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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2021-47310net: ti: fix UAF in tlan_remove_one

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 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 83.2% 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: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-abi-stablelists4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-core4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-cross-headers4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-debug4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-debug-core4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-debug-devel4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-debug-modules4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-devel4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-doc4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-headers4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-modules4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-modules-extra4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-rt4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-core4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug-core4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug-kvm4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-devel4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-kvm4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-modules4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.8.1.rt7.349.el8_10ALSA-2024:4352
AlmaLinux:8kernel-tools4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-tools-libs4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-zfcpdump4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8perf4.18.0-553.8.1.el8_10ALSA-2024:4211
AlmaLinux:8python3-perf4.18.0-553.8.1.el8_10ALSA-2024:4211
Debian:12linux5.14.6-1DEBIAN-CVE-2021-47310
Debian:13linux5.14.6-1DEBIAN-CVE-2021-47310
Debian:14linux5.14.6-1DEBIAN-CVE-2021-47310
Rocky Linux:8kernel0:4.18.0-553.8.1.el8_10RLSA-2024:4211
Rocky Linux:8kernel-rt0:4.18.0-553.8.1.rt7.349.el8_10RLSA-2024:4352
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47310
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47310
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47310

Affected products (as reported)

VendorProductVersions
Linux Linux 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before a18a8d9cfbb112ad72e625372849adc3986fd6bf1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before c263ae8c7e4c482387de5e6c89e213f8173fe8b61e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before 0538b0ab7d2c396e385694228c7cdcd2d2c514e91e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before a0a817b2d308fac090a05cbbe80988e073ac51931e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before b7e5563f2a7862a9e4796abb9908b092f677e3c11e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before f2a062fcfe1d6f1b0a86fa76ae21c277d65f44051e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before 93efab0ef2a607fff9166d447c4035f98b5db3421e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa – before 0336f8ffece62f882ab3012820965a786a983f70
Linux Linux 3.10

References