wiredtiger fails to build from source in noble due to the test coredump

[Vladimir Petko]

The package does not build in noble due to the following error:
---------
make[4]: Entering directory '/<<PKGBUILDDIR>>/examples/c'
PASS: ex_config_parse
PASS: ex_file_system
PASS: ex_smoke
PASS: ex_event_handler
PASS: ex_pack
PASS: ex_data_source
PASS: ex_hello
PASS: ex_extending
PASS: ex_process
../../build_posix/gnu-support/test-driver: line 112: 659152 Aborted (core dumped) "$@" >> "$log_file" 2>&1
FAIL: ex_async
PASS: ex_thread
PASS: ex_access
PASS: ex_stat
PASS: ex_sync
PASS: ex_cursor
PASS: ex_extractor
PASS: ex_call_center
PASS: ex_schema
PASS: ex_encrypt
PASS: ex_log
PASS: ex_all

-----------

See [1]

[1] https://launchpadlibrarian.net/715418533/buildlog_ubuntu-noble-amd64.wiredtiger_3.2.1-1ubuntu1_BUILDING.txt.gz

[Pushkar Kulkarni (pushkarnk)]

Seen in examples/c/test-suite.log:

FAIL: ex_async
==============

*** buffer overflow detected ***: terminated
FAIL ex_async (exit status: 134)

[Pushkar Kulkarni (pushkarnk)]

The problem lies in the snprintf() calls within the loop [1][2][3]:

-----

(void)snprintf(k[i], sizeof(k), "key%d", i);

-----

Variable k is defined as:

-----

char k[15][16]

-----

sizeof(k) is hence 15*16 = 240. This works for snprintf(k[0]...) only. For larger indices, a buffer overflow will result.

[1] https://git.launchpad.net/ubuntu/+source/wiredtiger/tree/examples/c/ex_async.c#n146
[2] https://git.launchpad.net/ubuntu/+source/wiredtiger/tree/examples/c/ex_async.c#n151
[3] https://git.launchpad.net/ubuntu/+source/wiredtiger/tree/examples/c/ex_async.c#n191

[Lukas Märdian (slyon)]

This code was dropped upstream: https://github.com/wiredtiger/wiredtiger/pull/6026

[Launchpad Janitor (janitor)]

This bug was fixed in the package wiredtiger - 3.2.1-1ubuntu4

---------------
wiredtiger (3.2.1-1ubuntu4) oracular; urgency=medium

  * No-change rebuild, to fix version number (dropping "ppa1" suffix)

wiredtiger (3.2.1-1ubuntu3ppa1) oracular; urgency=medium

  * d/p/fix_buffer_overflow.patch: Fix buffer overflows
    in example/c/ex_async.c (LP: #2056102)

 -- Pushkar Kulkarni <email address hidden> Tue, 16 Jul 2024 16:31:41 +0200