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Vulnerability · Published May 24, 2024 · Assigned by Linux

CVE-2021-47571staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()

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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 88.0% 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: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.15.15-1DEBIAN-CVE-2021-47571
Debian:13linux5.15.15-1DEBIAN-CVE-2021-47571
Debian:14linux5.15.15-1DEBIAN-CVE-2021-47571
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47571
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47571
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47571

Affected products (as reported)

VendorProductVersions
Linux Linux 66898177e7e5486dc77a4ba742efa4e2e9e900a4 – before d43aecb694b10db9a4228ce2d38b5ae8de37444366898177e7e5486dc77a4ba742efa4e2e9e900a4 – before 9186680382934b0e7529d3d70dcc0a21d087683b66898177e7e5486dc77a4ba742efa4e2e9e900a4 – before c0ef0e75a858cbd8618b473f22fbca36106dcf8266898177e7e5486dc77a4ba742efa4e2e9e900a4 – before bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef66898177e7e5486dc77a4ba742efa4e2e9e900a4 – before 2e1ec01af2c7139c6a600bbfaea1a018b35094b666898177e7e5486dc77a4ba742efa4e2e9e900a4 – before 8d0163cec7de995f9eb9c3128c83fb84f0cb1c6466898177e7e5486dc77a4ba742efa4e2e9e900a4 – before e27ee2f607fe6a9b923ef1fc65461c0613c9759466898177e7e5486dc77a4ba742efa4e2e9e900a4 – before b535917c51acc97fb0761b1edec85f1f3d02bda4
Linux Linux 3.2

References