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CVE-2026-98143— accel: ethosu: Don't read the U65 rounding mode as a storage mode

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: ethosu: 不应将 U65 的舍入模式误读为存储模式 在 NPU_SET_{IFM,OFM}_PRECISION 命令中，位 [15:14] 仅在 U85 硬件上用于选择激活数据的存储模式。而在 U65 硬件上，相同位段表示的是舍入模式。自该驱动程序引入以来，命令流解析器一直错误地将其当作存储模式来读取。 此前，由于这些未知值会直接“穿透”（fall through）switch 语句而未引起注意；但现在，系统已改为拒绝这些无效值，导致所有请求自然舍入（值

CVSS 7.8 · High EPSS 0.11% · P1

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b< 6b08adbda8ea797849e3654ce12cb3856ce6051a affected
5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b< db9deec5a345abc538d081fb221dc0b00a9695bd affected
6.19 affected
< 6.19 unaffected
7.2.7≤ 7.2.* unaffected
7.3-rc2≤ * unaffected
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I. Basic Information for CVE-2026-98143

Vulnerability Information
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Vulnerability Title
accel: ethosu: Don't read the U65 rounding mode as a storage mode
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: accel: ethosu: Don't read the U65 rounding mode as a storage mode Bits 15:14 of NPU_SET_{IFM,OFM}_PRECISION select the activation storage mode on U85 only. On U65 the same field holds the rounding mode, and the command stream parser has read it as a storage mode since the driver was added. That went unnoticed while unknown values fell through the switch, but now that they are rejected, every U65 command stream that asks for natural rounding (2) fails CMDSTREAM_BO_CREATE with -EINVAL. Mesa emits it for average pooling, concatenation, split, unpack, strided slice, LUT and argmax, which is 72 failures of the Teflon test suite on an i.MX93. Truncating rounding (1) is misread as well: it picks the two-tile address path and computes a bogus feature map size from tile bases the command stream never set. Read the field as a storage mode only on the hardware where it is one.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b ~ 6b08adbda8ea797849e3654ce12cb3856ce6051a -
Linux Linux 6.19 -

II. Public POCs for CVE-2026-98143

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III. Intelligence Information for CVE-2026-98143

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Patches & Fixes for CVE-2026-98143 (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-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
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-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
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-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop
CVE-2026-97991 7.8 HIGH vdpa_sim_blk: reject out-of-range sector starts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98122 7.8 HIGH vxlan: mdb: Fix use-after-free in vxlan_mdb_remote_src_del()
CVE-2026-97612 7.8 HIGH net: mpls: clear inner_protocol when the last label is popped
CVE-2026-97594 7.8 HIGH landlock: Fix use-after-free of the source's parent directory
CVE-2026-97611 7.8 HIGH net: openvswitch: fix use-after-free of the flow table mask array
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation

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-2026-98143

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