In the Linux kernel, the following vulnerability has been resolved:
fuse: re-lock request before replacing page cache folio
fuse_try_move_folio() unlocks the request on entry but does not re-lock it on the success path. This means fuse_chan_abort() can end the request and free the fuse_io_args (eg fuse_readpages_end()) while the subsequent copy chain logic after fuse_try_move_folio() accesses the fuse_io_args, leading to use-after-free issues.
Fix this by calling lock_request() before replace_page_cache_folio(). This ensures the request is locked on the success path which will prevent the fuse_io_args from being freed while the later copying logic runs, and also ensures that the ap->folios[i]->mapping is never null since ap->folios[i] will always point to the newfolio after replace_page_cache_folio().
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-toolsUpgrade kernel-livepatch-5.15.211-149.249Upgrade kernel-develUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade perf | Aug 2, 2026 | Aug 2, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-develUpgrade kernel6.18Upgrade kernel6.18-headersUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-develUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-tools-develUpgrade kernel6.18-toolsUpgrade kernel6.12-tools-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel-livepatch-6.12.95-124.187Upgrade kernel6.12-headersUpgrade python3-perf6.12Upgrade kernel-livepatch-6.18.38-73.137Upgrade kernel6.18-modules-extraUpgrade python3-perf6.18Upgrade bpftool6.18-debuginfoUpgrade perf6.18-debuginfoUpgrade perf6.12Upgrade bpftool6.12Upgrade kernel6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.12-debuginfoUpgrade kernel6.12-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade perf6.18Upgrade kernel6.12-toolsUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade microvm-kernel6.18Upgrade kernel6.18-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade bpftool6.18Upgrade kernel6.12-debuginfo-common-aarch64 | Aug 10, 2026 | Jul 19, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 20, 2026 | Jul 20, 2026 |
| Redhat_linux | — | No solution exists | Jul 22, 2026 | Jul 19, 2026 |
| Ubuntu | — | Upgrade linux-image-awsUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-oracle-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-gcpUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-aws-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidia-64kUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-virtualUpgrade linux-image-oracle-7.0Upgrade linux-image-ibmUpgrade linux-image-virtual-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-oracleUpgrade linux-image-oem-26.04bUpgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oem-7.0Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-oem-26.04Upgrade linux-image-raspiUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-gke-64kUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-genericUpgrade linux-image-realtime-7.0Upgrade linux-image-realtimeUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-nvidia-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-nvidiaUpgrade linux-image-gke-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-ibm-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-nvidia-bosUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-gkeUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-oem-26.04aUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-azureUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-generic-64k | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Jul 19, 2026 |
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