CVE-2026-98204
Low risk· EPSS 8%Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
In the Linux kernel, the Input: rmi_smbus driver has an out-of-bounds read in rmi_smb_write_block(). When chunking writes into SMBus blocks, the block length is calculated using the original total length instead of the remaining length, causing a read of 32 bytes even when fewer remain. The fix uses the remaining length.
Risk Assessment
This can lead to out-of-bounds read, causing system crash or potential code execution. It requires access to an RMI SMBus device.
Recommendation
Update the Linux kernel to a version with the fix. Avoid using untrusted RMI SMBus devices.
Other vulnerabilities in Linux kernel
See all- CVE-2026-118593Medium
A flaw was found in Red Hat Enterprise Linux 9 kernel builds. An incomplete backport of the CVE-2026-46099 fix in RHEL 9.6 through 9.10 left a local_bh imbalance in seg6_input_core(), where the drop path returns with bottom halves still disabled. This can lead to softirq starvation and denial of service on systems with SRv6 tunnels configured. Upstream and RHEL 10 are not affected.
- CVE-2026-99216Unknown
In the Linux kernel, the Hyper-V (hv) driver incorrectly forces the VMBus connection state to DISCONNECTED before calling vmbus_disconnect(). As a result, vmbus_initiate_unload() does not unload the connection because it only acts when the state is CONNECTED, so the Hyper-V host may continue sending messages or posting VMBus interrupts.
- CVE-2026-99215Unknown
In the Linux kernel power supply subsystem, a use-after-free vulnerability exists. If a power supply is unregistered while its external_power_changed() callback is still running, the driver may free data that the callback is still accessing, leading to a kernel crash (NULL pointer dereference).
- CVE-2026-99214Unknown
In the Linux kernel, the drm/vc4 HDMI driver has an ordering issue with Packet RAM enabling. When audio is triggered by the HPD handler before video is restored, vc4_hdmi_write_infoframe() may attempt to store an infoframe while Packet RAM is disabled, causing a kernel warning (splat). The fix moves Packet RAM enable/disable into the Runtime PM hooks.
- CVE-2026-99213Unknown
In the Linux kernel vsock subsystem, the TCP_ESTABLISHED to TCP_CLOSING transition on OP_RST can race with the connect loop. Resetting a socket still present in connected_table can lead to memory corruption, including a double list add and a kernel BUG.
- CVE-2026-99212Unknown
In the Linux kernel net/rds module, rds_rdma_cm_event_handler_cmn() returns the result of rdma_resolve_route() directly to rdma_cm on RDMA_CM_EVENT_ADDR_RESOLVED. A synchronous failure causes the id ic->i_cm_id to be destroyed while RDS still owns it, leading to use of a freed id during connection shutdown.
- CVE-2026-99211Unknown
In the Linux kernel netlink subsystem, socket filters can use SKF_NET_OFF and SKF_LL_OFF to read relative to an skb's network and MAC headers. Netlink producers may reserve headroom without resetting those headers, allowing a receiving socket's filter to read data before the initialized message and disclose memory contents.
- CVE-2026-99210Unknown
In the Linux kernel accel/rocket driver, rocket_probe() stores the return value of rocket_device_init() in the file-scoped rdev pointer before checking whether it is an error pointer. On failure rdev remains an ERR_PTR, and a later probe can skip initialization and dereference the error pointer when reading rdev->num_cores.
- CVE-2026-99209Unknown
In the Linux kernel drm/xe driver, xe_evict_flags() reads tbo->resource->mem_type, but a BO can reach eviction with no ttm.resource, e.g. an imported dma-buf whose resource was freed during teardown. This causes a NULL pointer dereference and a kernel fault.
- CVE-2026-99208Unknown
In the Linux kernel drm/xe/oa driver, ttm_bo_type_kernel BOs are not guaranteed to be zeroed on allocation and may contain data from previously freed pages. Since the OA buffer is mmap'able by userspace, this can expose stale kernel memory contents.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block() When chunking writes into SMBus blocks in rmi_smb_write_block(), the loop calculates block_len using the original total length (len) instead of the remaining length (cur_len). If len is greater than 32 bytes (SMB_MAX_COUNT), block_len remains 32 for every iteration, even on the final partial chunk where fewer than 32 bytes remain. This causes smb_block_write() to read 32 bytes from the advanced data buffer pointer, reading past the end of the input buffer. Fix this by calculating block_len using cur_len and advancing the buffer and address pointers by block_len.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS