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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2021-47345RDMA/cma: Fix rdma_resolve_route() memory leak

Medium 5.5

In plain English

A medium-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 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 82.4% 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/cma: Fix rdma_resolve_route() memory leak Fix a memory leak when "mda_resolve_route() is called more than once on the same "rdma_cm_id". This is possible if cma_query_handler() triggers the RDMA_CM_EVENT_ROUTE_ERROR flow which puts the state machine back and allows rdma_resolve_route() to be called again.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.6-1DEBIAN-CVE-2021-47345
Debian:13linux5.14.6-1DEBIAN-CVE-2021-47345
Debian:14linux5.14.6-1DEBIAN-CVE-2021-47345
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47345
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47345
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47345

Affected products (as reported)

VendorProductVersions
Linux Linux e51060f08a61965c4dd91516d82fe90617152590 – before 40b613db3a95bc27998e4097d74c2f7e5d083a0be51060f08a61965c4dd91516d82fe90617152590 – before e2da8ce2a9543f3ca5c93369bd1fe6eeb572101ae51060f08a61965c4dd91516d82fe90617152590 – before e4e062da082a199357ba4911145f331d40139ad8e51060f08a61965c4dd91516d82fe90617152590 – before 4893c938f2a140a74be91779e45e4a7fa111198fe51060f08a61965c4dd91516d82fe90617152590 – before 032c68b4f5be128a2167f35b558b7cec88fe4972e51060f08a61965c4dd91516d82fe90617152590 – before 3d08b5917984f737f32d5bee9737b9075c3895c6e51060f08a61965c4dd91516d82fe90617152590 – before f4f553d67236145fa5fd203ed7b35b9377e19939e51060f08a61965c4dd91516d82fe90617152590 – before 07583ba2e2d8947c3d365d97608cb436510885ac
Linux Linux 2.6.18

References