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CVE-2026-23335— RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化响应结构中的保留字段，可能导致内核栈泄漏。

AI Predicted 5.5 Difficulty: Easy EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b48c24c2d710cf34810c555dcef883a3d35a9c08< 1f70df004fdd944653013ccc2e1dfd472a693b46 affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< 14b47c07c69930254f549a17ee245c80a65b1609 affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< 1b1fac4c7a3ab7f52e9cfb91e5c91216646ca4d8 affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< 2fd37450d271d74b3847baed284f9cfdf198c6f8 affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< cfe962216c164fe2b1c1fb6ac925a7413f5abc84 affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< c9bd0007c4bdb7806bbd323287e50f9cf467c51a affected
b48c24c2d710cf34810c555dcef883a3d35a9c08< 74586c6da9ea222a61c98394f2fc0a604748438c affected
5.14 affected
… +8 more rows
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I. Basic Information for CVE-2026-23335

Vulnerability Information
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Vulnerability Title
RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah() struct irdma_create_ah_resp { // 8 bytes, no padding __u32 ah_id; // offset 0 - SET (uresp.ah_id = ah->sc_ah.ah_info.ah_idx) __u8 rsvd[4]; // offset 4 - NEVER SET <- LEAK }; rsvd[4]: 4 bytes of stack memory leaked unconditionally. Only ah_id is assigned before ib_respond_udata(). The reserved members of the structure were not zeroed.
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化响应结构中的保留字段，可能导致内核栈泄漏。
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 b48c24c2d710cf34810c555dcef883a3d35a9c08 ~ 1f70df004fdd944653013ccc2e1dfd472a693b46 -
Linux Linux 5.14 -

II. Public POCs for CVE-2026-23335

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III. Intelligence Information for CVE-2026-23335

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Patches & Fixes for CVE-2026-23335 (6)

Same Patch Batch · Linux · 2026-03-25 · 116 CVEs total

CVE-2026-23395 8.8 HIGH Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ
CVE-2026-31788 8.2 HIGH xen/privcmd: restrict usage in unprivileged domU
CVE-2026-23280 7.8 HIGH accel/amdxdna: Prevent ubuf size overflow
CVE-2026-23317 7.8 HIGH drm/vmwgfx: Return the correct value in vmw_translate_ptr functions
CVE-2026-23393 7.8 HIGH bridge: cfm: Fix race condition in peer_mep deletion
CVE-2026-23392 7.8 HIGH netfilter: nf_tables: release flowtable after rcu grace period on error
CVE-2026-23391 7.8 HIGH netfilter: xt_CT: drop pending enqueued packets on template removal
CVE-2026-23340 7.8 HIGH net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs
CVE-2026-23306 7.8 HIGH scsi: pm8001: Fix use-after-free in pm8001_queue_command()
CVE-2026-23372 7.8 HIGH nfc: rawsock: cancel tx_work before socket teardown
CVE-2026-23288 7.8 HIGH accel/amdxdna: Fix out-of-bounds memset in command slot handling
CVE-2026-23378 7.8 HIGH net/sched: act_ife: Fix metalist update behavior
CVE-2026-23336 7.8 HIGH wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()
CVE-2026-23351 7.8 HIGH netfilter: nft_set_pipapo: split gc into unlink and reclaim phase
CVE-2026-23383 7.8 HIGH bpf, arm64: Force 8-byte alignment for JIT buffer to prevent atomic tearing
CVE-2026-23350 7.8 HIGH drm/xe/queue: Call fini on exec queue creation fail
CVE-2026-23364 7.4 HIGH ksmbd: Compare MACs in constant time
CVE-2026-23294 7.0 HIGH bpf: Fix race in devmap on PREEMPT_RT
CVE-2026-23358 drm/amdgpu: Fix error handling in slot reset
CVE-2026-23357 can: mcp251x: fix deadlock in error path of mcp251x_open

Showing top 20 of 116 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23335

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