In the Linux kernel, the following vulnerability has been resolved:
fuse: fix uninit-value in fuse_dentry_revalidate()
fuse_dentry_revalidate() may be called with a dentry that didn't had ->d_time initialised. The issue was found with KMSAN, where lookup_open() calls __d_alloc(), followed by d_revalidate(), as shown below:
===================================================== BUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394 fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394 d_revalidate fs/namei.c:1030 [inline] lookup_open fs/namei.c:4405 [inline] open_last_lookups fs/namei.c:4583 [inline] path_openat+0x1614/0x64c0 fs/namei.c:4827 do_file_open+0x2aa/0x680 fs/namei.c:4859 [...]
Uninit was created at: slab_post_alloc_hook mm/slub.c:4466 [inline] slab_alloc_node mm/slub.c:4788 [inline] kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4807 __d_alloc+0x55/0xa00 fs/dcache.c:1740 d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604 lookup_open fs/namei.c:4398 [inline] open_last_lookups fs/namei.c:4583 [inline] path_openat+0x135f/0x64c0 fs/namei.c:4827 do_file_open+0x2aa/0x680 fs/namei.c:4859 [...] =====================================================
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade bpftool6.18-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel-livepatch-6.18.35-68.127Upgrade python3-perf6.18-debuginfoUpgrade python3-perf6.18Upgrade bpftool6.18Upgrade perf6.18-debuginfoUpgrade perf6.18Upgrade kernel6.18-tools-develUpgrade microvm-kernel6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-debuginfoUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-develUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-modules-extraUpgrade kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.18-headers | Jul 13, 2026 | Jun 26, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 26, 2026 |
| Ubuntu | — | Upgrade linux-image-7.0.0-1003-gkeUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-ibmUpgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-28-realtimeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-7.0Upgrade linux-image-generic-64kUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-virtualUpgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-gcpUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1009-oemUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-azure-fde-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-28-genericUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-oem-24.04dUpgrade linux-image-7.0.0-28-realtime-64kUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-genericUpgrade linux-image-ibm-7.0Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-oem-24.04bUpgrade linux-image-nvidiaUpgrade linux-image-gke-64k-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-raspi-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-7.0.0-1008-gcpUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-nvidia-bosUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-realtime-64kUpgrade linux-image-oem-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-awsUpgrade linux-image-7.0.0-1008-gcp-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-gkeUpgrade linux-image-generic-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-azureUpgrade linux-image-raspiUpgrade linux-image-oem-24.04aUpgrade linux-image-7.0.0-1003-gke-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-oracleUpgrade linux-image-oem-24.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-generic-64k-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04cUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-azure-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-gke-7.0Upgrade linux-image-gke-64k | Jul 20, 2026 | Jun 26, 2026 |
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