High 7.8Published Feb 23, 2024

CVE-2023-52464EDAC/thunderx: Fix possible out-of-bounds string access

Updated under an hour ago (Oct 27, 2026, 7:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	41003396f932d7f027725c7acebb6a7caa41dc3e builds before 71c17ee02538802ceafc830f0736aa35b564e601; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 6aa7865ba7ff7f0ede0035180fb3b9400ceb405a; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 700cf4bead80fac994dcc43ae1ca5d86d8959b21; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 9dbac9fdae6e3b411fc4c3fca3bf48f70609c398; from 41003396f932d7f027725c7acebb6a7caa41dc3e before e1c86511241588efffaa49556196f09a498d5057; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 426fae93c01dffa379225eb2bd4d3cdc42c6eec5; 41003396f932d7f027725c7acebb6a7caa41dc3e builds before 475c58e1a471e9b873e3e39958c64a2d278275c8	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.12.0 before 4.19.306; from 4.20.0 before 5.4.268; from 5.5.0 before 5.10.209; from 5.11.0 before 5.15.148; from 5.16.0 before 6.1.75; from 6.2.0 before 6.6.14; from 6.7.0 before 6.7.2	NVD

References

References

https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601	patch
https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6	patch
https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a	patch
https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21	patch
https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398	patch
https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057	patch
https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5	patch
https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.