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CVE-2026-23067

In the Linux kernel, the following vulnerability has been resolved: iommu/io-pgtable-arm: fix size_t signedness bug in unmap path __arm_lpae_unmap() returns size_t but was returning -ENOENT (negative error code) when encountering an unmapped PTE. Since size_t is unsigned, -ENOENT (typically -2) becomes a huge positive value (0xFFFFFFFFFFFFFFFE on 64-bit systems). This corrupted value propagates through the call chain: __arm_lpae_unmap() returns -ENOENT as size_t -> arm_lpae_unmap_pages()
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b19aab7f2fa914d1947fc9944928706952f9c2db9409dd9aca150a07333ffeb1
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":["drivers/iommu/io-pgtable-arm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/io-pgtable-arm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"41ec6988547819756fb65e94fc24f3e0dddf84ac","status":"affected","version":"3318f7b5cefbff96b1bb49584ac38d2c9997a830","versionType":"git"},{"lessThan":"374e7af67d9d9d6103c2cfc8eb32abfecf3a2fd8","status":"affected","version":"3318f7b5cefbff96b1bb49584ac38d2c9997a830","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/io-pgtable-arm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/io-pgtable-arm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"41ec6988547819756fb65e94fc24f3e0dddf84ac","status":"affected","version":"3318f7b5cefbff96b1bb49584ac38d2c9997a830","versionType":"git"},{"lessThan":"374e7af67d9d9d6103c2cfc8eb32abfecf3a2fd8","status":"affected","version":"3318f7b5cefbff96b1bb49584ac38d2c9997a830","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/374e7af67d9d9d6103c2cfc8eb32abfecf3a2fd8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/41ec6988547819756fb65e94fc24f3e0dddf84ac"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dc36ffca7e52cfb6b58b50bc1c653172923c4f70ad2556716d96c38990273dc7 · sha256:e7f93d8702444d26… · /containers/cna/references/0

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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