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CVE-2026-98353— RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables

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，已修复以下漏洞： RDMA/erdma：为 QP 和 CQ 表使用 IRQ-safe XArray 辅助函数 从 EQ（错误队列）中断中执行的加锁 QP（工作分区）和 CQ（完成队列）查找操作，可能与创建路径（create-path）中对 XArray 的更新发生死锁。如果在中断处理过程中，创建路径持有普通的 xa_lock 锁，则查找操作将无限自旋，试图获取相同的锁。 为解决此问题，对所有的 QP 和 CQ 创建路径更新（包括 GSI QP 存储路径和错误处理路径）均使用 IRQ-safe

AI Predicted 7.5 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1053 · Scheduled Task/Job

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 4545f355654d044d35a31cd01cc46f491a8a7c36< 74d4085221a7ec5440996af199ccadfa75b9eb0e affected
98df2aee1459ee1c62c70cbe9b370d2a532aea36< 00baeade709fb66da647e8327e8398bb532e30f7 affected
610ef81797bb4f709e8675c1d8d093bb9ccdcbd8 affected
c0a83f29a24c7e7f8516630848ef6db4c174deed affected
05b8ca493dd02319bca93c640b259c2ba51ef321 affected
1fc9c1933959d2776a1ce7bf424251b8b5b586cd affected
6e32f84b63c054e09392153125d7202abab2d14b affected
ec987c0654651036dad6a42f7fa2a6d7c16a3687 affected
… +10 more rows
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I. Basic Information for CVE-2026-98353

Vulnerability Information
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Vulnerability Title
RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables Locked QP and CQ lookups from EQ interrupts can deadlock with create-path XArray updates. If an interrupt arrives while the create path holds the plain xa_lock, the lookup spins forever trying to acquire the same lock. Use IRQ-safe XArray helpers for all QP and CQ create-path updates, including the GSI QP store and error paths. Initialize both arrays with XA_FLAGS_LOCK_IRQ so sleeping allocations preserve interrupt state.
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 4545f355654d044d35a31cd01cc46f491a8a7c36 ~ 74d4085221a7ec5440996af199ccadfa75b9eb0e -
Linux Linux 7.3-rc1 -

II. Public POCs for CVE-2026-98353

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III. Intelligence Information for CVE-2026-98353

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Patches & Fixes for CVE-2026-98353 (2)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98281 7.8 HIGH futex: Also allocate private hash on vfork()
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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