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
2026-07-08
Unique reports
3
Quality
-23

Statistics

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

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 		-