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Vulnerability · Published May 24, 2024 · Assigned by Linux

CVE-2021-47518nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done

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 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 84.6% 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: fix potential NULL pointer deref in nfc_genl_dump_ses_done The done() netlink callback nfc_genl_dump_ses_done() should check if received argument is non-NULL, because its allocation could fail earlier in dumpit() (nfc_genl_dump_ses()).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.15.15-1DEBIAN-CVE-2021-47518
Debian:13linux5.15.15-1DEBIAN-CVE-2021-47518
Debian:14linux5.15.15-1DEBIAN-CVE-2021-47518
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47518
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47518
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47518

Affected products (as reported)

VendorProductVersions
Linux Linux ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 87cdb8789c38e44ae5454aafe277997c950d00edac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 69bb79a8f5bb9f436b6f1434ca9742591b7bbe18ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 811a7576747760bcaf60502f096d1e6e91d566faac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 3b861a40325eac9c4c13b6c53874ad90617e944dac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 48fcd08fdbe05e35b650a252ec2a2d96057a1c7aac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 83ea620a1be840bf05089a5061fb8323ca42f38cac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before fae9705d281091254d4a81fa2da9d22346097dcaac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 – before 4cd8371a234d051f9c9557fcbb1f8c523b1c0d10
Linux Linux 3.12

References