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Red Hat Security Advisory

RHSA-2026:90365

kernel security, bug fix, and enhancement update

Released 2026-10-26 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 15 records

Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: net/handshake: hand off the pinned file reference to accept_doit handshake_req_next() removes the request from the per-net pending list and drops hn_loc…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00635 Published 2026-07-19 Fixed in 6.6.160, 6.12.114 +3 CWE-416
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Take a long-lived file reference at submit handshake_nl_accept_doit() needs the file pointer backing req->hr_sk->sk_socket to survive the…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.0045 Published 2026-07-25 Partial fix · 6.6.160, 6.12.93 +3 CWE-416
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to list_splice_init() in handshake_net_exit() are reversed.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.0049 Published 2026-07-19 Fixed in 6.6.160, 6.12.93 +3 CWE-362
Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: ipvs: reload ip header after head reallocation __ip_vs_get_out_rt() calls skb_ensure_writable() which may reallocate skb->head.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00714 Published 2026-08-15 Partial fix · 5.10.269, 5.15.220 +6
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: selinux: avoid sk_socket dereference in selinux_sctp_bind_connect() selinux_sctp_bind_connect() dereferences sk->sk_socket to pass a struct socket * to…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00696 Published 2026-08-15 Partial fix · 5.10.266, 5.15.217 +6
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00129 Published 2026-08-15 Partial fix · 6.1.183, 6.6.151 +4
Priority LOW 37

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: clear vdev->msi_perm after freeing it on init failure vfio_msi_cap_len() lazily allocates the per-device MSI permission table: vdev->msi_perm…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00164 Published 2026-09-16 Partial fix · 4.5, 4.10 +10
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions When a file has the setuid or setgid bit set and is written to,…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00178 Published 2026-09-11 Partial fix · 5.10.273, 5.15.224 +6
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00127 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before replacing page cache folio fuse_try_move_folio() unlocks the request on entry but does not re-lock it on the success path.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00133 Published 2026-07-19 Partial fix · 5.15.211, 6.1.177 +6 CWE-416
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: hold reference on ct until flow is released nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also all…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00139 Published 2026-10-06 Partial fix · 5.10.271, 5.15.222 +6
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: md/raid5-ppl: fix use-after-free in ppl_do_flush() The loop in ppl_do_flush() continues iterating after calling ppl_io_unit_finished(), touching io->pen…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00153 Published 2026-09-24 Partial fix · 5.10.270, 5.15.221 +6
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: usb: usbfs: fix use-after-free of usb_device in usbdev_release() usbdev_release() drops its reference to the struct usb_device before draining the list…

CVSS — EPSS 0.00195 Published 2026-09-04 Partial fix · 5.10.269, 5.15.220 +7
Priority LOW 21

In the Linux kernel, the following vulnerability has been resolved: udp: Deal with race between UDP socket address change and rehash If a UDP socket changes its local address while it's receiving datagrams, as a result o…

CVSS 3.1MEDIUM 4.7 Local Low privileges No interaction EPSS 0.00181 Published 2025-02-27 Partial fix · 6.1.191, 6.6.160 +3 CWE-362