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Search Results (417557 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-87692 | 1 Microsoft | 8 Exchange Server, Exchange Server 2016, Exchange Server 2019 and 5 more | 2026-10-29 | 7.8 High |
| Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83720 | 1 Microsoft | 2 Windows 11 26h1, Windows 11 26h1 | 2026-10-29 | 7 High |
| Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83721 | 1 Microsoft | 10 Windows 11 24h2, Windows 11 24h2, Windows 11 25h2 and 7 more | 2026-10-29 | 7.8 High |
| Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83723 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 5.5 Medium |
| Use of uninitialized resource in Windows Event Logging Service allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-83724 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 7 High |
| Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83707 | 1 Microsoft | 23 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 20 more | 2026-10-29 | 7 High |
| Use after free in Windows Event Tracing allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83708 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 7 High |
| Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83709 | 1 Microsoft | 23 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 20 more | 2026-10-29 | 7.8 High |
| Heap-based buffer overflow in Windows NTLM allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83710 | 1 Microsoft | 23 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 20 more | 2026-10-29 | 7 High |
| Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83726 | 1 Microsoft | 23 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 20 more | 2026-10-29 | 7.8 High |
| Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83727 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 7.8 High |
| Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83728 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 8.8 High |
| Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized attacker to perform spoofing locally. | ||||
| CVE-2026-83732 | 1 Microsoft | 23 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 20 more | 2026-10-29 | 7.8 High |
| Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-83733 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 5.5 Medium |
| Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-85829 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 7.8 High |
| Double free in Windows Wired AutoConfig Service allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-85830 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 5.5 Medium |
| Out-of-bounds read in Windows Installer allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-85831 | 1 Microsoft | 20 Windows 10 1809, Windows 10 21h2, Windows 10 21h2 and 17 more | 2026-10-29 | 5.5 Medium |
| Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-85832 | 1 Microsoft | 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more | 2026-10-29 | 7.8 High |
| Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-98995 | 1 Linux | 2 Linux, Linux Kernel | 2026-10-29 | 7.8 High |
| In the Linux kernel, the following vulnerability has been resolved: namespace: reset the old parent's ->overmount in mnt_change_mountpoint() __umount_mnt() resets ->overmount of the parent when it unmounts the mount that overmounts it. mnt_change_mountpoint() doesn't. It moves the mount to its new parent and leaves the old one pointing at it. For a mount that is moved beneath in attach_recursive_mnt() that doesn't matter. The new mount has already reset ->overmount of the old parent by the time the old top mount is moved onto it. It matters for reparent() though. propagate_umount() moves a surviving overmount onto the first ancestor that isn't going to be unmounted. The mount it was taken from is unmounted immediately afterwards. If a file descriptor keeps that unmounted mount alive ->overmount points at the moved mount. That's a dangling pointer and UAF as the moved mount is unmounted and freed. do_lock_mount() follows ->overmount from the target path under mount_lock. With a file descriptor on such a mount as the target of a mount beneath topmost_overmount() walks into the freed mount and do_lock_mount() takes references on whatever it finds there. So reset ->overmount of the old parent in mnt_change_mountpoint() the same way __umount_mnt() does. A mount's ->overmount is then always a mount that is attached to it. | ||||
| CVE-2026-98996 | 1 Linux | 2 Linux, Linux Kernel | 2026-10-29 | 2.5 Low |
| In the Linux kernel, the following vulnerability has been resolved: fs: don't silently unmount busy mounts The propagate_mount_busy() helper exists to decide whether a synchronous can suceed. It does that by looking at the copies of the victims in the mounts its parent propagates to. One of those functions from propagation hell. It skips a copy that has child mounts except for the case of a single child mount covering the copy's root. That algorithm used to be exact. It isn't anymore. Originally only childless copies were unmounted during propagation. And 1064f874abc0 ("mnt: Tuck mounts under others instead of creating shadow/side mounts.") ended up adding covered mounts to both sides in one go. Along came 99b19d16471e ("mnt: In propgate_umount handle visiting mounts in any order") and that started to unmount more than before: [1]: A copy of a mount is unmounted when each of its children is either its overmount or a copy of the victim itself. In the former case the overmount gets reparented. In the latter case the copy of the victim will end up being unmounted. So propagate_umount() ended up being rewritten without adjusting propagate_mount_busy(). And currently propagate_mount_busy() doesn't look at copies of the victim that have two or more children nor a single child that is not the overmount. So any such copy in [1] is not checked for references. The result is that a synchronous unmount succeeds, pulling out a mount that is still in use. A container can run into this with its own mounts. The host shares a tree with the container and the host has a mount in that tree: mount -t tmpfs none /mnt mount --make-shared /mnt mount -t tmpfs none /mnt/a The container's /mnt is a slave copy of the host mount. The container now takes a detached copy of the tree and mounts that copy beneath its propagated copy of /mnt/a and keeps the file descriptor to the tree open: unshare -m --propagation unchanged mount --make-rslave / fd = open_tree(AT_FDCWD, "/mnt", OPEN_TREE_CLONE | AT_RECURSIVE) move_mount(fd, "", AT_FDCWD, "/mnt/a", MOVE_MOUNT_BENEATH) grep /mnt /proc/self/mountinfo 775 355 ... /mnt ... master:646 777 775 ... /mnt/a ... master:646 776 777 ... /mnt/a ... master:647 778 777 ... /mnt/a/a ... master:647 The now attached tree (777) is now mounted beneath the container's copy of /mnt/a. That's also where the host mount sits (as seen from the host mount namespace). So the propagated copy (776) of the host's mount is on top of its root and the copy of that (778) is inside it. Now the host runs: umount /mnt/a and it succeeds. The moved tree tree and the copy inside of it are gone from the container. Now only the propagated copy is left and it got reparented to where it was before: grep /mnt /proc/self/mountinfo 775 355 ... /mnt ... master:646 776 775 ... /mnt/a ... But the file descriptor still refers to the moved tree. So a synchronous umount detached a mount that is still in use. Teach propagate_mount_busy() the same checks that propagate_umount() does. It now checks for a single victim mount without children for which it can assume that MNT_LOCKED is cleared on every copy like propagate_umount() does. The copies form chains. IOW, when a copy itself receives propagation from the victim's parent then the mount at the same mountpoint inside that copy is a copy as well. Whether a mount receives propagation from the victim's can simply be checked by walking its masters. Walk each chain once from its top so we are sure that nested copies stay linear. Check every reference once of every copy that gets unmounted. | ||||