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High RLSA-2026:93413 16 CVEs

Important: kernel security, bug fix, and enhancement update

Published Nov 3, 2026 · Updated Nov 3, 2026

Ecosystem: Rocky Linux

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: Kernel: Denial of Service in network socket error handling (CVE-2026-22977)

* kernel: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache (CVE-2026-46174)

* kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)

* kernel: Linux kernel: PPP over L2TP Use-After-Free vulnerability (CVE-2026-68398)

* kernel: mptcp: pm: userspace: fix use-after-free in get_local_id (CVE-2026-68169)

* kernel: tipc: require net admin for TIPCv2 netlink mutators (CVE-2026-74283)

* kernel: mptcp: options: reset DSS fields in case of unexpected size (CVE-2026-80586)

* kernel: entry: Fix seccomp bypass after ptrace with TSYNC (CVE-2026-89603)

* kernel: KVM: nVMX: Always flush vpid02 on first use (CVE-2026-89932)

* kernel: scsi: target: iscsi: Reserve a terminator byte for the login payload (CVE-2026-90011)

* kernel: virtio-fs: avoid double-free on failed queue setup (CVE-2026-93827)

* kernel: smb: client: bound dirent name against end of SMB response in cifs_filldir (CVE-2026-93787)

* kernel: KEYS: encrypted: fix integer overflow of datablob_len (CVE-2026-98222)

* kernel: xfrm: hold net_device reference under RCU in bundle creation (CVE-2026-98364)

* kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period (CVE-2026-98432)

* kernel: nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge() (CVE-2026-98725)

Bug Fix(es) and Enhancement(s):

* ipv4: ip_gre: make ipgre_header() robust (rhel-10.2.z) (JIRA:Rocky Linux-270702)

* ip6_gre: make ip6gre_header() robust (rhel-10.2.z) (JIRA:Rocky Linux-270721)

* Rocky Linux is missing support for conntrack zone filtering in dump/delete requests (10.4) [rhel-10.2.z] (JIRA:Rocky Linux-291348)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 10 kernel 0:6.12.0-211.72.1.el10_2

Vulnerabilities 16

  • Critical 9.8
    CVE-2026-80586

    mptcp: options: reset DSS fields in case of unexpected size

    In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboptio…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-98432 Public exploit

    ipv4: free inet_opt and ireq_opt after an RCU grace period

    In the Linux kernel, the following vulnerability has been resolved: ipv4: free inet_opt and ireq_opt after an RCU grace period tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without copying it. Another cpu…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.1
    CVE-2026-90011

    scsi: target: iscsi: Reserve a terminator byte for the login payload

    In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Reserve a terminator byte for the login payload iscsi_target_check_login_request() rejects a login PDU whose DataSegmentLength exceeds MAX_KEY_VALUE_PAIRS, but the test i…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.8
    CVE-2026-46174

    x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

    In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.8
    CVE-2026-89932

    KVM: nVMX: Always flush vpid02 on first use

    In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting last_vpid=0 when allocating vpid02. nested_vmx_transition_tlb_flush() will always detect…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.4
    CVE-2026-89603 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

    linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux
  • High 8.4
    CVE-2026-93827

    virtio-fs: avoid double-free on failed queue setup

    In the Linux kernel, the following vulnerability has been resolved: virtio-fs: avoid double-free on failed queue setup virtio_fs_setup_vqs() allocates fs->vqs and fs->mq_map before calling virtio_find_vqs(). If virtio_find_vqs() fails, the error path frees bo…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.1
    CVE-2026-93787

    smb: client: bound dirent name against end of SMB response in cifs_filldir

    In the Linux kernel, the following vulnerability has been resolved: smb: client: bound dirent name against end of SMB response in cifs_filldir cifs_filldir() copies the entry name out of an SMB1 TRANS2_FIND_FIRST / FIND_NEXT response using a length (de.namele…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-64191

    i2c: stub: Reject I2C block transfers with invalid length

    In the Linux kernel, the following vulnerability has been resolved: i2c: stub: Reject I2C block transfers with invalid length The I2C_SMBUS_I2C_BLOCK_DATA case in stub_xfer() uses data->block[0] as the transfer length. The existing check only clamps it to avo…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-68398 Public exploit

    ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF

    In the Linux kernel, the following vulnerability has been resolved: ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF pppol2tp_recv() runs in the L2TP UDP-encap softirq RX path: l2tp_udp_encap_recv() -> l2tp_recv_common() -> pppol2tp_recv(…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-74283

    tipc: require net admin for TIPCv2 netlink mutators

    In the Linux kernel, the following vulnerability has been resolved: tipc: require net admin for TIPCv2 netlink mutators TIPCv2 registers mutating generic-netlink operations without admin permission flags. Generic netlink only checks CAP_NET_ADMIN when an oper…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-98364

    xfrm: hold net_device reference under RCU in bundle creation

    In the Linux kernel, the following vulnerability has been resolved: xfrm: hold net_device reference under RCU in bundle creation xfrm_bundle_create() and xfrm_create_dummy_bundle() read dst->dev into a local pointer without taking a device reference, then pas…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-22977

    net: sock: fix hardened usercopy panic in sock_recv_errqueue

    In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sock_recv_errqueue skbuff_fclone_cache was created without defining a usercopy region, [1] unlike skbuff_head_cache which properly whitelists the cb[…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-68169

    mptcp: pm: userspace: fix use-after-free in get_local_id

    In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: userspace: fix use-after-free in get_local_id In mptcp_pm_userspace_get_local_id(), the address entry is looked up under spinlock, but its id is read after dropping the lock. A con…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-98222

    KEYS: encrypted: fix integer overflow of datablob_len

    In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths. If the result exceeds U16_MA…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-98725

    nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()

    In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge() nvmet_auth_challenge() receives its output buffer as a void pointer. sizeof(*d) therefore evaluates to one with GCC and undercoun…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2431602
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482549
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502872
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513188
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2513435
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2516935
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2524438
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2535212
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2535227
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540396
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540555
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2546385
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2546487
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2553390
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2555068
  • advisory
    https://access.redhat.com/errata/RHSA-2026:93413