CVE-2022-49044 (GCVE-0-2022-49044)
Vulnerability from cvelistv5
Published
2025-02-26 01:54
Modified
2025-05-04 08:28
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm integrity: fix memory corruption when tag_size is less than digest size
It is possible to set up dm-integrity in such a way that the
"tag_size" parameter is less than the actual digest size. In this
situation, a part of the digest beyond tag_size is ignored.
In this case, dm-integrity would write beyond the end of the
ic->recalc_tags array and corrupt memory. The corruption happened in
integrity_recalc->integrity_sector_checksum->crypto_shash_final.
Fix this corruption by increasing the tags array so that it has enough
padding at the end to accomodate the loop in integrity_recalc() being
able to write a full digest size for the last member of the tags
array.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 Version: 7eada909bfd7ac90a4522e56aa3179d1fd68cd14 |
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|
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{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm integrity: fix memory corruption when tag_size is less than digest size\n\nIt is possible to set up dm-integrity in such a way that the\n\"tag_size\" parameter is less than the actual digest size. In this\nsituation, a part of the digest beyond tag_size is ignored.\n\nIn this case, dm-integrity would write beyond the end of the\nic-\u003erecalc_tags array and corrupt memory. The corruption happened in\nintegrity_recalc-\u003eintegrity_sector_checksum-\u003ecrypto_shash_final.\n\nFix this corruption by increasing the tags array so that it has enough\npadding at the end to accomodate the loop in integrity_recalc() being\nable to write a full digest size for the last member of the tags\narray."
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"url": "https://git.kernel.org/stable/c/08c1af8f1c13bbf210f1760132f4df24d0ed46d6"
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"datePublished": "2025-02-26T01:54:21.389Z",
"dateReserved": "2025-02-26T01:49:39.241Z",
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