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CVE-2026-52945

In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enable threaded NAPI" This reverts commit 933466fc50a8e4eb167acbd0d8ec96a078462e9c which is commit db9ae3b6b43c79b1ba87eea849fd65efa05b4b2e upstream. We have had three independent production user reports in combination with Cilium utilizing WireGuard as encryption underneath that k8s Pod E/W traffic to certain peer nodes fully stalled. The situation appears as follows: - Occurs very rarely but at
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1b7205a19e4ba6559e25f2a951ac2d7afb87d9a2a4999b15e3769a00117e4ce4
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":"unaffected","product":"Linux","programFiles":["drivers/net/wireguard/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5.15.201","status":"affected","version":"5.15.186","versionType":"semver"},{"lessThan":"6.1.164","status":"affected","version":"6.1.142","versionType":"semver"},{"lessThan":"6.6.127","status":"affected","version":"6.6.94","versionType":"semver"},{"lessThan":"6.12.74","status":"affected","version":"6.12.34","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireguard/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cfdb22762f903d95c36ab91e9fe6167f22fa9f6d","status":"affected","version":"18e65229a328304a7ef59899a30fd34ad73ed56b","versionType":"git"},{"lessThan":"42bc3f45425b607a5ca7b7aaaab661b54407c8f8","status":"affected","version":"fb978675ccfd4a93549e49624127d8332cc61cbf","versionType":"git"},{"lessThan":"168ee1549fa24fff2ab924a2ca7b1d85f30e062d","status":"affected","version":"8c9e9cd398777fd…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireguard/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5.15.201","status":"affected","version":"5.15.186","versionType":"semver"},{"lessThan":"6.1.164","status":"affected","version":"6.1.142","versionType":"semver"},{"lessThan":"6.6.127","status":"affected","version":"6.6.94","versionType":"semver"},{"lessThan":"6.12.74","status":"affected","version":"6.12.34","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireguard/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cfdb22762f903d95c36ab91e9fe6167f22fa9f6d","status":"affected","version":"18e65229a328304a7ef59899a30fd34ad73ed56b","versionType":"git"},{"lessThan":"42bc3f45425b607a5ca7b7aaaab661b54407c8f8","status":"affected","version":"fb978675ccfd4a93549e49624127d8332cc61cbf","versionType":"git"},{"lessThan":"168ee1549fa24fff2ab924a2ca7b1d85f30e062d","status":"affected","version":"8c9e9cd398777fd…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/168ee1549fa24fff2ab924a2ca7b1d85f30e062d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/42bc3f45425b607a5ca7b7aaaab661b54407c8f8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/cfdb22762f903d95c36ab91e9fe6167f22fa9f6d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/e94b369ff82f9bc84f090f271bd78f41c9f6ab2f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0bc9ca32d8b3d3b949a55d4ebfc0eb9e367ab3f7af43f48728365a297ab1bf0f · sha256:33a1372436228db6… · /containers/cna/references/3

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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