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CVE-2026-23342

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPT_RT On PREEMPT_RT kernels, the per-CPU xdp_bulk_queue (bq) can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bq_enqueue() and __cpu_map_flush() run atomically with respect to each other on the same CPU, relying on local_bh_disable() to prevent preemption. However, on PREEMPT_RT, local_bh_disable() only calls migrate_disable() (when PREEMPT_R
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3f0ae5b2be061582ebe5a5d163f18b0caab6f5374a56841b098892e48f9fc7bc
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":["kernel/bpf/cpumap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7466ae2aeed483de80c5d8dea0913cf74038b652","status":"affected","version":"3253cb49cbad4772389d6ef55be75db1f97da910","versionType":"git"},{"lessThan":"e67299e1044349ad0088d52c6bc5764cc1816c06","status":"affected","version":"3253cb49cbad4772389d6ef55be75db1f97da910","versionType":"git"},{"lessThan":"869c63d5975d55e97f6b168e885452b3da20ea47","status":"affected","version":"3253cb49cbad4772389d6ef55b…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/cpumap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/cpumap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7466ae2aeed483de80c5d8dea0913cf74038b652","status":"affected","version":"3253cb49cbad4772389d6ef55be75db1f97da910","versionType":"git"},{"lessThan":"e67299e1044349ad0088d52c6bc5764cc1816c06","status":"affected","version":"3253cb49cbad4772389d6ef55be75db1f97da910","versionType":"git"},{"lessThan":"869c63d5975d55e97f6b168e885452b3da20ea47","status":"affected","version":"3253cb49cbad4772389d6ef55b…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/cpumap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/affected/1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/7466ae2aeed483de80c5d8dea0913cf74038b652"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/869c63d5975d55e97f6b168e885452b3da20ea47"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/e67299e1044349ad0088d52c6bc5764cc1816c06"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:513fa3db7709c64bf72965d9347991ac907977b0dd8ba8ae72eaeeab7d4f9cbb · sha256:af89e7bf2534004d… · /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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