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Vulnerability · Published Mar 25, 2024 · Assigned by Linux

CVE-2021-47166NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()

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 85.0% 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: NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce() The value of mirror->pg_bytes_written should only be updated after a successful attempt to flush out the requests on the list.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.6-1DEBIAN-CVE-2021-47166
Debian:13linux5.14.6-1DEBIAN-CVE-2021-47166
Debian:14linux5.14.6-1DEBIAN-CVE-2021-47166
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47166
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47166
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47166

Affected products (as reported)

VendorProductVersions
Linux Linux a7d42ddb3099727f58366fa006f850a219cce6c8 – before e8b8418ce14ae66ee55179901edd12191ab06a9ea7d42ddb3099727f58366fa006f850a219cce6c8 – before b291baae24f876acd5a5dd57d0bb2bbac8a68b0ca7d42ddb3099727f58366fa006f850a219cce6c8 – before c757c1f1e65d89429db1409429436cf40d47c008a7d42ddb3099727f58366fa006f850a219cce6c8 – before 40f139a6d50c232c0d1fd1c5e65a845c62db0edea7d42ddb3099727f58366fa006f850a219cce6c8 – before 785917316b25685c9b3a2a88f933139f2de75e33a7d42ddb3099727f58366fa006f850a219cce6c8 – before 7087db95c0a06ab201b8ebfac6a7ec1e34257997a7d42ddb3099727f58366fa006f850a219cce6c8 – before 2fe1cac336b55a1f79e603e9ce3552c3623e90eba7d42ddb3099727f58366fa006f850a219cce6c8 – before 0d0ea309357dea0d85a82815f02157eb7fcda39f
Linux Linux 4.0

References