CVE-2026-97981— net: ethernet: cortina: Count dropped frames as NAPI work
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，已解决以下漏洞： 网络：以太网：Cortina 驱动程序：将丢包计入 NAPI 工作 RX（接收）循环仅在成功交付帧时才消耗预算。错误处理路径会持续消耗描述符，但不会减少预算，因此，大量错误帧可能导致在单次轮询中耗尽整个接收队列。 将预算计数逻辑移至统一的帧处理结束路径。无论帧是成功交付还是被丢弃，每个完成的帧都被计为 NAPI 工作，这与厂商驱动程序的行为保持一致。
Possible ATT&CK Techniques 1 AI
T1496 · Resource HijackingAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 620b7184808b25cf58268856f892b9ba83c181fd |
affected |
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 9620e2ce9b5998ebbf157241f296f8ddb92285c2 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 27b5753077d1cfda5fe201d2ba602de76a9a09b1 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< e858b9b1ea3cbbc353189d07dec40dc16967e290 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 58140f1cebb776d174dc6ff41c15401654a5b1ea |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< cceb6cd7f0e5ed2944a9ca22443d7b9da82f60ab |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 5754e0c0758805096ecfeaf4c1b146ad51ed246f |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< b856c552f556bc0341c1dbe0bf88e630fd1dc4b7 |
affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-97981
Vulnerability Information
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Vulnerability Title
net: ethernet: cortina: Count dropped frames as NAPI work
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: cortina: Count dropped frames as NAPI work
The RX loop only consumes budget when it successfully delivers a frame.
Error paths keep consuming descriptors without reducing the budget, so a
stream of bad frames can process the entire receive ring in one poll.
Move the budget accounting to a common end-of-frame path. This counts
each completed frame as NAPI work whether it was delivered or dropped,
matching the behavior of the vendor driver.
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
II. Public POCs for CVE-2026-97981
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-97981 (8)
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-2026-97941 | 7.8 HIGH | mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race |
| 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-2026-98002 | 7.8 HIGH | iommu/amd: Fix ineffective error check in nested domain allocation |
| CVE-2026-98112 | 7.8 HIGH | ksmbd: fix listener task lifetime on netdev events |
| CVE-2026-97937 | 7.8 HIGH | ftrace: fork: Initialize function graph state before copy_exec_state() |
| 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 → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2026-97981
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