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CVE-2026-53032

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL deref in map_kptr_match_type for scalar regs Commit ab6c637ad027 ("bpf: Fix a bpf_kptr_xchg() issue with local kptr") refactored map_kptr_match_type() to branch on btf_is_kernel() before checking base_type(). A scalar register stored into a kptr slot has no btf, so the btf_is_kernel(reg->btf) call dereferences NULL. Move the base_type() != PTR_TO_BTF_ID guard before any reg->btf access.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e64633a0421582f3ecb6994183a72016b6ff095336fd3fab60401343ac5ece07
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":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrE…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"520454e839710c327808c2fcc98e28cee77355fc","status":"affected","version":"ab6c637ad0276e42f8acabcbc64932a6d346dab3","versionType":"git"},{"lessThan":"0a36c1f72888bca0237295a4da19cd91821a90be","status":"affected","version":"ab6c637ad0276e42f8acabcbc64932a6d346dab3","versionType":"git"},{"lessThan":"6982653ce5f119982aa58f1af58e7bfbebf39252","status":"affected","version":"ab6c637ad0276e42f8acabcb…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrE…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"520454e839710c327808c2fcc98e28cee77355fc","status":"affected","version":"ab6c637ad0276e42f8acabcbc64932a6d346dab3","versionType":"git"},{"lessThan":"0a36c1f72888bca0237295a4da19cd91821a90be","status":"affected","version":"ab6c637ad0276e42f8acabcbc64932a6d346dab3","versionType":"git"},{"lessThan":"6982653ce5f119982aa58f1af58e7bfbebf39252","status":"affected","version":"ab6c637ad0276e42f8acabcb…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/affected/0

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/0a36c1f72888bca0237295a4da19cd91821a90be"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/4d0a375887ab4d49e4da1ff10f9606cab8f7c3ad"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/520454e839710c327808c2fcc98e28cee77355fc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/6982653ce5f119982aa58f1af58e7bfbebf39252"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/da1d615ce49a47986a8864e2371a26e97861085c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:21c27abf0ce4ff6b1fec9a90d8b8a7825246163be379bdbc27dacb424a886f61 · sha256:53f1996a8a0abddc… · /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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