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Vulnerability · Published Oct 7, 2025 · Assigned by Linux

CVE-2022-50543RDMA/rxe: Fix mr->map double free

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 94.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-abi-stablelists4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-core4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-cross-headers4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-debug4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-debug-core4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-debug-devel4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-debug-modules4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-devel4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-doc4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-headers4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-modules4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-modules-extra4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-rt4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-core4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-debug4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-debug-core4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-devel4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-modules4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.89.1.rt7.430.el8_10ALSA-2025:22800
AlmaLinux:8kernel-tools4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-tools-libs4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-zfcpdump4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8perf4.18.0-553.89.1.el8_10ALSA-2025:22801
AlmaLinux:8python3-perf4.18.0-553.89.1.el8_10ALSA-2025:22801
Debian:12linux6.1.4-1DEBIAN-CVE-2022-50543
Debian:13linux6.1.4-1DEBIAN-CVE-2022-50543
Debian:14linux6.1.4-1DEBIAN-CVE-2022-50543
Rocky Linux:8kernel0:4.18.0-553.89.1.el8_10RLSA-2025:22801
Rocky Linux:8kernel-rt0:4.18.0-553.89.1.rt7.430.el8_10RLSA-2025:22800
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50543
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50543
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50543

Affected products (as reported)

VendorProductVersions
Linux Linux 1e75550648da1fa1cd1969e7597355de8fe8caf6 – before 6ce577f09013206e36e674cd27da3707b22782681e75550648da1fa1cd1969e7597355de8fe8caf6 – before 06f73568f553b5be6ba7f6fe274d333ea29fc46d1e75550648da1fa1cd1969e7597355de8fe8caf6 – before 7d984dac8f6bf4ebd3398af82b357e1d181ecaace004a35e8148ad9fc438b0479884641acf3828965.19.4 – before 5.20
Linux Linux 6.0

References