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Vulnerability · Published May 22, 2024 · Assigned by Linux

CVE-2021-47442NFC: digital: fix possible memory leak in digital_in_send_sdd_req()

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 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 86.6% 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: NFC: digital: fix possible memory leak in digital_in_send_sdd_req() 'skb' is allocated in digital_in_send_sdd_req(), but not free when digital_in_send_cmd() failed, which will cause memory leak. Fix it by freeing 'skb' if digital_in_send_cmd() return failed.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.16-1DEBIAN-CVE-2021-47442
Debian:13linux5.14.16-1DEBIAN-CVE-2021-47442
Debian:14linux5.14.16-1DEBIAN-CVE-2021-47442
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47442
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47442
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47442

Affected products (as reported)

VendorProductVersions
Linux Linux 2c66daecc4092e6049673c281b2e6f0d5e59a94c – before 74569c78aa84f8c958f1334b465bc530906ec99a2c66daecc4092e6049673c281b2e6f0d5e59a94c – before 88c890b0b9a1fb9fcd01c61ada515e8b636c34f92c66daecc4092e6049673c281b2e6f0d5e59a94c – before fcce6e5255474ca33c27dda0cdf9bf50872788732c66daecc4092e6049673c281b2e6f0d5e59a94c – before 071bdef36391958c89af5fa2172f691b31baa2122c66daecc4092e6049673c281b2e6f0d5e59a94c – before 2bde4aca56db9fe25405d39ddb062531493a65db2c66daecc4092e6049673c281b2e6f0d5e59a94c – before 50cb95487c265187289810addec5093d4fed83292c66daecc4092e6049673c281b2e6f0d5e59a94c – before 6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e862c66daecc4092e6049673c281b2e6f0d5e59a94c – before 291c932fc3692e4d211a445ba8aa35663831bac7
Linux Linux 3.13

References