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CVE-2026-45927

In the Linux kernel, the following vulnerability has been resolved: bpf: Require frozen map for calculating map hash Currently, bpf_map_get_info_by_fd calculates and caches the hash of the map regardless of the map's frozen state. This leads to a TOCTOU bug where userspace can call BPF_OBJ_GET_INFO_BY_FD to cache the hash and then modify the map contents before freezing. Therefore, a trusted loader can be tricked into verifying the stale hash while loading the modified contents. Fix this by
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:939dc78401d88d66fc881f7dc5f4e18e800aab0868327de74c4156b43cb171f4
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/syscall.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":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/syscall.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7752d36343862323bbeea4ce3adf0ec2ed86e122","status":"affected","version":"ea2e6467ac36bf3d785defc89e58269b15d182f7","versionType":"git"},{"lessThan":"f415e114b58fe02c41191e47f24bdabb438daf72","status":"affected","version":"ea2e6467ac36bf3d785defc89e58269b15d182f7","versionType":"git"},{"lessThan":"a2c86aa621c22f2a7e26c654f936d65cfff0aa91","status":"affected","version":"ea2e6467ac36bf3d785defc89…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/syscall.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":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/syscall.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7752d36343862323bbeea4ce3adf0ec2ed86e122","status":"affected","version":"ea2e6467ac36bf3d785defc89e58269b15d182f7","versionType":"git"},{"lessThan":"f415e114b58fe02c41191e47f24bdabb438daf72","status":"affected","version":"ea2e6467ac36bf3d785defc89e58269b15d182f7","versionType":"git"},{"lessThan":"a2c86aa621c22f2a7e26c654f936d65cfff0aa91","status":"affected","version":"ea2e6467ac36bf3d785defc89…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/affected/0

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/7752d36343862323bbeea4ce3adf0ec2ed86e122"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/a2c86aa621c22f2a7e26c654f936d65cfff0aa91"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f415e114b58fe02c41191e47f24bdabb438daf72"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8f18140e37253268c01bc8e2fba7e22c220e418cb50ad4369838955adcf8e57e · sha256:3f63cd2664f7e816… · /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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