In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perfUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-livepatch-4.14.198-152.320Upgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade python-perfUpgrade kernel-headersUpgrade python-perf-debuginfo | Oct 2, 2020 | Dec 8, 2019 |
| Amazon_linux | — | Upgrade kernel | Oct 28, 2020 | Dec 8, 2019 |
| Debian | — | Upgrade linux | Sep 28, 2020 | Dec 8, 2019 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 11, 2020 | Dec 10, 2019 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 8, 2019 |
| Ubuntu | — | Upgrade linux-image-kvmUpgrade linux-image-4.15.0-121-genericUpgrade linux-image-4.15.0-1099-azureUpgrade linux-image-4.15.0-121-lowlatencyUpgrade linux-image-4.15.0-1099-oemUpgrade linux-image-azureUpgrade linux-image-gke-4.15Upgrade linux-image-4.15.0-1089-snapdragonUpgrade linux-image-generic-lpae-hwe-16.04Upgrade linux-image-4.15.0-1072-gkeUpgrade linux-image-4.15.0-1057-oracleUpgrade linux-image-genericUpgrade linux-image-4.15.0-120-generic-lpaeUpgrade linux-image-4.15.0-1086-awsUpgrade linux-image-generic-lpaeUpgrade linux-image-4.15.0-121-generic-lpaeUpgrade linux-image-aws-hweUpgrade linux-image-4.15.0-120-genericUpgrade linux-image-4.15.0-1077-kvmUpgrade linux-image-lowlatencyUpgrade linux-image-4.15.0-1098-azureUpgrade linux-image-gcpUpgrade linux-image-oemUpgrade linux-image-raspi2Upgrade linux-image-aws-lts-18.04Upgrade linux-image-gkeUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-4.15.0-1085-awsUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-gcp-lts-18.04Upgrade linux-image-4.15.0-1056-oracleUpgrade linux-image-oracleUpgrade linux-image-virtualUpgrade linux-image-snapdragonUpgrade linux-image-4.15.0-120-lowlatencyUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-4.15.0-1073-raspi2Upgrade linux-image-azure-lts-18.04Upgrade linux-image-4.15.0-1086-gcpUpgrade linux-image-oracle-lts-18.04 | Oct 14, 2020 | Dec 8, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 8, 2019 |
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