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
2026-08-07
Unique reports
4
Quality
-23

Statistics

Operating system Unique / Total count
CentOS 7 4 / 619
Operating system Count
CentOS 7 619
Architecture Count
x86_64 619
Related packages Count
bzip2-libs 619
 0:1.0.6-13.el7 619
fipscheck-lib 619
 0:1.4.1-6.el7 619
elfutils-libelf 619
 0:0.176-5.el7 619
Show more… (35)
xz-libs 619
 0:5.2.2-1.el7 619
libselinux 619
 0:2.5-15.el7 619
libcap 619
 0:2.22-11.el7 619
libcap-ng 619
 0:0.7.5-4.el7 619
libcom_err 619
 0:1.42.9-19.el7 619
lz4 619
 0:1.8.3-1.el7 619
cyrus-sasl-lib 619
 0:2.1.26-23.el7 400
 0:2.1.26-24.el7_9 219
glibc 619
 0:2.17-317.el7 619
nspr 619
 0:4.21.0-1.el7 619
libgcc 619
 0:4.8.5-44.el7 619
tcp_wrappers-libs 619
 0:7.6-77.el7 619
libattr 619
 0:2.4.46-13.el7 619
libgcrypt 619
 0:1.5.3-14.el7 619
nss-softokn-freebl 619
 0:3.44.0-8.el7_7 619
nss 619
 0:3.44.0-7.el7_7 619
nss-pam-ldapd 619
 0:0.8.13-25.el7 619
nss-util 619
 0:3.44.0-4.el7_7 619
zlib 619
 0:1.2.7-20.el7_9 619
systemd-libs 619
 0:219-78.el7 619
keyutils-libs 619
 0:1.5.8-3.el7 619
libpwquality 619
 0:1.2.3-5.el7 619
krb5-libs 619
 0:1.15.1-55.el7_9 619
google-authenticator 619
 0:1.04-1.el7 619
pam 619
 0:1.1.8-23.el7 619
sssd-client 619
 0:1.16.5-10.el7 619
openssl-libs 619
 1:1.0.2k-26.el7_9 619
cracklib 619
 0:2.9.0-11.el7 619
openssh-server 619
 0:7.4p1-23.el7_9 619
oddjob-mkhomedir 619
 0:0.31.5-4.el7 619
elfutils-libs 619
 0:0.176-5.el7 619
openldap 619
 0:2.4.44-25.el7_9 619
libgpg-error 619
 0:1.12-3.el7 619
pcre 619
 0:8.32-17.el7 619
dbus-libs 619
 1:1.10.24-15.el7 619
audit-libs 619
 0:2.8.5-4.el7 619

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 		-