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CVE-2026-53220

In the Linux kernel, the following vulnerability has been resolved: netfilter: revalidate bridge ports ebt_redirect_tg() dereferences br_port_get_rcu() return without a NULL check, causing a kernel panic when the bridge port has been removed between the original hook invocation and an NFQUEUE reinject. A mere NULL check isn't sufficient, however. As sashiko review points out userspace can not only remove the port from the bridge, it could also place the device in a different virtual device,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f0a75e6dc3177e65d8c5c18ee0212df87af0f49ff6ba2a1e8eb0751144a72c2a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/netfilter/ebt_dnat.c","net/bridge/netfilter/ebt_redirect.c","net/netfilter/nfnetlink_log.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.36"},{"lessThan":"2.6.36","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionTy…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/netfilter/ebt_dnat.c","net/bridge/netfilter/ebt_redirect.c","net/netfilter/nfnetlink_log.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"43330a1e8aace6b5a8de9aba127e9e394ab49b0f","status":"affected","version":"f350a0a87374418635689471606454abc7beaa3a","versionType":"git"},{"lessThan":"4beffcd726e2a731cea4dc18e1fbc55c8d76f1a0","status":"affected","version":"f350a0a87374418635689471606454abc7beaa3a","versionType":"gi…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/netfilter/ebt_dnat.c","net/bridge/netfilter/ebt_redirect.c","net/netfilter/nfnetlink_log.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.36"},{"lessThan":"2.6.36","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionTy…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/netfilter/ebt_dnat.c","net/bridge/netfilter/ebt_redirect.c","net/netfilter/nfnetlink_log.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"43330a1e8aace6b5a8de9aba127e9e394ab49b0f","status":"affected","version":"f350a0a87374418635689471606454abc7beaa3a","versionType":"git"},{"lessThan":"4beffcd726e2a731cea4dc18e1fbc55c8d76f1a0","status":"affected","version":"f350a0a87374418635689471606454abc7beaa3a","versionType":"gi…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/affected/0

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/43330a1e8aace6b5a8de9aba127e9e394ab49b0f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/4beffcd726e2a731cea4dc18e1fbc55c8d76f1a0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/ccb9fd4b87538ccf19ccff78ee26700526d94867"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/d4b1301fd3c9e5e105fd3767c68bc4ba558bb228"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:28a568d0259558403408589ce308afe0cfd5497d1fa33d7778db6e81bcb86a18 · sha256:b2e83826612ae2f8… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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