High · 7.8 CVE-2021-47351 EUVD-2021-34356GHSA-2jpv-mgvf-9659

ubifs: Fix races between xattr_{set|get} and listxattr operations

Published May 21, 2024 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-kvm Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lts-xenial Package: linux-nvidia-6.2 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

ubifs: Fix races between xattr_{set|get} and listxattr operations

UBIFS may occur some problems with concurrent xattr_{set|get} and
listxattr operations, such as assertion failure, memory corruption,
stale xattr value[1].

Fix it by importing a new rw-lock in @ubifs_inode to serilize write
operations on xattr, concurrent read operations are still effective,
just like ext4.

[1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	2.6.27	5.4.133

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	5.14.6-1	—
Debian 13	linux	5.14.6-1	—
Debian 12	linux	5.14.6-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 24.04 LTS	linux-raspi-realtime	No fix yet	—
Ubuntu 22.04 LTS	linux-riscv +22	No fix yet	—
Ubuntu 20.04 LTS	linux	5.4.0-84.94	—
Ubuntu 20.04 LTS	linux-aws	5.4.0-1056.59	—
Ubuntu 20.04 LTS	linux-azure	5.4.0-1058.60	—
Ubuntu 20.04 LTS	linux-bluefield	5.4.0-1019.22	—
Ubuntu 20.04 LTS	linux-gcp	5.4.0-1052.56	—
Ubuntu 20.04 LTS	linux-gke +26	No fix yet	—
Ubuntu 20.04 LTS	linux-gkeop	5.4.0-1023.24	—
Ubuntu 20.04 LTS	linux-kvm	5.4.0-1046.48	—
Ubuntu 20.04 LTS	linux-oracle	5.4.0-1054.58	—
Ubuntu 20.04 LTS	linux-raspi	5.4.0-1043.47	—
Ubuntu 18.04 LTS	linux-aws-5.4	5.4.0-1056.59~18.04.1	—
Ubuntu 18.04 LTS	linux-azure-5.4	5.4.0-1058.60~18.04.1	—
Ubuntu 18.04 LTS	linux-gcp +14	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp-5.4	5.4.0-1052.56~18.04.1	—
Ubuntu 18.04 LTS	linux-hwe-5.4	5.4.0-84.94~18.04.1	—
Ubuntu 18.04 LTS	linux-oracle-5.4	5.4.0-1054.58~18.04.1	—
Ubuntu 18.04 LTS	linux-raspi-5.4	5.4.0-1043.47~18.04.1	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—

Show 9 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu Pro FIPS 20.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS 18.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS 16.04 LTS	linux-fips	No fix yet	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-aws-fips	5.4.0-1069.73+fips2	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-azure-fips	5.4.0-1073.76+fips1	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-fips	5.4.0-1033.38	—
Ubuntu Pro FIPS-updates 20.04 LTS	linux-gcp-fips	5.4.0-1067.71~20.04.1	—
Ubuntu Pro FIPS-updates 18.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro FIPS-updates 16.04 LTS	linux-fips	No fix yet	—
Ubuntu Pro 18.04 LTS	linux +5	No fix yet	—
Ubuntu Pro 16.04 LTS	linux +7	No fix yet	—
Ubuntu Pro 14.04 LTS	linux +3	No fix yet	—

References