CVE-2023-52746: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr() int type = nla_type(nla); if (type > XFRMA_MAX) { return -EOPNOTSUPP; } @type is then used as an array index and can be used as a Spectre v1 gadget. if (nla_len(nla) < compat_policy[type].len) { array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users.

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CVSS v3.1 Score

2.5

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.10 — 5.10.168
linux	linux_kernel	5.11 — 5.15.94
linux	linux_kernel	5.16 — 6.1.12
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/419674224390fca298020fc0751a20812f84b12d https://git.kernel.org/stable/c/5dc688fae6b7be9dbbf5304a3d2520d038e06db5 https://git.kernel.org/stable/c/a893cc644812728e86e9aff517fd5698812ecef0 https://git.kernel.org/stable/c/b6ee896385380aa621102e8ea402ba12db1cabff https://git.kernel.org/stable/c/419674224390fca298020fc0751a20812f84b12d https://git.kernel.org/stable/c/5dc688fae6b7be9dbbf5304a3d2520d038e06db5 https://git.kernel.org/stable/c/a893cc644812728e86e9aff517fd5698812ecef0 https://git.kernel.org/stable/c/b6ee896385380aa621102e8ea402ba12db1cabff

Frequently Asked Questions

What is CVE-2023-52746? +

In the Linux kernel, the following vulnerability has been resolved: xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr() int type = nla_type(nla); if (type > XFRMA_MAX) { return -EOPNOTSUPP; } @type is then used as an array index and can be used as a Spectre v1 gadget. if (nla_len(nla) < compat_policy[type].len) { array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. It has a CVSS v3.1 base score of 2.5 (LOW).

How severe is CVE-2023-52746? +

CVE-2023-52746 has a CVSS v3.1 score of 2.5 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2023-52746? +

CVE-2023-52746 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52746? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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