CVE-2022-50129

RDMA/srpt: Fix a use-after-free

State: Published
Severity: 7.0 High
Published: Jun 18, 2025
Updated: Aug 5, 2026
Reserved: Jun 18, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/srpt: Fix a use-after-free

Change the LIO port members inside struct srpt_port from regular members into pointers. Allocate the LIO port data structures from inside srpt_make_tport() and free these from inside srpt_make_tport(). Keep struct srpt_device as long as either an RDMA port or a LIO target port is associated with it. This patch decouples the lifetime of struct srpt_port (controlled by the RDMA core) and struct srpt_port_id (controlled by LIO). This patch fixes the following KASAN complaint:

BUG: KASAN: use-after-free in srpt_enable_tpg+0x31/0x70 [ib_srpt] Read of size 8 at addr ffff888141cc34b8 by task check/5093

Call Trace: <TASK> show_stack+0x4e/0x53 dump_stack_lvl+0x51/0x66 print_address_description.constprop.0.cold+0xea/0x41e print_report.cold+0x90/0x205 kasan_report+0xb9/0xf0 __asan_load8+0x69/0x90 srpt_enable_tpg+0x31/0x70 [ib_srpt] target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod] configfs_write_iter+0x18b/0x210 new_sync_write+0x1f2/0x2f0 vfs_write+0x3e3/0x540 ksys_write+0xbb/0x140 __x64_sys_write+0x42/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 </TASK>

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	a42d985bd5b234da8b61347a78dc3057bf7bb94d to before de95b52d9aabc979166aba81ccbe623aaf9c16a1Affected a42d985bd5b234da8b61347a78dc3057bf7bb94d to before e60d7e2462bf57273563c4e00dbfa79ee973b9e2Affected a42d985bd5b234da8b61347a78dc3057bf7bb94d to before 4ee8c39968a648d58b273582d4b021044a41ee5eAffected a42d985bd5b234da8b61347a78dc3057bf7bb94d to before 388326bb1c32fcd09371c1d494af71471ef3a04bAffected a42d985bd5b234da8b61347a78dc3057bf7bb94d to before b5605148e6ce36bb21020d49010b617693933128Affected
LinuxLinux	3.3Affected before 3.3Not affected 5.10.137 through 5.10.Not affected 5.15.61 through 5.15.Not affected 5.18.18 through 5.18.Not affected 5.19.2 through 5.19.Not affected 6.0 and laterNot affected

Product

Versions

LinuxLinux

a42d985bd5b234da8b61347a78dc3057bf7bb94d to before de95b52d9aabc979166aba81ccbe623aaf9c16a1Affected
a42d985bd5b234da8b61347a78dc3057bf7bb94d to before e60d7e2462bf57273563c4e00dbfa79ee973b9e2Affected
a42d985bd5b234da8b61347a78dc3057bf7bb94d to before 4ee8c39968a648d58b273582d4b021044a41ee5eAffected
a42d985bd5b234da8b61347a78dc3057bf7bb94d to before 388326bb1c32fcd09371c1d494af71471ef3a04bAffected
a42d985bd5b234da8b61347a78dc3057bf7bb94d to before b5605148e6ce36bb21020d49010b617693933128Affected

LinuxLinux

3.3Affected
before 3.3Not affected
5.10.137 through 5.10.*Not affected
5.15.61 through 5.15.*Not affected
5.18.18 through 5.18.*Not affected
5.19.2 through 5.19.*Not affected
6.0 and laterNot affected

References

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