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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2021-47260NFS: Fix a potential NULL dereference in nfs_get_client()

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 85.3% 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: NFS: Fix a potential NULL dereference in nfs_get_client() None of the callers are expecting NULL returns from nfs_get_client() so this code will lead to an Oops. It's better to return an error pointer. I expect that this is dead code so hopefully no one is affected.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.46-1DEBIAN-CVE-2021-47260
Debian:13linux5.10.46-1DEBIAN-CVE-2021-47260
Debian:14linux5.10.46-1DEBIAN-CVE-2021-47260
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47260
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47260
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47260

Affected products (as reported)

VendorProductVersions
Linux Linux 31434f496abb9f3410b10f541462fe58613dd3ad – before fab8bfdfb4aac9e4e8363666333adfdf21e8910631434f496abb9f3410b10f541462fe58613dd3ad – before a979e601000982a3ca693171a6d4dffc47f8ad0031434f496abb9f3410b10f541462fe58613dd3ad – before 634f17ff1d59905eb3b4bbbc00805961d08beaee31434f496abb9f3410b10f541462fe58613dd3ad – before 4b380a7d84ef2ce3f4f5bec5d8706ed937ac650231434f496abb9f3410b10f541462fe58613dd3ad – before 0057ecef9f324007c0ba5fcca4ddd131178ce78b31434f496abb9f3410b10f541462fe58613dd3ad – before 279ad78a00f8b9c5ff24171a59297187a3bd44b731434f496abb9f3410b10f541462fe58613dd3ad – before 58ddf61f10b8f9b7b1341644bfee2f1c6508d4e131434f496abb9f3410b10f541462fe58613dd3ad – before 09226e8303beeec10f2ff844d2e46d1371dc58e0
Linux Linux 3.17

References