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CVE-2026-63983

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix packet loop on netem when duplicate is on When netem duplicates a packet it re-enqueues the copy at the root qdisc. If another netem sits in the tree the copy can be duplicated again, recursing until the stack or memory is exhausted. The original duplication guard temporarily zeroed q->duplicate around the re-enqueue, but that does not cover all cases because it is per-qdisc state shared across all concurrent e
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4baf87981955e64165d039e3e6fa68642f9ccb9e1afc7c2dd83f2e8b739ee866
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/sched/sch_netem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_netem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1a298a514ce766c6d0c232991a390fec67af81ad","status":"affected","version":"0afb51e72855971dba83b3c6b70c547c2d1161fd","versionType":"git"},{"lessThan":"cfb2616042767ab31260d4f39190c381bec8b12e","status":"affected","version":"0afb51e72855971dba83b3c6b70c547c2d1161fd","versionType":"git"},{"lessThan":"9552b11e3edabc97cfcd9f29103d5afbce7ae183","status":"affected","version":"0afb51e72855971dba83b3c6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/sch_netem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_netem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1a298a514ce766c6d0c232991a390fec67af81ad","status":"affected","version":"0afb51e72855971dba83b3c6b70c547c2d1161fd","versionType":"git"},{"lessThan":"cfb2616042767ab31260d4f39190c381bec8b12e","status":"affected","version":"0afb51e72855971dba83b3c6b70c547c2d1161fd","versionType":"git"},{"lessThan":"9552b11e3edabc97cfcd9f29103d5afbce7ae183","status":"affected","version":"0afb51e72855971dba83b3c6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/affected/0

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/1a298a514ce766c6d0c232991a390fec67af81ad"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/9552b11e3edabc97cfcd9f29103d5afbce7ae183"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/cfb2616042767ab31260d4f39190c381bec8b12e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d5f5734bb112c88cbd5ace3f96725c1150d2fe50255e8869af0efe9e15d535f0 · sha256:b09413b3f2526338… · /containers/cna/references/1

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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