CVE-2026-74475— vxlan: use neigh_ha_snapshot() in route_shortcircuit()
Possible ATT&CK Techniques 1AI
T1201 · Password Policy DiscoveryAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e4f67addf158f98f8197e08974966b18480dc751< 32a9590a8d30426e3db63e6b20893e47e02576c0 | affected |
e4f67addf158f98f8197e08974966b18480dc751< d0993fc053f29e15cc7c9fe2029df3882a2ab5ab | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< 87210054bad82bbae6f483a742dc45722fb47a6b | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0 | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< ec341bb76d77b4c2948764375ee6bfeef4bb41c3 | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< ff89415d34c3ab9f5312316423122e664ed3524f | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< 05f2987f73daa05333fd713d05546142f9f7c5f0 | affected | ||
e4f67addf158f98f8197e08974966b18480dc751< 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-74475
Vulnerability Information
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Vulnerability Title
vxlan: use neigh_ha_snapshot() in route_shortcircuit()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vxlan: use neigh_ha_snapshot() in route_shortcircuit() The neighbour hardware address n->ha can be updated asynchronously by the neighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without holding the seqlock loop can lead to torn reads or reading a partially updated MAC address. Use neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under read_seqbegin()/read_seqretry() lock protection before using it. Note that arp_reduce() and neigh_reduce() seem to have the same issue left for future patches.
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:L
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 3.8版本存在安全漏洞，该漏洞源于在route_shortcircuit()函数中读取邻居硬件地址n->ha时未持有seqlock锁，可能导致撕裂读取或读取到部分更新的MAC地址。
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
II. Public POCs for CVE-2026-74475
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-74475 (7)
Same Patch Batch · Linux · 2026-08-15 · 845 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-2026-72421 | 10.0 CRITICAL | ipv4: fib: Don't ignore error route in local/main tables. |
| CVE-2026-72408 | 10.0 CRITICAL | geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint |
| CVE-2026-72407 | 10.0 CRITICAL | geneve: validate inner network offset in geneve_gro_complete() |
| CVE-2026-74309 | 10.0 CRITICAL | vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler |
| CVE-2026-72493 | 9.9 CRITICAL | net: serialize netif_running() check in enqueue_to_backlog() |
| CVE-2026-74427 | 9.8 CRITICAL | afs: Fix netns teardown to cancel the preallocation charger |
| 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-2026-72299 | 9.8 CRITICAL | tipc: restrict socket queue dumps in enqueue tracepoints |
| CVE-2026-74434 | 9.8 CRITICAL | rxrpc: Don't move a peeked OOB message onto the pending queue |
| CVE-2026-74433 | 9.8 CRITICAL | rxrpc: Fix UAF in rxgk_issue_challenge() |
| CVE-2026-72473 | 9.8 CRITICAL | xprtrdma: Decouple req recycling from RPC completion |
| CVE-2026-72472 | 9.8 CRITICAL | nfs: use nfsi->rwsem to protect traversal of the file lock list |
| CVE-2026-74545 | 9.8 CRITICAL | rtase: fix double free of multi-frag skb on DMA map failure |
| CVE-2026-72046 | 9.8 CRITICAL | gve: fix header buffer corruption with header-split and HW-GRO |
| CVE-2026-72466 | 9.8 CRITICAL | xprtrdma: Fix bcall rep leak and unbounded peek |
| CVE-2026-72201 | 9.8 CRITICAL | ntfs: validate index entries on reading |
Showing top 20 of 845 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2026-74475
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