https://cert-portal.siemens.com/productcert/html/ssa-082556.html

[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.5","lessThan":"V3.1.6","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.5","lessThan":"V3.1.6","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.5","lessThan":"V3.1.6","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.5","lessThan":"V3.1.6","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.5","lessThan":"V3.1.6","versionType":"custom","status":"affected"}]}]

{"timestamp":"2026-03-11T15:56:03.349329Z","id":"CVE-2026-3904","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"The GNU C Library","product":"glibc","defaultStatus":"unaffected","platforms":["x86"],"versions":[{"version":"2.35","lessThan":"2.37","versionType":"custom","status":"affected"}]}]

OR
          *cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.35 up to (excluding) 2.37

CVE: http://www.openwall.com/lists/oss-security/2026/03/11/5 Types: Mailing List, Third Party Advisory

GNU C Library: https://sourceware.org/bugzilla/show_bug.cgi?id=29863 Types: Exploit, Issue Tracking, Patch

GNU C Library: https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0004;hb=HEAD Types: Third Party Advisory

GNU C Library: https://sourceware.org/git/?p=glibc.git;a=commit;h=8804157ad9da39631703b92315460808eac86b0c Types: Patch

GNU C Library: https://sourceware.org/git/?p=glibc.git;a=commit;h=b712be52645282c706a5faa038242504feb06db5 Types: Patch

http://www.openwall.com/lists/oss-security/2026/03/11/5

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

Calling NSS-backed functions that support caching via nscd may call the 
nscd client side code and in the GNU C Library version 2.36 under high 
load on x86_64 systems, the client may call memcmp on inputs that are 
concurrently modified by other processes or threads and crash.




The nscd client in the GNU C Library uses the memcmp function with 
inputs that may be concurrently modified by another thread, potentially 
resulting in spurious cache misses, which in itself is not a security 
issue.  However in the GNU C Library version 2.36 an optimized 
implementation of memcmp was introduced for x86_64 which could crash 
when invoked with such undefined behaviour, turning this into a 
potential crash of the nscd client and the application that uses it. 
This implementation was backported to the 2.35 branch, making the nscd 
client in that branch vulnerable as well.  Subsequently, the fix for 
this issue was backported to all vulnerable branches in the GNU C 
Library repository.


It is advised that distributions that may have cherry-picked the memcpy 
SSE2 optimization in their copy of the GNU C Library, also apply the fix 
to avoid the potential crash in the nscd client.

CWE-366

https://sourceware.org/bugzilla/show_bug.cgi?id=29863

https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0004;hb=HEAD

https://sourceware.org/git/?p=glibc.git;a=commit;h=8804157ad9da39631703b92315460808eac86b0c

https://sourceware.org/git/?p=glibc.git;a=commit;h=b712be52645282c706a5faa038242504feb06db5