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Red Hat Security Advisory

RHSA-2026:93413

kernel security, bug fix, and enhancement update

Released 2026-11-01 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 16 records

Priority MEDIUM 49

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 +…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00399 Published 2026-08-26 Partial fix · 5.10.266, 5.15.217 +6
Priority MEDIUM 43

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->in…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.0076 Published 2026-10-15 Partial fix · 5.10.272, 5.15.223 +6
Priority MEDIUM 41

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 exce…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00841 Published 2026-09-16 Partial fix · 5.10.270, 5.15.221 +6
Priority LOW 39

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 i…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00153 Published 2026-05-28 Partial fix · 3.17, 4.5 +9 CWE-862
TI-2026-60975 CVE-2026-89932 · GHSA-8q77-gpg3-wgrc

KVM: nVMX: Always flush vpid02 on first use

Priority LOW 37

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.

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00169 Published 2026-09-16 Partial fix · 5.15.221, 6.1.188 +5
Priority LOW 36

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()…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00232 Published 2026-08-10 Partial fix · 3.3, 3.17 +10 CWE-416
Priority LOW 35

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().

CVSS 3.1HIGH 8.4 Local No auth No interaction EPSS 0.0014 Published 2026-09-24 Fixed in 6.12.111, 6.18.53 +1
Priority LOW 35

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_…

CVSS 3.1HIGH 8.1 Network No auth User interaction EPSS 0.00344 Published 2026-09-24 Partial fix · 6.1.189, 6.6.158 +3
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue.

CVSS 3.1HIGH 8.4 Local Low privileges No interaction EPSS 0.00142 Published 2026-09-11 Partial fix · 5.10.270, 5.15.221 +6
Priority LOW 35

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.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00169 Published 2026-08-15 Partial fix · 5.10.261, 5.15.212 +6
Priority LOW 35

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.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00165 Published 2026-07-20 Partial fix · 5.10.260, 5.15.211 +6 CWE-787
Priority LOW 33

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 with…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00121 Published 2026-10-06 Partial fix · 7.2.8, 7.3
Priority LOW 24

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_…

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.00194 Published 2026-01-21 Partial fix · 5.10.248, 5.15.198 +5 CWE-400
Priority LOW 22

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.

CVSS — EPSS 0.00211 Published 2026-10-18 Partial fix · 6.1.191, 6.6.160 +4
Priority LOW 22

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.

CVSS — EPSS 0.00168 Published 2026-10-06 Partial fix · 6.12.112, 6.18.54 +2
Priority LOW 22

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…

CVSS — EPSS 0.00211 Published 2026-08-10 Fixed in 6.1.184, 6.6.151 +5