7.8

CVE-2023-53000

netlink: prevent potential spectre v1 gadgets

In the Linux kernel, the following vulnerability has been resolved:

netlink: prevent potential spectre v1 gadgets

Most netlink attributes are parsed and validated from
__nla_validate_parse() or validate_nla()

    u16 type = nla_type(nla);

    if (type == 0 || type > maxtype) {
        /* error or continue */
    }

@type is then used as an array index and can be used
as a Spectre v1 gadget.

array_index_nospec() can be used to prevent leaking
content of kernel memory to malicious users.

This should take care of vast majority of netlink uses,
but an audit is needed to take care of others where
validation is not yet centralized in core netlink functions.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.15 < 5.4.231
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.166
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.91
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.9
Linux ≫ Linux Kernel Version6.2 Updaterc1
Linux ≫ Linux Kernel Version6.2 Updaterc2
Linux ≫ Linux Kernel Version6.2 Updaterc3
Linux ≫ Linux Kernel Version6.2 Updaterc4
Linux ≫ Linux Kernel Version6.2 Updaterc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.098
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-129 Improper Validation of Array Index

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
Patch
https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
Patch
https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
Patch
https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
Patch
https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455
Patch