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CVE-2026-97973— net: macb: destroy the phylink instance on the probe error path

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： 网络子系统 macb 驱动：在探测（probe）失败路径上销毁 phylink 实例 函数在两个成功路径上都会创建一个 phylink 实例，但在探测失败的回退（unwind）过程中，仅释放了网络设备（netdev），却未销毁该 phylink 实例，从而导致当 或 失败时，出现实例泄漏。 在 标签处销毁该实例。由于该标签仅在 成功执行之后才会被跳转至此，因此在此处 指针是有效的。

EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< 0112aa02c7847314be599d68783d50c7e228a694 affected
7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< c1de1e7b51ab2531f564b39b51998c3d71caccd7 affected
7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< 23b6a44ffea1c54a4232aa86ee470b21422a8cc5 affected
7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< e92a45b872b035c79acde8dd0da096a72b61ff2f affected
7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< 8558e3195664113c14a4d8fcf221b3caff41fed1 affected
7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0< 7d059f390750152b9bd69df934198651b94fc26d affected
5.5 affected
< 5.5 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-97973

Vulnerability Information
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Vulnerability Title
net: macb: destroy the phylink instance on the probe error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there.
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 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 ~ 0112aa02c7847314be599d68783d50c7e228a694 -
Linux Linux 5.5 -

II. Public POCs for CVE-2026-97973

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III. Intelligence Information for CVE-2026-97973

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Patches & Fixes for CVE-2026-97973 (6)

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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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