CVE-2026-98168
Low risk· EPSS 9%Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel SMB client, cifs_query_reparse_point() only checks that the start pointer is within the response (start >= end) but does not verify there is enough space for the fixed 8-byte header of the reparse_data_buffer structure. If a server provides a DataOffset leaving less than 8 bytes, reads of ReparseTag and ReparseDataLength occur out-of-bounds.
Risk Assessment
Out-of-bounds reads can leak kernel memory or cause a system crash. It affects systems using reparse points on SMB shares.
Recommendation
Update the Linux kernel to a version with the fix that verifies the remaining space is at least the size of the reparse_data_buffer structure before accessing its fields.
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: smb: client: fix reparse buffer bounds in cifs_query_reparse_point() In cifs_query_reparse_point(), the start >= end check before casting to struct reparse_data_buffer * only ensures the start pointer is within the response. It fails to verify that there is enough space remaining for the fixed 8-byte header of the structure. If a server provides a DataOffset that leaves less than 8 bytes remaining, the check passes, but subsequent reads of ReparseTag and ReparseDataLength will occur out-of-bounds. Fix this by ensuring the remaining space is at least the size of the reparse_data_buffer structure before accessing its fields.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS