CVE-2025-68726 (GCVE-0-2025-68726)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2025-12-24 10:33
VLAI?
Title
crypto: aead - Fix reqsize handling
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: aead - Fix reqsize handling Commit afddce13ce81d ("crypto: api - Add reqsize to crypto_alg") introduced cra_reqsize field in crypto_alg struct to replace type specific reqsize fields. It looks like this was introduced specifically for ahash and acomp from the commit description as subsequent commits add necessary changes in these alg frameworks. However, this is being recommended for use in all crypto algs instead of setting reqsize using crypto_*_set_reqsize(). Using cra_reqsize in aead algorithms, hence, causes memory corruptions and crashes as the underlying functions in the algorithm framework have not been updated to set the reqsize properly from cra_reqsize. [1] Add proper set_reqsize calls in the aead init function to properly initialize reqsize for these algorithms in the framework. [1]: https://gist.github.com/Pratham-T/24247446f1faf4b7843e4014d5089f6b
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: afddce13ce81d52a13898fa0700917835c71acd6 , < 64377e66e187164bd6737112d07257f5f0feb681 (git)
Affected: afddce13ce81d52a13898fa0700917835c71acd6 , < 12b413f5460c393d1151a37f591140693eca0f84 (git)
Affected: afddce13ce81d52a13898fa0700917835c71acd6 , < 9b04d8f00569573796dd05397f5779135593eb24 (git)
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    Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: aead - Fix reqsize handling\n\nCommit afddce13ce81d (\"crypto: api - Add reqsize to crypto_alg\")\nintroduced cra_reqsize field in crypto_alg struct to replace type\nspecific reqsize fields. It looks like this was introduced specifically\nfor ahash and acomp from the commit description as subsequent commits\nadd necessary changes in these alg frameworks.\n\nHowever, this is being recommended for use in all crypto algs\ninstead of setting reqsize using crypto_*_set_reqsize(). Using\ncra_reqsize in aead algorithms, hence, causes memory corruptions and\ncrashes as the underlying functions in the algorithm framework have not\nbeen updated to set the reqsize properly from cra_reqsize. [1]\n\nAdd proper set_reqsize calls in the aead init function to properly\ninitialize reqsize for these algorithms in the framework.\n\n[1]: https://gist.github.com/Pratham-T/24247446f1faf4b7843e4014d5089f6b"
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