. Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL programs so the verifier rejects this unsafe helper combination. Other LWT program types continue to expose the helper through lwt_out_func_proto(). Join the discussion | GCVE Database | 10/09/2026, 08:16:00 UTC Added: 10/17/2026, 22:22:01 UTC |
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