Crash in __libc_free

Similar reports
Problem #5397
Component
openssh
Last affected version
0:7.4p1-23.el7_9
Executable
/usr/sbin/sshd
Error name
SIGSEGV 11
First occurrence
2026-05-27
Last occurrence
2026-10-19
Unique reports
6
Quality
-23

Statistics

Operating system Unique / Total count
CentOS 7 6 / 731
Operating system Count
CentOS 7 731
Architecture Count
x86_64 731
Related packages Count
glibc 731
 0:2.17-317.el7 731
nss 731
 0:3.44.0-7.el7_7 731
lz4 731
 0:1.8.3-1.el7 731
Show more… (35)
libgcc 731
 0:4.8.5-44.el7 731
libgpg-error 731
 0:1.12-3.el7 731
nss-util 731
 0:3.44.0-4.el7_7 731
dbus-libs 731
 1:1.10.24-15.el7 731
libattr 731
 0:2.4.46-13.el7 731
elfutils-libelf 731
 0:0.176-5.el7 731
keyutils-libs 731
 0:1.5.8-3.el7 731
openldap 731
 0:2.4.44-25.el7_9 731
fipscheck-lib 731
 0:1.4.1-6.el7 731
audit-libs 731
 0:2.8.5-4.el7 731
sssd-client 731
 0:1.16.5-10.el7 731
libgcrypt 731
 0:1.5.3-14.el7 731
bzip2-libs 731
 0:1.0.6-13.el7 731
pam 731
 0:1.1.8-23.el7 731
libselinux 731
 0:2.5-15.el7 731
pcre 731
 0:8.32-17.el7 731
libcap-ng 731
 0:0.7.5-4.el7 731
cyrus-sasl-lib 731
 0:2.1.26-23.el7 470
 0:2.1.26-24.el7_9 261
tcp_wrappers-libs 731
 0:7.6-77.el7 731
libcap 731
 0:2.22-11.el7 731
elfutils-libs 731
 0:0.176-5.el7 731
zlib 731
 0:1.2.7-20.el7_9 731
xz-libs 731
 0:5.2.2-1.el7 731
nss-pam-ldapd 731
 0:0.8.13-25.el7 731
krb5-libs 731
 0:1.15.1-55.el7_9 731
openssh-server 731
 0:7.4p1-23.el7_9 731
cracklib 731
 0:2.9.0-11.el7 731
nspr 731
 0:4.21.0-1.el7 731
openssl-libs 731
 1:1.0.2k-26.el7_9 731
libcom_err 731
 0:1.42.9-19.el7 731
google-authenticator 731
 0:1.04-1.el7 731
systemd-libs 731
 0:219-78.el7 731
nss-softokn-freebl 731
 0:3.44.0-8.el7_7 731
oddjob-mkhomedir 731
 0:0.31.5-4.el7 731
libpwquality 731
 0:1.2.3-5.el7 731

Packages names with count less than the total count of reports are most probably not the cause of the problem.

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Backtrace

Frame # Function Binary Source or offset Line
1
__libc_free
/lib64/libc.so.6 0x85b0c
Build id: f9fafde281e0e0e2af45911ad0fa115b64c2cea8 		-
2
/usr/lib64/security/pam_captcha.so 0x1866
Build id: 70ae051f39761fccbd4838558c5003a1c4ae45d3 		-
3
pam_sm_authenticate
/usr/lib64/security/pam_captcha.so 0x14e8
Build id: 70ae051f39761fccbd4838558c5003a1c4ae45d3 		-
4
_pam_dispatch
/lib64/libpam.so.0 0x2f0a
Build id: d908e2ffa0016fc4601c0de7c07f725c5d4c98d4 		-
5
pam_authenticate
/lib64/libpam.so.0 0x27d0
Build id: d908e2ffa0016fc4601c0de7c07f725c5d4c98d4 		-
6
sshpam_auth_passwd
/usr/sbin/sshd 0x34150
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-
7
auth_password
/usr/sbin/sshd 0x117db
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-
8
mm_answer_authpassword
/usr/sbin/sshd 0x27c52
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-
9
monitor_read
/usr/sbin/sshd 0x2a489
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-
10
monitor_child_preauth
/usr/sbin/sshd 0x2abfc
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-
11
main
/usr/sbin/sshd 0xf2d4
Build id: 9536863bae3cab14d8a02e6e3ef357d82d1388d7 		-