CVE-2022-50543

HIGH EPSS 4.4%
Published Oct 7, 20258mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 7, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥5.19.4  –  <6.0.16
linuxlinux_kernel*≥6.1  –  <6.1.2

References 3

  • git.kernel.org https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac
    Patch