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CVE-2026-98145— accel/amdxdna: reject a command chain that carries no commands

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： accel/amdxdna：拒绝包含空命令链的命令请求 当命令链的 为零时，会通过后缀 payload 长度检查，因为 仅计算了头部大小。此时填充循环不会执行，导致偏移量 保持为零，最终提交一个长度为零的请求。 在固件中若未定义 （即指令检查未在此处终止），由于 仍为 ，函数 返回 ，而无论输入为何， 均返回 。因此，提交流程继续执行至 ，该操作会读取缓冲区前一个字节，并在 vmap 保护页上触发错误（fault）。由于任何能够打开渲染节点（render node）的用户进

AI Predicted 5.5 Difficulty: Easy EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 8ed8b02396172b137ca8c78c3cb999ddf4fb0bbf< ed74e8d603df457bfcf16ed4f8f1660a1525759e affected
8ed8b02396172b137ca8c78c3cb999ddf4fb0bbf< ef6d27af71e1dc43181ec797a6aaa77c27c36786 affected
7.1 affected
< 7.1 unaffected
7.2.7≤ 7.2.* unaffected
7.3-rc2≤ * unaffected
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I. Basic Information for CVE-2026-98145

Vulnerability Information
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Vulnerability Title
accel/amdxdna: reject a command chain that carries no commands
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: reject a command chain that carries no commands A chain whose command_count is zero passes the payload length check, because struct_size(payload, data, 0) is just the header. The fill loop then does not run, so offset stays zero and the request is submitted with a zero-length buffer. On firmware without AIE2_NPU_COMMAND that ends at the opcode check, since op is still ERT_INVALID_CMD and aie2_get_chain_msg_op() answers MSG_OP_MAX_OPCODE. aie2_get_npu_chain_msg_op() answers MSG_OP_CHAIN_EXEC_NPU whatever it is given, so there the submission continues to drm_clflush_virt_range(cmd_buf, 0), which reads the byte before the buffer and faults on the vmap guard page. EXEC_CMD is reachable by any process that can open the render node. Reject the request instead.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8ed8b02396172b137ca8c78c3cb999ddf4fb0bbf ~ ed74e8d603df457bfcf16ed4f8f1660a1525759e -
Linux Linux 7.1 -

II. Public POCs for CVE-2026-98145

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III. Intelligence Information for CVE-2026-98145

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Patches & Fixes for CVE-2026-98145 (2)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98122 7.8 HIGH vxlan: mdb: Fix use-after-free in vxlan_mdb_remote_src_del()
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-98116 7.8 HIGH ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98145

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