app_verify: Double free or memory corruption

[InterLinked1]

Backtrace from some system, running Asterisk 18.13.0, built 2022-07-30:

#1  0x00007fcaaa494537 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x7fca81bae118, sa_sigaction = 0x7fca81bae118}, sa_mask = {__val = {13961818710507735296, 140508110961184, 140507736629632, 140508110954439, 139>
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fcaaa4ec3a8 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fcaaa60a390 "%sn") at ../sysdeps/posix/libc_fatal.c:155
        ap = {{gp_offset = 24, fp_offset = 4294967295, overflow_arg_area = 0x7fca81bae2b0, reg_save_area = 0x7fca81bae240}}
        fd = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
#3  0x00007fcaaa4f369a in malloc_printerr (str=str@entry=0x7fcaaa60c6b0 "free(): double free detected in tcache 2") at malloc.c:5347
#4  0x00007fcaaa4f4c95 in _int_free (av=0x7fca98000020, p=0x7fca980a9da0, have_lock=0) at malloc.c:4201
        tmp = <optimized out>
        e = 0x7fca980a9db0
        tc_idx = 32
        size = 544
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        __PRETTY_FUNCTION__ = "_int_free"
#5  0x00007fca8821ac02 in verify_exec (chan=0x55899e4a28a0, data=<optimized out>) at app_verify.c:1549
        v = <optimized out>
        vresult = <optimized out>
        argstr = <optimized out>
        callerid = 0x55899e4ae3a0 "REDACTED"
        strbuf = 0x7fca980a9db0
        blacklisted = 0
        success = <optimized out>
        curl = <optimized out>
        method = <optimized out>
        extendtrust = <optimized out>
        allowtoken = <optimized out>
        sanitychecks = <optimized out>
        threshold = <optimized out>
        blacklist_failopen = <optimized out>
        name = "pstn-us", '000' <repeats 72 times>
        verifyrequest = '000' <repeats 4095 times>
        verifycontext = "pstn-us-verify-patterns", '000' <repeats 56 times>
        local_var = "__clidverif", '000' <repeats 68 times>
        stirshaken_var = "__ssverstat", '000' <repeats 68 times>
        remote_stirshaken_var = '000' <repeats 79 times>
        remote_var = '000' <repeats 79 times>
        via_remote_var = '000' <repeats 79 times>
        token_remote_var = '000' <repeats 79 times>
        validatetokenrequest = '000' <repeats 4095 times>
        code_good = '000' <repeats 4095 times>
        code_fail = "32", '000' <repeats 4093 times>
        code_spoof = '000' <repeats 4095 times>
        exceptioncontext = '000' <repeats 848 times>...
        setinvars = '000' <repeats 3504 times>...
        failgroup = "spam", '000' <repeats 3500 times>...
        failureaction = '000' <repeats 1088 times>...
        failurefile = '000' <repeats 3592 times>...
        failurelocation = "000000000000000000000000p002t230312177", '000' <repeats 130 times>, "210000000000000000000000윋213312177000000000000000000000000000000370X217213312177000000026000000000>
        successregex = "[0-9]0000000203234273201312177000000360000177252312177000000000241273201312177", '000' <repeats 42 times>, " 000000000060000000000Т273201312177000000000242273201312177", '>
        blacklist_endpoint = "REDACTED", '000' <repeats 3900 times>...
        loglevel = '000' <repeats 79 times>
        logmsg = "000ER(0-9,${EXTEN:-10})}&cnam=${cnamencoded})", '000' <repeats 1269 times>...
        blacklist_threshold = <optimized out>
        args = {argc = 1, {argv = {0x7fca81bae360 "pstn-us", 0x0}, {profile = 0x7fca81bae360 "pstn-us", against = 0x0}}}
        __FUNCTION__ = "verify_exec"
        __PRETTY_FUNCTION__ = "verify_exec"
#6  0x000055899cf60848 in pbx_exec (c=c@entry=0x55899e4a28a0, app=app@entry=0x55899ddf20d0, data=data@entry=0x7fca81bbec30 "pstn-us") at pbx_app.c:492