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openSUSE-SU-2026:21248-1

Опубликовано: 07 июл. 2026
Источник: suse-cvrf

Описание

Security update for jq

This update for jq fixes the following issues:

  • CVE-2025-48060: improper handling of string data in jv_string_empty can lead to heap buffer overflow and a crash when processing crafted input (bsc#1244116).
  • CVE-2026-32316: integer overflow within the jvp_string_append() and jvp_string_copy_replace_bad functions can lead to heap buffer overflow when evaluating untrusted jq queries (bsc#1262044).
  • CVE-2026-33947: unbounded recursion in functions jv_setpath(), jv_getpath(), and delpaths_sorted() can lead to excessive resource consumption when processing crafted JSON input (bsc#1262069).
  • CVE-2026-39956: missing runtime type checks in _strindices and jv_string_indexes() can lead to a crash when evaluating untrusted jq filters against a release build (bsc#1262070).
  • CVE-2026-39979: incorrect processing of non-nul-terminated counted buffers in jv_parse_sized can lead to an out-of-bounds read when processing malformed JSON (bsc#1262071).
  • CVE-2026-40164: use of MurmurHash3 with a hardcoded seed allows pre-computation of key collisions and can lead to a denial of service via resource exhaustion when processing crafted JSON objects (bsc#1262072).
  • CVE-2026-40612: recursion into nested arrays/objects with no depth limit in jv_contains can lead to a C stack exhaustion when processing crafted input (bsc#1265060).
  • CVE-2026-41256: truncation of top-level jq programs loaded with -f and can lead to the execution of unintended programs (bsc#1265061).
  • CVE-2026-41257: integer overflow in stack_reallocate can lead to memory corruption and DoS when processing jq bytecode (bsc#1265062).
  • CVE-2026-43894: signed integer overflow in the decNumberFromString D2U() macro can lead to an out-of-bounds memory write when processing large number literals (bsc#1265070).
  • CVE-2026-33948: improper handling of buffer sizes via strlen() instead of fgets() in CLI input parsing allows validation bypass via embedded NUL bytes (bsc#1262043).

Список пакетов

openSUSE Leap 16.0
jq-1.7.1-160000.3.1
libjq-devel-1.7.1-160000.3.1
libjq1-1.7.1-160000.3.1

Ссылки

Описание

jq is a command-line JSON processor. In versions up to and including 1.7.1, a heap-buffer-overflow is present in function `jv_string_vfmt` in the jq_fuzz_execute harness from oss-fuzz. This crash happens on file jv.c, line 1456 `void* p = malloc(sz);`. As of time of publication, no patched versions are available.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvp_string_append() and jvp_string_copy_replace_bad functions, where concatenating strings with a combined length exceeding 2^31 bytes causes a 32-bit unsigned integer overflow in the buffer allocation size calculation, resulting in a drastically undersized heap buffer. Subsequent memory copy operations then write the full string data into this undersized buffer, causing a heap buffer overflow classified as CWE-190 (Integer Overflow) leading to CWE-122 (Heap-based Buffer Overflow). Any system evaluating untrusted jq queries is affected, as an attacker can crash the process or potentially achieve further exploitation through heap corruption by crafting queries that produce extremely large strings. The root cause is the absence of string size bounds checking, unlike arrays and objects which already have size limits. The issue has been addressed in commit e47e56d226519635768e6aab2f38f0ab037c09e5.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In versions 1.8.1 and below, functions jv_setpath(), jv_getpath(), and delpaths_sorted() in jq's src/jv_aux.c use unbounded recursion whose depth is controlled by the length of a caller-supplied path array, with no depth limit enforced. An attacker can supply a JSON document containing a flat array of ~65,000 integers (~200 KB) that, when used as a path argument by a trusted jq filter, exhausts the C call stack and crashes the process with a segmentation fault (SIGSEGV). This bypass works because the existing MAX_PARSING_DEPTH (10,000) limit only protects the JSON parser, not runtime path operations where arrays can be programmatically constructed to arbitrary lengths. The impact is denial of service (unrecoverable crash) affecting any application or service that processes untrusted JSON input through jq's setpath, getpath, or delpaths builtins. This issue has been addressed in commit fb59f1491058d58bdc3e8dd28f1773d1ac690a1f.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. Commits before 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b contain a vulnerability where CLI input parsing allows validation bypass via embedded NUL bytes. When reading JSON from files or stdin, jq uses strlen() to determine buffer length instead of the actual byte count from fgets(), causing it to truncate input at the first NUL byte and parse only the preceding prefix. This enables an attacker to craft input with a benign JSON prefix before a NUL byte followed by malicious trailing data, where jq validates only the prefix as valid JSON while silently discarding the suffix. Workflows relying on jq to validate untrusted JSON before forwarding it to downstream consumers are susceptible to parser differential attacks, as those consumers may process the full input including the malicious trailing bytes. This issue has been patched by commit 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In commits after 69785bf77f86e2ea1b4a20ca86775916889e91c9, the _strindices builtin in jq's src/builtin.c passes its arguments directly to jv_string_indexes() without verifying they are strings, and jv_string_indexes() in src/jv.c relies solely on assert() checks that are stripped in release builds compiled with -DNDEBUG. This allows an attacker to crash jq trivially with input like _strindices(0), and by crafting a numeric value whose IEEE-754 bit pattern maps to a chosen pointer, achieve a controlled pointer dereference and limited memory read/probe primitive. Any deployment that evaluates untrusted jq filters against a release build is vulnerable. This issue has been patched in commit fdf8ef0f0810e3d365cdd5160de43db46f57ed03.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In commits before 2f09060afab23fe9390cce7cb860b10416e1bf5f, the jv_parse_sized() API in libjq accepts a counted buffer with an explicit length parameter, but its error-handling path formats the input buffer using %s in jv_string_fmt(), which reads until a NUL terminator is found rather than respecting the caller-supplied length. This means that when malformed JSON is passed in a non-NUL-terminated buffer, the error construction logic performs an out-of-bounds read past the end of the buffer. The vulnerability is reachable by any libjq consumer calling jv_parse_sized() with untrusted input, and depending on memory layout, can result in memory disclosure or process termination. The issue has been patched in commit 2f09060afab23fe9390cce7cb860b10416e1bf5f.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. Before commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784, jq used MurmurHash3 with a hardcoded, publicly visible seed (0x432A9843) for all JSON object hash table operations, which allowed an attacker to precompute key collisions offline. By supplying a crafted JSON object (~100 KB) where all keys hashed to the same bucket, hash table lookups degraded from O(1) to O(n), turning any jq expression into an O(n²) operation and causing significant CPU exhaustion. This affected common jq use cases such as CI/CD pipelines, web services, and data processing scripts, and was far more practical to exploit than existing heap overflow issues since it required only a small payload. This issue has been patched in commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In 1.8.1 and earlier, Top-level jq programs loaded from a file with -f are truncated at the first embedded NUL byte on current upstream HEAD. A crafted filter file such as . followed by \x00 and arbitrary suffix compiles and executes as only the prefix before the NUL. This leaves jq with a post-CVE-2026-33948 prefix/full-buffer mismatch on the compilation path even though the JSON parser path has already been fixed.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ~1 GiB (via deeply nested generator forks), the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for a memmove with attacker-influenced offsets.

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки

Описание

jq is a command-line JSON processor. In 1.8.1 and earlier, when decNumberFromString is given a number literal of INT_MAX-1 (2147483646) digits, the D2U() macro overflows during signed-int arithmetic. The wrapped negative value bypasses the heap-allocation size check, causes the function to use a 30-byte stack buffer, and then writes ~715 million 16-bit units (~1.4 GiB) at an offset 1.43 GiB below the stack frame. The written content is fully attacker-controlled (the parsed decimal digits, packed 3-per-unit).

Затронутые продукты
openSUSE Leap 16.0:jq-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq-devel-1.7.1-160000.3.1
openSUSE Leap 16.0:libjq1-1.7.1-160000.3.1
Ссылки
Уязвимость openSUSE-SU-2026:21248-1