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CVE-2026-74309— vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler

CVSS 10.0 · Critical EPSS 0.45% · P37

Possible ATT&CK Techniques 1AI

T1055 · Process Injection

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinux26f8ce06af6475b33b0bc60261e9f5027f9af58f< 3ef0cfa77a3d526591be069850d186c255e3f0ccaffected
26f8ce06af6475b33b0bc60261e9f5027f9af58f< c6c7eae5de798442987619434171ac886035d57caffected
26f8ce06af6475b33b0bc60261e9f5027f9af58f< 0d21a1d6375a05274291e32c1ab7cd57dbb69513affected
6.14affected
< 6.14unaffected
6.18.40≤ 6.18.*unaffected
7.1.5≤ 7.1.*unaffected
7.2≤ *unaffected
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I. Basic Information for CVE-2026-74309

Vulnerability Information
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Vulnerability Title
vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 6.14版本存在安全漏洞，该漏洞源于中断处理程序中IRQ到ring映射错误，可能导致不正确的ring索引。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 26f8ce06af6475b33b0bc60261e9f5027f9af58f ~ 3ef0cfa77a3d526591be069850d186c255e3f0cc -
LinuxLinux 6.14 -

II. Public POCs for CVE-2026-74309

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III. Intelligence Information for CVE-2026-74309

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Patches & Fixes for CVE-2026-74309 (3)

Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-724639.8 CRITICALxfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-722489.8 CRITICALnetfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-723819.8 CRITICALksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-724779.8 CRITICALfs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion
CVE-2026-724729.8 CRITICALnfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-721309.8 CRITICALnvmet-auth: reject short AUTH_RECEIVE buffers
CVE-2026-724519.8 CRITICALxfrm: Fix xfrm state cache insertion race
CVE-2026-721379.8 CRITICALxfrm: nat_keepalive: avoid double free on send error
CVE-2026-743769.8 CRITICALmd/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-722269.8 CRITICALbatman-adv: tt: prevent TVLV OOB check overflow
CVE-2026-721299.8 CRITICALnvmet-rdma: handle inline data with a nonzero offset
CVE-2026-721399.8 CRITICALtcp: defer md5sig_info kfree past RCU grace period in tcp_connect

Showing top 20 of 846 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74309

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