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CVE-2026-97573— bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()

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： bnxt_en：处理 bnxt_rx_ring_reset() 中的缓冲区分配失败 函数会释放环缓冲区，然后重新分配它们，但忽略了分配结果。 可能在 中失败，该函数在首次分配失败时返回 ，并将剩余的 条目置为零。 由于错误未被向上传播， 中的循环继续执行，最终代码在 数组部分未分配的情况下重新启用了 TPA（TCP Segmentation Offload 相关功能）。 这意味着，当硬件中的 映射到 中的软件索引时，可能会选择一个未初始化的槽位，从而向设备传递零 DMA 地

CVSS 8.1 · High EPSS 0.53% · P42

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 8fbf58e17dce8f250dda9ad6b0a49b3041f0af14< 1a3670b6a6b5679fe56c5890157b344f091e64f8 affected
8fbf58e17dce8f250dda9ad6b0a49b3041f0af14< 4a17c73c83798c2fa9c7920ad5a98803adce3e01 affected
8fbf58e17dce8f250dda9ad6b0a49b3041f0af14< 8b2fd5c0aeda935294159206af9d6179282d425a affected
8fbf58e17dce8f250dda9ad6b0a49b3041f0af14< 961e2a17c5e3559b3f8654d2daabdd25a42e770a affected
5.10 affected
< 5.10 unaffected
6.12.111≤ 6.12.* unaffected
6.18.53≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-97573

Vulnerability Information
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Vulnerability Title
bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset() bnxt_rx_ring_reset() frees the ring buffers and then reallocates them, ignoring the result. bnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which returns -ENOMEM on the first failed allocation and leaves the remaining rxr->rx_tpa[] entries zeroed. The error isn't propagated up, so the loop in bnxt_rx_ring_reset continues and at the end the code re-enables TPA with partially unallocated rx_tpa array. This means that when the agg_id from hardware is mapped to a SW index in rxr->rx_tpa[], an uninitialized slot can be chosen which would hand a zero DMA address to the device. Fix this by falling back to a global reset, which is what the existing code already does when other functions fail, but unlike the other failure cases this particular failure has to return because TPA can't be re-enabled since the allocation failed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/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 8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 ~ 1a3670b6a6b5679fe56c5890157b344f091e64f8 -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-97573

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III. Intelligence Information for CVE-2026-97573

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Patches & Fixes for CVE-2026-97573 (4)

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-2026-97957 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-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
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-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-97911 7.8 HIGH accel: ethosu: Ensure SRAM region size matches job
CVE-2026-98023 7.8 HIGH vxlan: reject dynamic fdb entries that reference a nexthop id
CVE-2026-97910 7.8 HIGH ASoC: sprd: validate compress buffer sizes against fixed allocations
CVE-2026-97584 7.8 HIGH afs: Fix incorrect free in candidate cleanup in afs_lookup_server()
CVE-2026-98143 7.8 HIGH accel: ethosu: Don't read the U65 rounding mode as a storage mode
CVE-2026-97903 7.8 HIGH exit: hold a reference to thread_pid across proc_flush_pid
CVE-2026-97548 7.8 HIGH xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions
CVE-2026-97594 7.8 HIGH landlock: Fix use-after-free of the source's parent directory
CVE-2026-98073 7.8 HIGH net: Remove conflicting altnames for dying netns in __dev_change_net_namespace().

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-2026-97573

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