CVE-2026-68168 afs: Fix afs_edit_dir_remove() to get, not find, block 0

In the Linux kernel, the following vulnerability has been resolved: afs: Fix afseditdirremove to get, not find, block 0 Fix afseditdirremove to use afsdirgetblock to get block 0 rather than afsdirfindblock as the latter caches the found block in the afsdiriter and may switch out the page it's on ...

CVE-2026-68167 btrfs: do not try compression for data reloc inodes

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not try compression for data reloc inodes BUG There is a syzbot report that the check inside getnewlocation triggered: BTRFS info device loop0: found 31 extents, stage: move data extents BTRFS info device loop0: leaf...

CVE-2026-68166 userfaultfd: prevent registration of special VMAs

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can register on the shadow stack, discard a page ... and inject a page with...

CVE-2026-68165 mm/damon/core: validate ranges in damon_set_regions()

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: validate ranges in damonsetregions DAMON core logic assumes zero length regions don't exist. However, a few DAMON API callers including DAMONSYSFS, DAMONRECLAIM and DAMONLRUSORT allow users to set empty monitoring...

CVE-2026-68164 mm/damon/core: disallow overlapping input ranges for damon_set_regions()

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: disallow overlapping input ranges for damonsetregions damonsetregions assumes the input ranges are sorted by the address and don't overlap each other. Hence the assumption was initially to be explicitly validated...

CVE-2026-68163 mm/page_vma_mapped: fix device-private PMD handling

In the Linux kernel, the following vulnerability has been resolved: mm/pagevmamapped: fix device-private PMD handling Commit 65edfda6f3f2 "mm/rmap: extend rmap and migration support device-private entries" introduced the concept of device-private PMD entries, but did not correctly update the rmap...

CVE-2026-68162 sctp: avoid auth_enable sysctl UAF during netns teardown

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid authenable sysctl UAF during netns teardown procsctpdoauth updates the SCTP control socket after changing net.sctp.authenable. The handler gets the per-net SCTP state from ctl-data, so an already opened sysctl file ca...

CVE-2026-68161 sctp: close UDP tunnel sockets during netns teardown

In the Linux kernel, the following vulnerability has been resolved: sctp: close UDP tunnel sockets during netns teardown procsctpdoudpport starts per-net SCTP UDP tunneling sockets when net.sctp.udpport is set, and stops/restarts them when the sysctl value changes. The netns exit path does not st...

CVE-2026-68160 ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()

In the Linux kernel, the following vulnerability has been resolved: ceph: fix pre-auth out-of-bounds read on snaptrace in cephhandlecaps cephhandlecaps reads snaptracelen from the wire-format cephmdscaps header and uses it unconditionally to build a fake end pointer snaptrace + snaptracelen that ...

CVE-2026-68159 libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE

In the Linux kernel, the following vulnerability has been resolved: libceph: bound pgtemp,upmap,upmapitems length to CEPHPGMAXSIZE decodepgtemp decodes an user-controlled length but only rejects values large enough to overflow the allocation; it does not bound it to CEPHPGMAXSIZE. The helper back...

CVE-2026-68158 libceph: Fix multiplication overflow in decode_new_up_state_weight()

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix multiplication overflow in decodenewupstateweight If a message of type CEPHMSGOSDMAP contains a maliciously corrupted osdmap, out-of-bounds memory accesses may occur in decodenewupstateweight. This happens because th...

CVE-2026-68157 libceph: guard missing CRUSH type name lookup

In the Linux kernel, the following vulnerability has been resolved: libceph: guard missing CRUSH type name lookup Localized read selection can walk a parent bucket whose name exists in the CRUSH map while its type has no matching entry in typenames. getimmediateparent then dereferences a NULL...

CVE-2026-68156 libceph: refresh auth->authorizer_buf{,_len} after authorizer update

In the Linux kernel, the following vulnerability has been resolved: libceph: refresh auth-authorizerbuf,len after authorizer update cephxcreateauthorizer caches au-buf-vec.iovbase and au-buf-vec.iovlen in struct cephauthhandshake. These cached values are then used by the messenger connect code wh...

CVE-2026-68155 libceph: Reject monmaps advertising zero monitors

In the Linux kernel, the following vulnerability has been resolved: libceph: Reject monmaps advertising zero monitors A message of type CEPHMSGMONMAP contains a monmap that is sent from a monitor to the client. This monmap contains information about the existing monitors in the cluster. Currently...

CVE-2026-68154 libceph: reject zero bucket types in crush_decode

In the Linux kernel, the following vulnerability has been resolved: libceph: reject zero bucket types in crushdecode CRUSH bucket type 0 is reserved for devices. The mapper relies on that invariant and uses type 0 to identify leaf devices. If crushdecode accepts a bucket with type 0, a malformed...

CVE-2026-68153 libceph: remove debugfs files before client teardown

In the Linux kernel, the following vulnerability has been resolved: libceph: remove debugfs files before client teardown cephdestroyclient tears down the monitor client before removing the per-client debugfs files. A concurrent read of the monmap debugfs file can enter monmapshow after cephmoncst...

CVE-2026-68152 amt: fix use-after-free in AMT delayed works

In the Linux kernel, the following vulnerability has been resolved: amt: fix use-after-free in AMT delayed works When an AMT device is removed, pending delayed works can still access the freed amtdev structure, which may result in kernel crashes or memory corruption. amtdevstop cancels reqwq and...

EUVD-2026-55537

In the Linux kernel, the following vulnerability has been resolved: binfmtelffdpic: only honour the first PTINTERP The program header scan handles PTINTERP from a switch nested in the scan loop, so its break leaves the switch and not the loop. A binary carrying more than one PTINTERP runs the cas...

CVE-2026-68151 binfmt_elf_fdpic: only honour the first PT_INTERP

In the Linux kernel, the following vulnerability has been resolved: binfmtelffdpic: only honour the first PTINTERP The program header scan handles PTINTERP from a switch nested in the scan loop, so its break leaves the switch and not the loop. A binary carrying more than one PTINTERP runs the cas...

CVE-2026-68151

The CVE-2026-68151 entry concerns the Linux kernel FDPIC ELF binary format driver (binfmt_elf_fdpic). The flaw arises in how the program header scan handles PT_INTERP: the code may break out of the inner switch rather than the outer loop, causing binaries with more than one PT_INTERP to overwrite...