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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2021-47265RDMA: Verify port when creating flow rule

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 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 90.6% 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: Verify port when creating flow rule Validate port value provided by the user and with that remove no longer needed validation by the driver. The missing check in the mlx5_ib driver could cause to the below oops. Call trace: _create_flow_rule+0x2d4/0xf28 [mlx5_ib] mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib] ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs] ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs] ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs] do_vfs_ioctl+0xd0/0xaf0 ksys_ioctl+0x84/0xb4 __arm64_sys_ioctl+0x28/0xc4 el0_svc_common.constprop.3+0xa4/0x254 el0_svc_handler+0x84/0xa0 el0_svc+0x10/0x26c Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.6-1DEBIAN-CVE-2021-47265
Debian:13linux5.14.6-1DEBIAN-CVE-2021-47265
Debian:14linux5.14.6-1DEBIAN-CVE-2021-47265
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47265
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47265
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47265

Affected products (as reported)

VendorProductVersions
Linux Linux 436f2ad05a0b65b1467ddf51bc68171c381bf844 – before 8dc1b0e0ca204596c50bcd159ee069ae0f998176436f2ad05a0b65b1467ddf51bc68171c381bf844 – before 2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e
Linux Linux 3.12

References