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CVE-2026-74288— net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于在fib_rules_dump()中对正在销毁的fib_rule调用refcount_inc()，可能导致引用计数异常。

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 5d7bfd141924a5ece21eb612ad3c56612f041c1e< 0f929b59f4cd0e05bb1ecefe12b77e85911d4be2 affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< 4b7ae30c81c2ee10a644749a3704a5c797ccc308 affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< 2dfdc210d240bd48bb2ea746430b02b5571b6db9 affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< a7ef30753353ba6a95d693b1863a0214222a199a affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< 1fbc6c6efe78f4454a51afa0587efb6826f60f00 affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< bb4a5b3c91af3c8d705bb2e9f6f8069a70db26fc affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< 3af0bc1bd9039e2e50abf3e2d7fee411f38bce4e affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e< 2821e85c058f81c9948a2fb1a634f7b47457d51c affected
… +10 more rows
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I. Basic Information for CVE-2026-74288

Vulnerability Information
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Vulnerability Title
net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: fib_rules: Don't dump dying fib_rule in fib_rules_dump(). rocker_router_fib_event() calls fib_rule_get() during RCU dump. If the fib_rule is dying, refcount_inc() will complain about it. Let's call refcount_inc_not_zero() in fib_rules_dump().
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于在fib_rules_dump()中对正在销毁的fib_rule调用refcount_inc()，可能导致引用计数异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 5d7bfd141924a5ece21eb612ad3c56612f041c1e ~ 0f929b59f4cd0e05bb1ecefe12b77e85911d4be2 -
Linux Linux 4.12 -

II. Public POCs for CVE-2026-74288

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III. Intelligence Information for CVE-2026-74288

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Patches & Fixes for CVE-2026-74288 (8)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72220 9.8 CRITICAL sunrpc: harden rq_procinfo lifecycle to prevent double-free
CVE-2026-72217 9.8 CRITICAL SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72208 9.8 CRITICAL ntfs: add bounds check before accessing EA entries
CVE-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
CVE-2026-74267 9.8 CRITICAL net/sched: sch_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring q
CVE-2026-72207 9.8 CRITICAL ntfs: not change 0-byte $DATA attribute to non-resident

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74288

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