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CVE-2026-74710— xsk: require at least 16 bytes of TX metadata

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，以下漏洞已得到修复： xsk：要求至少包含 16 字节的 TX 元数据 AF_XDP 允许接收长度小至 8 字节的 TX（传输）元数据，但每个支持的请求都需要标志位以及至少一个 8 字节长的请求字段。过短的元数据长度还可能导致内核读取超出已注册内存区域的数据，从而引发安全问题。 为确保与那些不使用启动时元数据的应用程序保持兼容，现要求元数据长度至少为 16 字节，而不是 sizeof(struct xsk_tx_metadata) 的大小。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 341ac980eab90ac1f6c22ee9f9da83ed9604d899< 21b8536aee819792f1b4b38b9aacf2a073025d49 affected
341ac980eab90ac1f6c22ee9f9da83ed9604d899< 642c6e73fce17fdca93a5793c4d22359fda866d7 affected
341ac980eab90ac1f6c22ee9f9da83ed9604d899< cfb9d2976b277e554e28c165e3eff4b4a8ea10bd affected
341ac980eab90ac1f6c22ee9f9da83ed9604d899< 1bb30b181d9f0484e141f8411e15ed906d5c6780 affected
6.8 affected
< 6.8 unaffected
6.12.104≤ 6.12.* unaffected
6.18.45≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-74710

Vulnerability Information
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Vulnerability Title
xsk: require at least 16 bytes of TX metadata
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xsk: require at least 16 bytes of TX metadata AF_XDP accepts a TX metadata length as small as eight bytes, but every supported request needs the flags plus at least one eight-byte request field. Such short metadata also lets the kernel read beyond the registered area. Require 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve compatibility with applications that do not use launch-time metadata.
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 341ac980eab90ac1f6c22ee9f9da83ed9604d899 ~ 21b8536aee819792f1b4b38b9aacf2a073025d49 -
Linux Linux 6.8 -

II. Public POCs for CVE-2026-74710

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III. Intelligence Information for CVE-2026-74710

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Patches & Fixes for CVE-2026-74710 (3)

Same Patch Batch · Linux · 2026-08-22 · 150 CVEs total

CVE-2026-74638 drm/v3d: Serialize the scheduler timeout handlers
CVE-2026-74621 net/sched: act_ct: fix sk_buff leak when the header checks reject a packet
CVE-2026-74622 net: atlantic: free RX pages of consumed but not refilled buffers
CVE-2026-74623 net: atlantic: free stranded TX buffers on ring deinit
CVE-2026-74624 netfilter: nf_conntrack: defer invalid log until after unlock
CVE-2026-74625 netfilter: bridge: release template ct on non-IP path
CVE-2026-74627 net: devmem: prevent net-iov / page mixing
CVE-2026-74626 NTB: ntb_netdev: Preserve RX queue depth on allocation failure
CVE-2026-74628 net/x25: fix use-after-free of the socket by its timers
CVE-2026-74629 net/dibs: Correct freeing of dmb_clientid_arr
CVE-2026-74631 net: smc: fix splice entry lifetime imbalance in smc_rx_splice
CVE-2026-74630 ipv6: prevent in6_dev_get() from resurrecting inet6_dev
CVE-2026-74632 mm/huge_memory: fix huge_zero_pfn race
CVE-2026-74633 tracing: Fix NULL pointer dereference in module event cache removal
CVE-2026-74634 ring-buffer: Prevent subbuf order change when resizing is disabled
CVE-2026-74635 fbdev: bitblit: bound-check glyph index in bit_cursor()
CVE-2026-74636 tracing: Fix race between update_event_fields and, event_define_fields
CVE-2026-74637 perf/core: Fix group leader use-after-free after sibling detach
CVE-2026-74639 ALSA: us144mkii: re-anchor capture URBs on resubmission
CVE-2026-74650 staging: rtl8723bs: fix OOB read in WMM_param_handler()

Showing top 20 of 150 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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