Crash in __libc_free

Similar reports
Problem #5397
Component
openssh
Last affected version
0:7.4p1-21.el7
Executable
/usr/sbin/sshd
Error name
SIGSEGV 11
First occurrence
2022-11-04
Last occurrence
2025-07-28
Unique reports
33
Quality
-23

Statistics

Operating system Unique / Total count
CentOS 7 33 / 25,306
Operating system Count
CentOS 7 25,306
Architecture Count
x86_64 25,306
Related packages Count
nss-softokn-freebl 25,306
 0:3.44.0-8.el7_7 24,854
 0:3.90.0-6.el7_9 452
bzip2-libs 25,306
 0:1.0.6-13.el7 25,306
nspr 25,306
 0:4.21.0-1.el7 24,854
 0:4.35.0-1.el7_9 452
Show more… (34)
libattr 25,306
 0:2.4.46-13.el7 25,306
openssl-libs 25,306
 1:1.0.2k-21.el7_9 21,484
 1:1.0.2k-26.el7_9 3,416
 1:1.0.2k-25.el7_9 406
elfutils-libelf 25,306
 0:0.176-5.el7 25,306
libgpg-error 25,306
 0:1.12-3.el7 25,306
libcom_err 25,306
 0:1.42.9-19.el7 25,306
nss 25,306
 0:3.44.0-7.el7_7 24,854
 0:3.90.0-2.el7_9 452
cracklib 25,306
 0:2.9.0-11.el7 25,306
audit-libs 25,306
 0:2.8.5-4.el7 25,306
libcap-ng 25,306
 0:0.7.5-4.el7 25,306
krb5-libs 25,306
 0:1.15.1-50.el7 23,119
 0:1.15.1-55.el7_9 2,187
pcre 25,306
 0:8.32-17.el7 25,306
dbus-libs 25,306
 1:1.10.24-15.el7 25,306
nss-util 25,306
 0:3.44.0-4.el7_7 24,854
 0:3.90.0-1.el7_9 452
cyrus-sasl-lib 25,306
 0:2.1.26-23.el7 24,548
 0:2.1.26-24.el7_9 758
lz4 25,306
 0:1.8.3-1.el7 25,306
libcap 25,306
 0:2.22-11.el7 25,306
keyutils-libs 25,306
 0:1.5.8-3.el7 25,306
libgcc 25,306
 0:4.8.5-44.el7 25,306
openldap 25,306
 0:2.4.44-25.el7_9 25,306
nss-pam-ldapd 25,306
 0:0.8.13-25.el7 25,306
libselinux 25,306
 0:2.5-15.el7 25,306
libgcrypt 25,306
 0:1.5.3-14.el7 25,306
tcp_wrappers-libs 25,306
 0:7.6-77.el7 25,306
glibc 25,306
 0:2.17-317.el7 25,306
fipscheck-lib 25,306
 0:1.4.1-6.el7 25,306
openssh-server 25,306
 0:7.4p1-21.el7 25,306
pam 25,306
 0:1.1.8-23.el7 25,306
zlib 25,306
 0:1.2.7-19.el7_9 17,568
 0:1.2.7-20.el7_9 7,738
libpwquality 25,306
 0:1.2.3-5.el7 25,306
oddjob-mkhomedir 25,306
 0:0.31.5-4.el7 25,306
systemd-libs 25,306
 0:219-78.el7 25,306
xz-libs 25,306
 0:5.2.2-1.el7 25,306
elfutils-libs 25,306
 0:0.176-5.el7 25,306
sssd-client 17,218
 0:1.16.5-10.el7 17,218

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 0x340f0
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-
7
auth_password
/usr/sbin/sshd 0x117db
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-
8
mm_answer_authpassword
/usr/sbin/sshd 0x27c02
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-
9
monitor_read
/usr/sbin/sshd 0x2a439
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-
10
monitor_child_preauth
/usr/sbin/sshd 0x2abac
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-
11
main
/usr/sbin/sshd 0xf2d4
Build id: 8c47df62cc2fa54e102a6419f361641496c1fa04 		-