CVE-2023-53000

Description

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.

Reserved 2025-03-27 | Published 2025-03-27 | Updated 2025-05-04 | Assigner Linux

Product status

Default status
unaffected

bfa83a9e03cf8d501c6272999843470afecb32ed before 3e5082b1c66c7783fbcd79b5b178573230e528ff
affected

bfa83a9e03cf8d501c6272999843470afecb32ed before 539ca5dcbc91134bbe2c45677811c31d8b030d2d
affected

bfa83a9e03cf8d501c6272999843470afecb32ed before 41b74e95f297ac360ca7ed6bf200100717cb6c45
affected

bfa83a9e03cf8d501c6272999843470afecb32ed before 992e4ff7116a77968039277b5d6aaa535c2f2184
affected

bfa83a9e03cf8d501c6272999843470afecb32ed before f0950402e8c76e7dcb08563f1b4e8000fbc62455
affected

Default status
affected

2.6.15
affected

Any version before 2.6.15
unaffected

5.4.231
unaffected

5.10.166
unaffected

5.15.91
unaffected

6.1.9
unaffected

6.2
unaffected

References

git.kernel.org/...c/3e5082b1c66c7783fbcd79b5b178573230e528ff

git.kernel.org/...c/539ca5dcbc91134bbe2c45677811c31d8b030d2d

git.kernel.org/...c/41b74e95f297ac360ca7ed6bf200100717cb6c45

git.kernel.org/...c/992e4ff7116a77968039277b5d6aaa535c2f2184

git.kernel.org/...c/f0950402e8c76e7dcb08563f1b4e8000fbc62455

cve.org (CVE-2023-53000)

nvd.nist.gov (CVE-2023-53000)

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