In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in create_space_info_sub_group() error path When kobject_init_and_add() fails, the call chain is: create_space_info_sub_group() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&sub_group->kobj) -> space_info_release() -> kfree(sub_group) Then control returns to create_space_info_sub_group(), where: btrfs_sysfs_add_space_info_type() returns error -> kfree(sub_group) Thus, sub_group is freed twice. Keep parent->sub_group[index] = NULL for the failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1866 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: fix end-of-list detection in cgroup_storage_get_next_key() (CVE-2026-45838)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: reject negative CO-RE accessor indices in bpf_core_parse_spec() (CVE-2026-45839)

    In the Linux kernel, the following vulnerability has been resolved:

    openvswitch: cap upcall PID array size and pre-size vport replies (CVE-2026-45840)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO (CVE-2026-45841)

    In the Linux kernel, the following vulnerability has been resolved:

    slip: reject VJ receive packets on instances with no rstate array (CVE-2026-45842)

    In the Linux kernel, the following vulnerability has been resolved:

    slip: bound decode() reads against the compressed packet length (CVE-2026-45843)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: arp_tables: fix IEEE1394 ARP payload parsing (CVE-2026-45844)

    In the Linux kernel, the following vulnerability has been resolved:

    bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() (CVE-2026-45846)

    In the Linux kernel, the following vulnerability has been resolved:

    sched_ext: Read scx_root under scx_cgroup_ops_rwsem in cgroup setters (CVE-2026-46154)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix btrfs_ioctl_space_info() slot_count TOCTOU which can lead to info-leak (CVE-2026-46159)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix double free in create_space_info_sub_group() error path (CVE-2026-46164)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock/virtio: fix empty payload in tap skb for non-linear buffers (CVE-2026-46207)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() (CVE-2026-46209)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock/virtio: fix accept queue count leak on transport mismatch (CVE-2026-46214)

    In the Linux kernel, the following vulnerability has been resolved:

    drm: Set old handle to NULL before prime swap in change_handle (CVE-2026-46215)

    In the Linux kernel, the following vulnerability has been resolved:

    sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock: fix buffer size clamping order (CVE-2026-46234)

    In the Linux kernel, the following vulnerability has been resolved:

    media: rc: xbox_remote: heed DMA restrictions (CVE-2026-46236)

    In the Linux kernel, the following vulnerability has been resolved:

    eventpoll: fix ep_remove struct eventpoll / struct file UAF (CVE-2026-46242)

    In the Linux kernel, the following vulnerability has been resolved:

    io-wq: check that the predecessor is hashed in io_wq_remove_pending() (CVE-2026-46274)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: use list_del_rcu for netlink hooks (CVE-2026-46324)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1816 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    bonding: fix use-after-free due to enslave fail after slave array update (CVE-2026-23171)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/pagewalk: fix race between concurrent split and refault (CVE-2026-31456)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/userfaultfd: fix hugetlb fault mutex hash calculation (CVE-2026-31575)

    In the Linux kernel, the following vulnerability has been resolved:

    fuse: reject oversized dirents in page cache (CVE-2026-31694)

    In the Linux kernel, the following vulnerability has been resolved:

    net/packet: fix TOCTOU race on mmap'd vnet_hdr in tpacket_snd() (CVE-2026-31700)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path (CVE-2026-31708)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: validate the whole DACL before rewriting it in cifsacl (CVE-2026-31709)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: validate rec->used in journal-replay file record check (CVE-2026-31716)

    In the Linux kernel, the following vulnerability has been resolved:

    Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)

    In the Linux kernel, the following vulnerability has been resolved:

    xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

    In the Linux kernel, the following vulnerability has been resolved:

    net: af_key: zero aligned sockaddr tail in PF_KEY exports (CVE-2026-43088)

    In the Linux kernel, the following vulnerability has been resolved:

    x86: shadow stacks: proper error handling for mmap lock (CVE-2026-43109)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: require a full NFS mode SID before reading mode bits (CVE-2026-43350)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix btrfs_ioctl_space_info() slot_count TOCTOU which can lead to info-leak (CVE-2026-46159)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix double free in create_space_info_sub_group() error path (CVE-2026-46164)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock/virtio: fix empty payload in tap skb for non-linear buffers (CVE-2026-46207)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() (CVE-2026-46209)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock/virtio: fix accept queue count leak on transport mismatch (CVE-2026-46214)

    In the Linux kernel, the following vulnerability has been resolved:

    sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock: fix buffer size clamping order (CVE-2026-46234)

    In the Linux kernel, the following vulnerability has been resolved:

    media: rc: xbox_remote: heed DMA restrictions (CVE-2026-46236)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - btrfs: fix double free in create_space_info_sub_group() error path When kobject_init_and_add() fails, the     call chain is: create_space_info_sub_group() -> btrfs_sysfs_add_space_info_type() ->     kobject_init_and_add() -> failure -> kobject_put(&sub_group->kobj) -> space_info_release() ->     kfree(sub_group) Then control returns to create_space_info_sub_group(), where:
    btrfs_sysfs_add_space_info_type() returns error -> kfree(sub_group) Thus, sub_group is freed twice. Keep     parent->sub_group[index] = NULL for the failure path, but after btrfs_sysfs_add_space_info_type() has     called kobject_put(), let the kobject release callback handle the cleanup. (CVE-2026-46164)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
322020	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1866)	Nessus	Amazon Linux Local Security Checks	high
319865	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)	Nessus	Amazon Linux Local Security Checks	high
317541	Linux Distros Unpatched Vulnerability : CVE-2026-46164	Nessus	Misc.	high

Detections

Analytics

CVE-2026-46164

high

Tenable Plugins

high

high

high