7.8

CVE-2022-49044

dm integrity: fix memory corruption when tag_size is less than digest size

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.12 < 4.19.240
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.190
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.112
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.35
Linux ≫ Linux Kernel Version >= 5.16 < 5.17.4
Linux ≫ Linux Kernel Version5.18 Updaterc1
Linux ≫ Linux Kernel Version5.18 Updaterc2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.183
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/08c1af8f1c13bbf210f1760132f4df24d0ed46d6
Patch
https://git.kernel.org/stable/c/4d485cf9b609709e45d5113e6e2b1b01254b2fe9
Patch
https://git.kernel.org/stable/c/6a95d91c0b315c965198f6ab7dec7c94129e17e0
Patch
https://git.kernel.org/stable/c/6b4bf97587ef6c1927a78934b700204920655123
Patch
https://git.kernel.org/stable/c/7f84c937222944c03f4615ca4742df6bed0e5adf
Patch
https://git.kernel.org/stable/c/cd02b2687d66f0a8e716384de4b9a0671331f1dc
Patch