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Vulnerability record · CVE-2023-52746 · published 21 May 2024

CVE-2023-52746: Linux kernel memory leak vulnerability

Linux · Linux Kernel

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.

2.5 CVSS 3.1 Low EPSS 0.24% · top 86.1% CWE-401 · Memory leak
2.5CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2023-52746), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.