CVE-2026-89687

CVE-2026-89687 affects the nfsd subsystem of the Linux kernel . The root cause is that dentry_create() can return a file that has not actually been opened, because ->atomic_open is permitted to succeed via finish_no_open() without opening the file. The function nfsd_file_do_acquire() did not v...

EUVD-2026-76584

In the Linux kernel, the following vulnerability has been resolved: nfsd: gate nfs2 setacl by argp-mask The NFSACL v2 SETACL path shares the decoder convention used by its v3 sibling: nfsaclsvcdecodesetaclargs fills in argp-aclaccess only when NFSACL is set in the request mask and argp-acldefault...

CVE-2026-89632

CVE-2026-89632 affects the Linux kernel SMB client , specifically the reparse_buf_ptr() function. The root cause is a use-before-check flaw: the function reads buf->ReparseDataLength (at offset 4) before verifying that count covers the full 8-byte fixed header. If a server returns an OutputCou...

CVE-2026-89632 smb: client: fix use-before-check of ReparseDataLength in reparse_buf_ptr()

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-before-check of ReparseDataLength in reparsebufptr reparsebufptr reads buf-ReparseDataLength before checking that count covers the full fixed header: buf = struct reparsedatabuffer u8 io + off; len = sizeofbu...

EUVD-2026-76544

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-before-check of ReparseDataLength in reparsebufptr reparsebufptr reads buf-ReparseDataLength before checking that count covers the full fixed header: buf = struct reparsedatabuffer u8 io + off; len = sizeofbu...

CVE-2026-89630 smb: client: restore the data_offset bound in is_valid_oplock_break()

In the Linux kernel, the following vulnerability has been resolved: smb: client: restore the dataoffset bound in isvalidoplockbreak Commit 83bfbd0bb902 "cifs: Remove the RFC1002 header from smbhdr" changed the quantity this bound is measured against. It used to be srv-totalread minus the 4-byte...

CVE-2026-89630

CVE-2026-89630 affects the Linux kernel SMB client (CIFS) , specifically the is_valid_oplock_break() function. A prior commit (83bfbd0bb902) that removed the RFC1002 header from smb_hdr changed the quantity the data_offset bound is measured against. The mechanical substitution to srv->total_re...

CVE-2026-89629 HID: corsair-void: Check size of status and firmware events before reading them

In the Linux kernel, the following vulnerability has been resolved: HID: corsair-void: Check size of status and firmware events before reading them Malformed status and firmware events could cause an out-of-bounds read since the size wasn't being checked. Check the size and warn on unexpected...

CVE-2026-89621 HID: mcp2221: validate report size in mcp2221_raw_event()

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: validate report size in mcp2221rawevent mcp2221rawevent never validates the size of incoming HID reports. In the MCP2221I2CGETDATA path it trusts the device-supplied data3 as the copy length without checking that 4 ...

CVE-2026-89593 hugetlb: only adjust reservation during unmapping if mapcount is 0

In the Linux kernel, the following vulnerability has been resolved: hugetlb: only adjust reservation during unmapping if mapcount is 0 Since df7a6d1f6405, unmaphugepagerange can adjust reservations. In the case of folio mapped in both a parent and a child, if the parent unmaps the range first, th...

CVE-2026-89587

CVE-2026-89587 is a stack buffer overflow in the Linux kernel's ACPI pfr_update driver. The function query_capability() copies four firmware-supplied ACPI _DSM buffer objects into fixed-size u8[16] fields of the stack-allocated struct pfru_update_cap_info using memcpy with the firmware-provided l...

CVE-2026-89560 landlock: Require LANDLOCK_ACCESS_FS_MAKE_REG for whiteout creation

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

EUVD-2026-76472

In the Linux kernel, the following vulnerability has been resolved: ipv6: rpl: fix NULL dereference of idev in ipv6rplsrhrcv ipv6rplsrhrcv dereferences idev from in6devget without a NULL check when reading idev-cnf.rplsegenabled. When the device's MTU drops below IPV6MINMTU, addrconfifdown clears...

EUVD-2026-76461

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauthgss: enforce krb5 token minimum length svcauthgssunwrappriv validates only an upper bound on the wire-supplied opaque length before handing the buffer to gssunwrap: if len xdrstreamremainingxdr goto unwrapfailed;...

CVE-2026-89537 SUNRPC: Reject short RFC 4121 MIC tokens in gss_krb5_verify_mic_v2

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject short RFC 4121 MIC tokens in gsskrb5verifymicv2 gsskrb5verifymicv2 reads the token ID at ptr0..1, the flags byte at ptr2, and padding at ptr3..7, then passes ptr + GSSKRB5TOKHDRLEN and cksumlen to gsskrb5micbuildsg...

CVE-2026-89482 nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: do not accept C2HData based on blkrqpayloadbytes alone Commit 25e5cb780e62 "nvme-tcp: fix possible crash in writezeroes processing" established that blkrqpayloadbytes must not be read without first checking...

EUVD-2026-76386

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: reject a read that transferred too few bytes nvmetcprecvdata completes a request once the current C2HData PDU has been consumed. Nothing compares the total bytes received against the length the command asked for: struct...

CVE-2026-89439

CVE-2026-89439 affects the Linux kernel's platform/x86 ISST driver . The vulnerability stems from a missing NULL check on isst_common.sst_inst[] when socket loading fails. The fix adds a NULL check to be consistent with other code paths that already handle this condition. No specific affected ker...

EUVD-2026-76345

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Add a NULL check for sstinst To be consistent with other places, add a NULL check for failed socket loading by checking isstcommon.sstinst...

CVE-2026-89439 platform/x86: ISST: Add a NULL check for sst_inst[]

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Add a NULL check for sstinst To be consistent with other places, add a NULL check for failed socket loading by checking isstcommon.sstinst...