CVE-2026-93096

CVE-2026-93096 is a concurrency bug in the Linux kernel's CXL (Compute Express Link) features subsystem . When a Get or Set Feature payload exceeds the mailbox payload size, it is split across multiple mailbox commands. The existing mbox_mutex serializes only individual commands and is dropped be...

EUVD-2026-82189

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Get Feature count larger than the output buffer cxlctlgetfeature sizes its output buffer from the user's fwctlrpc.outlen, but the device is told to write cxlmboxgetfeatin.count bytes into rpcout-payload, whic...

CVE-2026-93079

CVE-2026-93079 is a heap out-of-bounds write in the Linux kernel's CXL subsystem. In cxlctl_get_feature(), the output buffer is sized from the user-supplied fwctl_rpc.out_len, but the device is instructed to write cxl_mbox_get_feat_in.count bytes into that buffer. Because count is a separate user...

CVE-2026-93079 cxl/features: Reject Get Feature count larger than the output buffer

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Get Feature count larger than the output buffer cxlctlgetfeature sizes its output buffer from the user's fwctlrpc.outlen, but the device is told to write cxlmboxgetfeatin.count bytes into rpcout-payload, whic...

EUVD-2026-82187

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Clamp Get Feature output size to the remaining buffer cxlgetfeature reads a feature in a loop but passes a fixed sizeout as the output capacity every iteration. On the last partial iteration the buffer has less room...

CVE-2026-93078 cxl/features: Reject Set Features output buffer smaller than the header

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Set Features output buffer smaller than the header cxlctlsetfeature sizes its output buffer from the user's fwctlrpc.outlen but never checks it is large enough to hold even the fwctlrpccxlout header. With...

CVE-2026-93078

CVE-2026-93078 is a vulnerability in the Linux kernel 's cxl/features subsystem. The function cxlctl_set_feature() sizes its output buffer from the user-supplied fwctl_rpc.out_len without verifying it is large enough to hold the fwctl_rpc_cxl_out header. When out_len is zero, kvzalloc() returns Z...

CVE-2026-93077

CVE-2026-93077 affects the Linux kernel CXL (Compute Express Link) subsystem, specifically the cxl_get_feature() function in the cxl/features code. The function reads a device feature in a loop but passes a fixed output size as the capacity on every iteration. On the last partial iteration, the b...

EUVD-2026-82105

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix use-after-free in findposandways error path The error path releases its reference to a switch decoder before logging an error that includes the decoder name. If the released reference is the last one, the decoder...

CVE-2026-92484 cxl/region: Fix use-after-free in find_pos_and_ways() error path

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix use-after-free in findposandways error path The error path releases its reference to a switch decoder before logging an error that includes the decoder name. If the released reference is the last one, the decoder...

CVE-2026-92484

CVE-2026-92484 is a use-after-free vulnerability in the Linux kernel 's cxl/region subsystem, specifically in the find_pos_and_ways() error path. The bug occurs because the error handling code releases its reference to a switch decoder before logging an error message that includes the decoder's n...

CVE-2026-93079: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Get Feature count larger than the output buffer cxlctlgetfeature sizes its output buffer from the user's fwctlrpc.outlen, but the device is told to write cxlmboxgetfeatin.count bytes into rpcout-payload, whic...

CVE-2026-93077: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Clamp Get Feature output size to the remaining buffer cxlgetfeature reads a feature in a loop but passes a fixed sizeout as the output capacity every iteration. On the last partial iteration the buffer has less room...

CVE-2026-92484: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix use-after-free in findposandways error path The error path releases its reference to a switch decoder before logging an error that includes the decoder name. If the released reference is the last one, the decoder...

CVE-2026-93186: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/mbox: Clamp mailbox output allocation to the payload size CXLMEMSENDCOMMAND bounds the user's in.size to the mailbox payload size but leaves out.size unbounded, then cxlmboxcmdctor calls kvzallocout.size. A large out.size...

CVE-2026-93078: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Set Features output buffer smaller than the header cxlctlsetfeature sizes its output buffer from the user's fwctlrpc.outlen but never checks it is large enough to hold even the fwctlrpccxlout header. With...

CVE-2026-93096: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Serialize multi-part Get/Set Feature transfers A Get or Set Feature payload larger than the mailbox payload size is split into several mailbox commands. mboxmutex only serializes individual mailbox commands and is...

CVE-2026-93097: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cxl/mbox: Break poison list loop on an empty payload A device that returns count == 0 with CXLPOISONFLAGMORE set on every iteration never advances nrrecords, so the maxerrors guard never trips and the do/while loops forever while...

PT-2026-94982

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the CXL mailbox implementation where the out.size parameter is not bounded. When CXL MEM SEND COMMAND is used, the cxl mbox cmd ctor function calls kvzallocout.size...

PT-2026-94875

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the cxl get feature function where it reads a feature in a loop using a fixed size out as the output capacity for every iteration. During the final partial iteration,...