CVE-2026-98353

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4545f355654d044d35a31cd01cc46f491a8a7c36 < 74d4085221a7ec5440996af199ccadfa75b9eb0eaffected
LinuxLinux98df2aee1459ee1c62c70cbe9b370d2a532aea36 < 00baeade709fb66da647e8327e8398bb532e30f7affected
LinuxLinux610ef81797bb4f709e8675c1d8d093bb9ccdcbd8affected
LinuxLinuxc0a83f29a24c7e7f8516630848ef6db4c174deedaffected
LinuxLinux05b8ca493dd02319bca93c640b259c2ba51ef321affected
LinuxLinux1fc9c1933959d2776a1ce7bf424251b8b5b586cdaffected
LinuxLinux6e32f84b63c054e09392153125d7202abab2d14baffected
LinuxLinuxec987c0654651036dad6a42f7fa2a6d7c16a3687affected
LinuxLinuxc92686867638cda954fdb2bdbac8a75e3aa6eaaeaffected
LinuxLinux7.2.6 < 7.2.8affected
LinuxLinux6.1.188 < 6.2affected
LinuxLinux6.6.157 < 6.7affected
LinuxLinux6.12.110 < 6.13affected
LinuxLinux6.18.52 < 6.19affected
LinuxLinux7.3-rc1affected
LinuxLinux0 < 7.3-rc1unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References