CVE-2022-50543

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50543
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix mr->map double free rxe_mr_cleanup() which tries to free mr->map again will be called when rxe_mr_init_user() fails: CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x45/0x5d panic+0x19e/0x349 end_report.part.0+0x54/0x7c kasan_report.cold+0xa/0xf rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe] __rxe_cleanup+0x10a/0x1e0 [rdma_rxe] rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe] ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs] ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs] This issue was firstly exposed since commit b18c7da63fcb ("RDMA/rxe: Fix memory leak in error path code") and then we fixed it in commit 8ff5f5d9d8cf ("RDMA/rxe: Prevent double freeing rxe_map_set()") but this fix was reverted together at last by commit 1e75550648da (Revert "RDMA/rxe: Create duplicate mapping tables for FMRs") Simply let rxe_mr_cleanup() always handle freeing the mr->map once it is successfully allocated.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d Patch
https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268 Patch
https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

04 Feb 2026, 18:56

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d - () https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d - Patch
References () https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268 - () https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268 - Patch
References () https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac - () https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac - Patch
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-415

07 Oct 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-10-07 16:15

Updated : 2026-02-04 18:56

NVD link : CVE-2022-50543

Mitre link : CVE-2022-50543

CVE.ORG link : CVE-2022-50543

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-415

Double Free