Summary
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)
* kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)
* kernel: sctp: diag: reject stale associations in dump_one path (CVE-2026-52917)
* kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801)
* kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971)
* kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)
* kernel: sctp: avoid auth_enable sysctl UAF during netns teardown (CVE-2026-68162)
* kernel: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() (CVE-2026-68117)
* kernel: sctp: auth: verify auth requirement when auth_chunk is NULL (CVE-2026-68300)
* kernel: sctp: validate stream count in sctp_process_strreset_inreq() (CVE-2026-68315)
* kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)
* kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588)
* kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)
* kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)
* kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)
* kernel: signal: Prevent exec() race (CVE-2026-98256)
* kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)
Bug Fix(es) and Enhancement(s):
* [10.2.z] kselftests: mm: hugepage-mremap: Bail out! mremap: Expected failure, but call succeeded (JIRA:Rocky Linux-181987)
* [IBM 10.3 FEAT] zcrypt driver overwrite function - kernel part [rhel-10.2.z] (JIRA:Rocky Linux-245336)
* Batch: z-stream xfrm - rhel-10.2.z (NST-Core-26W38) (JIRA:Rocky Linux-256678)
* RHIVOS - [backport] S32G Driver Enablement - USB (JIRA:Rocky Linux-257228)
* Fix pending kernel issues for L1VH GA - Kernel (JIRA:Rocky Linux-267038)
* Backport 6785011f8b16 ("ipv4: validate checksum_start before completing checksum") [rhel-10.2.z] (JIRA:Rocky Linux-280590)
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
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 10 | kernel | 0:6.12.0-211.67.1.el10_2 |
Vulnerabilities 17
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Critical 9.8
tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
In the Linux kernel, the following vulnerability has been resolved: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() When tipc_sk_create() fails to insert the new socket (tipc_sk_insert() returns non-zero), its error path frees the sk with s…
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Critical 9.8
sctp: auth: verify auth requirement when auth_chunk is NULL
In the Linux kernel, the following vulnerability has been resolved: sctp: auth: verify auth requirement when auth_chunk is NULL sctp_auth_chunk_verify() returns true unconditionally when chunk->auth_chunk is NULL, silently skipping authentication. This is inc…
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Critical 9.8
sctp: keep chunk->transport in step with the list it is queued on
In the Linux kernel, the following vulnerability has been resolved: sctp: keep chunk->transport in step with the list it is queued on __sctp_outq_flush_rtx() moves a gap-acked chunk onto another transport's transmitted list without updating chunk->transport: …
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Critical 9.8
sctp: validate cookie AUTH state before use
In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM len…
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Critical 9.8CVE-2026-89633 Public exploit
smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2()
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() coalesce_t2() computes data pointers directly from server-supplied DataOffset fields with no validation against bu…
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Critical 9.1
smb: client: reject a tree connect response whose byte count is too small
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon() bounds its strnlen() over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 …
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High 8.8
tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done
In the Linux kernel, the following vulnerability has been resolved: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done tipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to crypto_aead_decrypt(req) without taking a reference on the netns, un…
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High 8.8
Bluetooth: hci_sync: Fix advertising data UAFs
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix advertising data UAFs hci_find_adv_instance() returns an adv_info pointer that is valid only while hdev->lock is held. The advertising command-sync paths perform inst…
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High 7.8
openvswitch: defer tunnel netdev_put to RCU release
In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdev_put to RCU release ovs_netdev_tunnel_destroy() may run after NETDEV_UNREGISTER already detached the device. Dropping the netdev reference in destroy can race …
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High 7.8
xfrm: espintcp: do not reuse an in-progress partial send
In the Linux kernel, the following vulnerability has been resolved: xfrm: espintcp: do not reuse an in-progress partial send espintcp keeps a single in-flight transmit in ctx->partial. Before building a new sk_msg, espintcp_sendmsg() first tries to flush that…
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High 7.8
sctp: fix race between sctp_wait_for_connect and peeloff
In the Linux kernel, the following vulnerability has been resolved: sctp: fix race between sctp_wait_for_connect and peeloff sctp_wait_for_connect() drops and re-acquires the socket lock while waiting for the association to reach ESTABLISHED state. During thi…
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High 7.8
sctp: avoid auth_enable sysctl UAF during netns teardown
In the Linux kernel, the following vulnerability has been resolved: sctp: avoid auth_enable sysctl UAF during netns teardown proc_sctp_do_auth() updates the SCTP control socket after changing net.sctp.auth_enable. The handler gets the per-net SCTP state from …
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High 7.8CVE-2026-98256 Public exploit
signal: Prevent exec() race
In the Linux kernel, the following vulnerability has been resolved: signal: Prevent exec() race Hyunwoo debugged the following KASAN UAF splat: BUG: KASAN: slab-use-after-free in __send_signal_locked+0xb27/0xba0 Write of size 8 at addr ffff888007ed80c8 by tas…
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High 7.8CVE-2026-98260 Public exploit
exec: Cleanup POSIX timers right after de_thread()
In the Linux kernel, the following vulnerability has been resolved: exec: Cleanup POSIX timers right after de_thread() A per-thread CPU timer holds a reference to the PID of the thread it is attached to and, while it is armed, its node is queued in that threa…
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High 7.5
sctp: validate stream count in sctp_process_strreset_inreq()
In the Linux kernel, the following vulnerability has been resolved: sctp: validate stream count in sctp_process_strreset_inreq() When processing a RESET_IN_REQUEST from a peer, sctp_process_strreset_inreq() derives the stream count from the parameter length b…
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High 7.1
sctp: diag: reject stale associations in dump_one path
In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() ha…
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Unscored —
usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes()
In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() svdm_consume_modes() checks pmdata->altmodes against the array size once before the loop over the count, but forgo…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2461761
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2492098
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2492115
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2502254
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2502331
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2502356
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2513314
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2513397
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2513408
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2513474
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2516967
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2521384
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2524422
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2532089
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2532230
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2546482
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2546491
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advisory
https://access.redhat.com/errata/RHSA-2026:85321