cve-2020-29573
Vulnerability from cvelistv5
Published
2020-12-05 23:18
Modified
2024-08-04 16:55
Severity ?
Summary
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference.
References
cve@mitre.orghttps://security.gentoo.org/glsa/202101-20Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210122-0004/Third Party Advisory
cve@mitre.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=26649Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://sourceware.org/pipermail/libc-alpha/2020-September/117779.htmlPatch, Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

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