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Bug
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Resolution: Done-Errata
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Minor
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rhel-8.8.0
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None
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glibc-2.28-243.el8
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None
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Moderate
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rhel-sst-pt-libraries
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ssg_platform_tools
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13
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15
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1
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Yes
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Red Hat Enterprise Linux
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None
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Pass
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None
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Bug Fix
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Done
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x86_64
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None
What were you trying to do that didn't work?
A customer could not update his system because when updating packages, postinstallation scripts executing ldconfig internally were failing, due to ldconfig crashing while rebuilding its cache.
It appears that a library file was truncated on the file system, the library still had the "transient" name "libnftables.so.1.0.0;<someid>" as unpacked by cpio.
IMHO ldconfig should be robust to never crash.
Please provide the package NVR for which bug is seen:
glibc-2.28-225.el8.x86_64
How reproducible:
Always
Steps to reproduce
- Copy /usr/lib64/libnftables.so.1.0.0 at release nftables-0.9.3-26.el8.x86_64 then truncate the file
# cp /usr/lib64/libnftables.so.1.0.0 /tmp # truncate -s 163840 /tmp/libnftables.so.1.0.0
- Execute ldconfig
# gdb --args ldconfig -n /tmp (gdb) run
Expected results
No crash
Actual results
Program received signal SIGSEGV, Segmentation fault.
process_elf64_file (lib=<optimized out>, file_length=163840, file_contents=0x7ffff7fc9000, soname=0x7fffffffde78,
osversion=0x7fffffffde74, flag=0x7fffffffde70, file_name=0x7fffffffce00 "/tmp/libnftables.so.1.0.0")
at ../elf/readelflib.c:140
140 while (abi_note [0] != 4 || abi_note [1] != 16
(gdb) bt
#0 process_elf64_file (lib=<optimized out>, file_length=163840, file_contents=0x7ffff7fc9000,
soname=0x7fffffffde78, osversion=0x7fffffffde74, flag=0x7fffffffde70,
file_name=0x7fffffffce00 "/tmp/libnftables.so.1.0.0") at ../elf/readelflib.c:140
#1 process_elf64_file (file_name=0x7fffffffce00 "/tmp/libnftables.so.1.0.0", lib=<optimized out>,
flag=0x7fffffffde70, osversion=0x7fffffffde74, soname=0x7fffffffde78, file_contents=0x7ffff7fc9000,
file_length=163840) at ../elf/readelflib.c:42
#2 0x00007ffff7d2884e in process_elf_file (file_name=file_name@entry=0x7fffffffce00 "/tmp/libnftables.so.1.0.0",
lib=lib@entry=0x7ffff8011023 "libnftables.so.1.0.0", flag=flag@entry=0x7fffffffde70,
osversion=osversion@entry=0x7fffffffde74, soname=soname@entry=0x7fffffffde78,
file_contents=file_contents@entry=0x7ffff7fc9000, file_length=163840)
at ../sysdeps/unix/sysv/linux/i386/readelflib.c:74
#3 0x00007ffff7d28c30 in process_file (real_file_name=<optimized out>,
file_name=0x7fffffffce00 "/tmp/libnftables.so.1.0.0", lib=0x7ffff8011023 "libnftables.so.1.0.0",
flag=0x7fffffffde70, osversion=0x7fffffffde74, soname=0x7fffffffde78, is_link=0, stat_buf=0x7fffffffde80)
at readlib.c:176
#4 0x00007ffff7d24215 in search_dir (entry=<optimized out>) at ldconfig.c:985
#5 0x00007ffff7d22ad8 in search_dirs () at ldconfig.c:1176
#6 main (argc=<optimized out>, argv=0x7fffffffe1c8) at ldconfig.c:1485
- is cloned by
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- Closed
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- links to
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RHBA-2023:122573
glibc bug fix and enhancement update
- mentioned on
