The bound added in CVE-2026-32316 (e47e56d22) still allowed
`sizeof(jvp_string) + (currlen + len) * 2 + 1` to wrap `size_t` on
32-bit platforms. Tighten the threshold so the final allocation
fits in 32-bit `size_t`.
Also break out of `jv_string_implode` and `f_string_implode` once
`jv_string_append_codepoint` returns an invalid `jv`; otherwise the
next iteration triggers the assertion in `jvp_string_ptr` (or
invokes undefined behavior under `-DNDEBUG`).
Fixes CVE-2026-54679.
Co-authored-by: Dirk Müller <dirk@dmllr.de>
The table was declared with 255 entries but indexed by an unsigned
char, so the decoder would read one byte past the array for input
bytes equal to 0xFF. Through jq's normal input paths the over-read
is unreachable because invalid UTF-8 bytes are normalized to U+FFFD
before reaching @base64d, but the table is still wrong at the C
level and reachable by libjq callers that construct strings via
the C API without UTF-8 validation.
jv_equal and jv_cmp overflows the C stack on deeply nested
input. Cap recursion at 10000 with -1 / INT_MIN sentinels;
operators that compose user expressions surface this as
"Equality check too deep" / "Comparison too deep".
Fixes CVE-2026-47770.
I love jq :) So while updating the version we ship in Solaris I have
tried to modify stuff to make everything work out of the box. Just
```
autoreconf -fiv
./configure
gmake
gmake check
```
I also went ahead and created Solaris test action should you be
interested in having it too. The changes are not extensive and I have
tried to comment them nicely in each commit. Hopefully that's enough.
Thanks for jq!
This commit improves performance by refactoring `@uri` and `@urid`
to pre-alloacte buffers and build the `jv` string at the end.
Also, this fixes `@urid` to prevent multi-byte UTF-8 corruption,
and to preserve embedded null bytes.
Using `calloc` function with a count of zero elements is implementation
defined and it may cause allocation errors on some platforms (ref #3277).
This commit fixes `jv_mem_calloc` callers to avoid undefined behavior.
When we use a large format string to `strftime/1` and `strflocaltime/1`,
we get segmentation fault. This happens because the result buffer is
allocated on the stack using `alloca` function, and `strftime` function
writes out of the space when the size is not enough to format time.
I fixed the segmentation fault issue by allocating the result buffer on
the heap using `malloc` function, because `alloca` function does not
provide a way to detect insufficient space.
This commit improves the performance of repeating strings, by copying
the result string instead of the string being repeated. Also it adds
an error message when the result string is too long.
On OpenBSD, some prototypes are hidden behind `_BSD_SOURCE`.
Defining this variable fixes#3252, and also fixes#3276.
This can be seen as a regression of #2631.
Previously, `unique` and `unique_by` filters are implemented using
`group_by` and then `map(.[0])`. This commit re-implements in C, to
avoid unnecessary boxing of grouping, and improves the performance.
The `jv2tm` function was zeroing fields of `struct tm` that were not
specified by the standard. However, depending on the libc this produced
incorrect timezone data when used together with formatting functions.
This change tries to fill the timezone data using either `mktime`,
`timegm`, or manually.
Apple's Libc implementation contains a bug which causes it to ignore
the offset data present in the `struct tm` in favor of the older heuristic
needed by legacy standards. This workaround temporarily sets the global
timezone so it gets picked up during formatting.
In C23 (default C standard used by GCC 15), jv (*fptr)(); has become
equivalent to jv (*fptr)(void); so we can no longer assign builtin
implemenations directly to the fptr member of cfunctions without
generating a compile error.
Since there does not seem to be any straight-forward way to tell
autoconf to force the compiler to use C99 short of explicitly adding
-std=c99 to CFLAGS, it is probably a cleaner solution to just make the
code C23 compatible.
A possible solution could have been to just redeclare cfunction.fptr
as void*, but then the functions' return type would not have been type
checked (e.g. if you tried to add a {printf, "printf", 2}, where printf
is a function that does not return jv, the compiler wouldn't have
complained.)
We were already not typechecking the arguments of the functions, so e.g.
{binop_plus, "_plus", 3}, /* instead of {f_plus, "_plus, 3}, */
{f_setpath, "setpath", 4}, /* instead of {f_setpath, "setpath", 3}, */
compile without errors despite not having the correct prototype.
So I thought of instead improving the situation by redefining
cfunction.fptr as a union of function pointers with the prototypes that
the jq bytecode interpreter can call, and use a macro to add the builtin
functions to function_list using to the arity argument to assign the
implementation function to the appropriate union member.
Now the code won't compile if the wrong arity, or an arity not supported
by the bytecode interpreter (>5 = 1input+4arguments), or a prototype not
jallable by the bytecode interpreter (e.g. binop_plus that doesn't
expect a jq_state* argument).
Also, the code now compiles with gcc -std=c23.
Fixes#3206
This check was redundant and useless since jv2tm() used to require 8
elements, and errored anyway if not enough elements were provided.
After commit bc96146, this check also prevents mktime/0 from accepting
now supported inputs with less than 8 elements.
Ref: https://github.com/jqlang/jq/pull/3070#issuecomment-2299902072
Reported-by: itchyny <itchyny@cybozu.co.jp>
Now, time functions accept array inputs even if they don't have all the
elements, 0 will be assumed if a value is not present.
Also, jv2tm now properly clamps large number values to a signed 32-bit
integer and rejects nan.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65885
There was a incorrect else, that caused jq to not ensure that the
argument to strftime/1 is a string when the input is a number; this ends
up calling jv_string_value on a non-string value, which does not work,
and causes an assert failure.
Also fix same bug in strflocaltime/1.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=67403
Previously, the tonumber/0 filter parses the input as JSON values, but
this is less-performant on large non-number strings. Parsing the input
string as number literal fixes the performance issue. Also, this fix
changes the filter to reject numbers with white spaces.
C99 only allows string literals long at most 4095 characters.
jq_builtins was a lot longer than that.
I rewrote all the optional libm error stubs in C so the value of
jq_builtins is not build dependent.
I replaced the command that generates builtin.inc with a POSIX compliant
od|sed command that encodes builtin.jq as a comma delimited list of
octal numbers (that can be embedded in C using a {} literal).
I also added -Woverlength-strings to AM_CFLAGS to verify that the
problem is fixed.
Fixes#1481
Previously, ltrimstr/rtrimstr would just let the input pass through for
non-string inputs or arguments.
That was happening because, they were leaking the errors returned by
startswith/endswith treating them as if they were jv_false().
The leak was resolved by #2977 for 1.7.1
This patch rewrites ltrimstr and rtrimstr in jq, and makes them not
ignore startswith and endswith errors anymore.
ltrimstr/rtrimstr was ignoring and leaking the error returned by
f_startswith()/f_endswith().
This also means that they just let the input pass through for non-string
inputs or arguments.
Only fix the leak for now; in the next release, #2969 will make them
rethrow the error returned by startswith/endswith.
Ref: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64946
