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126 vulnerabilities found for Zephyr by zephyrproject-rtos
CVE-2026-5068 (GCVE-0-2026-5068)
Vulnerability from cvelistv5
Published
2026-06-09 06:20
Modified
2026-06-09 13:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan_ops.alloc_buf) and the chosen RX pool has a user_data_size smaller than 2 bytes, the segmentation counter stored in the net_buf user_data area is written out of bounds in l2cap_chan_le_recv_seg (subsys/bluetooth/host/l2cap.c). The observed effects are an AddressSanitizer abort and, without ASan, heap corruption / fatal error.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: 1.14.0 |
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CVE-2026-5067 (GCVE-0-2026-5067)
Vulnerability from cvelistv5
Published
2026-06-09 06:01
Modified
2026-06-09 13:12
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and subsequent concatenation with the WebSocket magic string can write out of bounds. This leads to out-of-bounds read and write on stack memory, resulting in crash (denial of service) and potentially code execution. The path is reachable when CONFIG_HTTP_SERVER_WEBSOCKET is enabled.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: 3.7.0 |
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CVE-2026-5066 (GCVE-0-2026-5066)
Vulnerability from cvelistv5
Published
2026-06-04 20:31
Modified
2026-06-05 18:26
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
A potential out-of-bounds write/read exists in the TLS socket connect path of the network sockets subsystem (subsys/net/lib/sockets/sockets_tls.c). When the TLS session cache is enabled, tls_session_store() and tls_session_restore() memcpy the caller-supplied address into a fixed-size buffer using the caller-controlled addrlen value without validating it against the destination size. struct net_sockaddr is an opaque type, so an application can pass an addrlen larger than sizeof(struct net_sockaddr) (for example 128 bytes into a 24-byte stack buffer), causing the memcpy to read and write past the end of the address memory used by the TLS session cache. This out-of-bounds write can lead to a crash and denial of service, and potentially to arbitrary code execution.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-5589 (GCVE-0-2026-5589)
Vulnerability from cvelistv5
Published
2026-06-04 19:54
Modified
2026-06-05 18:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
An integer underflow in bt_mesh_sol_recv() in the Bluetooth Mesh solicitation handling (subsys/bluetooth/mesh/solicitation.c) leads to an out-of-bounds write. When CONFIG_BT_MESH_OD_PRIV_PROXY_SRV is enabled, the function parses solicitation PDUs from raw BLE advertising payloads. The AD parsing loop reads an attacker-controlled length byte (reported_len) and computes reported_len - 3 without checking that reported_len >= 3. When reported_len is less than 3, the subtraction is performed in signed int arithmetic and yields a negative value that bypasses the length guard and is then implicitly converted to a very large size_t when passed to net_buf_simple_pull_mem(). In builds without assertions, this wraps the buffer length and advances the data pointer far out of bounds, so subsequent reads dereference invalid memory. A nearby BLE device can trigger this with a non-connectable advertisement carrying a UUID16 AD structure and a crafted length byte, with no pairing or prior association required, potentially leading to denial of service or arbitrary code execution.
References
Impacted products
| Vendor | Product | Version | ||
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| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-5071 (GCVE-0-2026-5071)
Vulnerability from cvelistv5
Published
2026-05-30 07:15
Modified
2026-06-01 13:51
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
The SocketCAN implementation validates the length of a user-provided buffer containing a socketcan_frame object using only a NET_ASSERT statement in zcan_sendto_ctx() before dereferencing it in socketcan_to_can_frame(). In production builds where assertions are disabled, a userspace application that controls the length passed to a sendto syscall can supply an incomplete or truncated frame, causing socketcan_to_can_frame() to dereference fields beyond the end of the buffer. This results in an out-of-bounds read that can cause denial-of-service crashes or, because the parsed frame contents are transmitted on the network, leak adjacent memory.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-5072 (GCVE-0-2026-5072)
Vulnerability from cvelistv5
Published
2026-05-22 07:00
Modified
2026-05-26 17:46
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A bitwise shift vulnerability in Zephyr's PTP subsystem allows a remote attacker to cause undefined behavior and potential system crashes. An attacker sends a crafted PTP_MSG_MANAGEMENT message to set an unvalidated negative log_announce_interval value in the port's data set. When a subsequent PTP_MSG_ANNOUNCE message is processed, port_timer_set_timeout_random computes a timeout as NSEC_PER_SEC >> -log_seconds; if the attacker-supplied value is sufficiently negative (e.g., -127), the shift amount exceeds the 64-bit integer width, triggering undefined behavior in C. This can cause a system crash via a compiler-generated illegal instruction trap on some architectures, or produce an erroneous zero timeout leading to resource starvation loops or other logical errors.
References
Impacted products
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| zephyrproject-rtos | Zephyr |
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CVE-2026-1681 (GCVE-0-2026-1681)
Vulnerability from cvelistv5
Published
2026-05-12 05:39
Modified
2026-05-12 13:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-674 - Uncontrolled Recursion
Summary
Issuing an ICMP ping via the `net ping` shell command to a device's own IPv4 address causes the network stack to recursively re-enter the input path on the same system work-queue stack. Because the destination is recognized as a local address, both the echo request and the resulting echo reply are processed inline before the current frame returns. The nested input-path frames exceed the work-queue stack and trigger a stack overflow.
References
Impacted products
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CVE-2026-1677 (GCVE-0-2026-1677)
Vulnerability from cvelistv5
Published
2026-05-11 05:52
Modified
2026-05-11 16:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Summary
Zephyr sockets created with `IPPROTO_TLS_1_3` can still negotiate a TLS 1.2 connection when both TLS versions are enabled in Kconfig, because the socket-level protocol selection is not propagated to mbedTLS (e.g. via `mbedtls_ssl_conf_min_tls_version`). The ClientHello advertises both versions and the peer can establish TLS 1.2, so applications that assumed `IPPROTO_TLS_1_3` enforces TLS 1.3 may silently use TLS 1.2 and remain exposed to TLS 1.2-specific weaknesses. As a workaround, the `TLS_CIPHERSUITE_LIST` socket option can be restricted to TLS 1.3-only cipher suites.
References
Impacted products
| Vendor | Product | Version | ||
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| zephyrproject-rtos | Zephyr |
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CVE-2026-5590 (GCVE-0-2026-5590)
Vulnerability from cvelistv5
Published
2026-04-05 03:34
Modified
2026-04-06 14:22
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A race condition during TCP connection teardown can cause tcp_recv() to operate on a connection that has already been released. If tcp_conn_search() returns NULL while processing a SYN packet, a NULL pointer derived from stale context data is passed to tcp_backlog_is_full() and dereferenced without validation, leading to a crash.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-1679 (GCVE-0-2026-1679)
Vulnerability from cvelistv5
Published
2026-03-27 23:21
Modified
2026-04-01 13:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-4179 (GCVE-0-2026-4179)
Vulnerability from cvelistv5
Published
2026-03-14 21:51
Modified
2026-03-16 19:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
Issues in stm32 USB device driver (drivers/usb/device/usb_dc_stm32.c) can lead to an infinite while loop.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-0849 (GCVE-0-2026-0849)
Vulnerability from cvelistv5
Published
2026-03-14 21:05
Modified
2026-03-17 15:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
Malformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.
References
Impacted products
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|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2026-1678 (GCVE-0-2026-1678)
Vulnerability from cvelistv5
Published
2026-03-05 06:21
Modified
2026-03-05 15:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
dns_unpack_name() caches the buffer tailroom once and reuses it while appending DNS labels. As the buffer grows, the cached size becomes incorrect, and the final null terminator can be written past the buffer. With assertions disabled (default), a malicious DNS response can trigger an out-of-bounds write when CONFIG_DNS_RESOLVER is enabled.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-12899 (GCVE-0-2025-12899)
Vulnerability from cvelistv5
Published
2026-01-30 05:34
Modified
2026-01-30 14:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Summary
A flaw in Zephyr’s network stack allows an IPv4 packet containing ICMP type 128 to be misclassified as an ICMPv6 Echo Request. This results in an out-of-bounds memory read and creates a potential information-leak vulnerability in the networking subsystem.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-12035 (GCVE-0-2025-12035)
Vulnerability from cvelistv5
Published
2025-12-15 19:42
Modified
2025-12-15 20:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-190 - Integer Overflow or Wraparound
Summary
An integer overflow condition exists in Bluetooth Host stack, within the bt_br_acl_recv routine a critical path for processing inbound BR/EDR L2CAP traffic.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-9557 (GCVE-0-2025-9557)
Vulnerability from cvelistv5
Published
2025-11-26 05:43
Modified
2025-11-26 14:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
â€An out-of-bound write can lead to an arbitrary code execution. Even on devices with some form of memory protection, this can still lead to‬ â€a crash and a resultant denial of service.‬
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-9558 (GCVE-0-2025-9558)
Vulnerability from cvelistv5
Published
2025-11-26 05:39
Modified
2025-11-26 14:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
There is a potential OOB Write vulnerability in the gen_prov_start function in pb_adv.c. The full length of the received data is copied into the link.rx.buf receiver buffer without any validation on the data size.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-9408 (GCVE-0-2025-9408)
Vulnerability from cvelistv5
Published
2025-11-11 15:34
Modified
2025-11-12 20:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-270 - Privilege Context Switching Error
Summary
System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-12890 (GCVE-0-2025-12890)
Vulnerability from cvelistv5
Published
2025-11-07 18:40
Modified
2025-11-10 20:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-703 - Improper Check or Handling of Exceptional Conditions
Summary
Improper handling of malformed Connection Request with the interval set to be 1 (which supposed to be illegal) and the chM 0x7CFFFFFFFF triggers a crash. The peripheral will not be connectable after it.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-10456 (GCVE-0-2025-10456)
Vulnerability from cvelistv5
Published
2025-09-19 05:21
Modified
2025-09-19 11:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-190 - Integer Overflow or Wraparound
Summary
A vulnerability was identified in the handling of Bluetooth Low Energy (BLE) fixed channels (such as SMP or ATT). Specifically, an attacker could exploit a flaw that causes the BLE target (i.e., the device under attack) to attempt to disconnect a fixed channel, which is not allowed per the Bluetooth specification. This leads to undefined behavior, including potential assertion failures, crashes, or memory corruption, depending on the BLE stack implementation.
References
Impacted products
| Vendor | Product | Version | ||
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| zephyrproject-rtos | Zephyr |
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CVE-2025-10458 (GCVE-0-2025-10458)
Vulnerability from cvelistv5
Published
2025-09-19 05:20
Modified
2025-09-19 13:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-130 - Improper Handling of Length Parameter Inconsistency
Summary
Parameters are not validated or sanitized, and are later used in various internal operations.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
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CVE-2025-7403 (GCVE-0-2025-7403)
Vulnerability from cvelistv5
Published
2025-09-19 05:19
Modified
2025-09-19 13:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-123 - Write-what-where Condition
Summary
Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.
References
Impacted products
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| zephyrproject-rtos | Zephyr |
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CVE-2025-10457 (GCVE-0-2025-10457)
Vulnerability from cvelistv5
Published
2025-09-19 05:17
Modified
2025-09-19 13:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-358 - Improperly Implemented Security Check for Standard
Summary
The function responsible for handling BLE connection responses does not verify whether a response is expected—that is, whether the device has initiated a connection request. Instead, it relies solely on identifier matching.
References
Impacted products
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| zephyrproject-rtos | Zephyr |
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CVE-2025-2962 (GCVE-0-2025-2962)
Vulnerability from cvelistv5
Published
2025-06-24 05:32
Modified
2025-06-24 14:22
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
A denial-of-service issue in the dns implemenation could cause an infinite loop.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * Version: * |
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CVE-2025-1675 (GCVE-0-2025-1675)
Vulnerability from cvelistv5
Published
2025-02-25 07:22
Modified
2025-02-28 17:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
The function dns_copy_qname in dns_pack.c performs performs a memcpy operation with an untrusted field and does not check if the source buffer is large enough to contain the copied data.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2025-1674 (GCVE-0-2025-1674)
Vulnerability from cvelistv5
Published
2025-02-25 07:18
Modified
2025-02-28 17:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
A lack of input validation allows for out of bounds reads caused by malicious or malformed packets.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
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CVE-2025-1673 (GCVE-0-2025-1673)
Vulnerability from cvelistv5
Published
2025-02-25 07:12
Modified
2025-02-28 17:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
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CVE-2024-10395 (GCVE-0-2024-10395)
Vulnerability from cvelistv5
Published
2025-02-03 06:59
Modified
2025-02-03 16:58
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-127 - Buffer Under-read
Summary
No proper validation of the length of user input in http_server_get_content_type_from_extension.
References
Impacted products
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|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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CVE-2024-8798 (GCVE-0-2024-8798)
Vulnerability from cvelistv5
Published
2024-12-15 23:23
Modified
2025-09-17 05:27
Severity ?
VLAI Severity ?
EPSS score ?
Summary
No proper validation of the length of user input in olcp_ind_handler in zephyr/subsys/bluetooth/services/ots/ots_client.c.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
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CVE-2024-11263 (GCVE-0-2024-11263)
Vulnerability from cvelistv5
Published
2024-11-15 22:53
Modified
2024-11-18 17:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-270 - Privilege Context Switching Error
Summary
When the Global Pointer (GP) relative addressing is enabled (CONFIG_RISCV_GP=y), the gp reg points at 0x800 bytes past the start of the .sdata section which is then used by the linker to relax accesses to global symbols.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Version: * |
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