CVE-2026-97982— net: ethernet: cortina: Fix budget accounting
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： net: ethernet: cortina: 修复预算（budget）计数错误 gmac_rx() 函数返回的是剩余的 NAPI 预算值，但其调用方却将该返回值误认为是已接收的数据包数量。这导致空闲轮询（idle poll）误报为完整预算，从而持续被调度执行。 现改为返回实际接收的数据包数量。为保持现有的空闲队列（free queue）补充计数逻辑正确，应直接将该计数值累加到补充计数器中；如果继续从预算中减去该值，反而会颠倒队列补充的行为逻辑。
Possible ATT&CK Techniques 1 AI
T1055 · Process InjectionAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< d3deb54d9507c2d7f05efd896142095eef5b7d85 |
affected |
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< e6e5732b90d0fc25fd3d9961ff61e660297d7608 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< aa339ac334d4e51f43af9d2901e6faf11ffd981e |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 4ca84049c6428c665ef7c903a32a99ed0f1e01e9 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 631c47e2e1154f2741c555b91df1b8cb99294c6a |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 0ef8eaef5806c84db2334111d6f299c246a592bc |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< 94e06e12a376710587cfeea481b65e7c49747003 |
affected | ||
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88< a0de06d0da78a3db53de65dfd7452cc6d111f703 |
affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-97982
Vulnerability Information
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Vulnerability Title
net: ethernet: cortina: Fix budget accounting
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: cortina: Fix budget accounting
The gmac_rx() function returns the remaining NAPI budget, but its
caller treats the return value as the number of packets received. An
idle poll therefore reports a full budget and remains scheduled.
Return the number of received packets instead. Preserve the existing
free queue refill accounting by adding that count directly; continuing
to subtract it from the budget would invert the refill behavior.
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-2026-97982
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-97982 (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-2026-97982
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