Summary
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: thermal: core: Fix thermal zone device registration error path (CVE-2026-43332)
* kernel: macsec: fix replay protection at XPN lower-PN wrap (CVE-2026-63925)
* kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)
* kernel: Kernel SMB client: Double-free vulnerability allows remote denial of service or privilege escalation (CVE-2026-64385)
* kernel: bpf: Support for hardening against JIT spraying (CVE-2026-64508)
* kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation (CVE-2026-64507)
* kernel: openvswitch: fix GSO userspace truncation underflow (CVE-2026-68123)
* kernel: cifs: validate DFS referral string offsets (CVE-2026-72318)
* kernel: KVM: arm64: vgic: Check the interrupt is still ours before migrating it (CVE-2026-72289)
* kernel: af_unix: Unlink scc_entry in unix_del_edge() (CVE-2026-80521)
* kernel: nvmet-auth: Synchronize timeout work during SQ teardown (CVE-2026-89970)
Bug Fix(es) and Enhancement(s):
* net/tls backports for 10.2 (JIRA:Rocky Linux-275027)
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 | 0:6.12.0-211.65.1.el10_2 |
Vulnerabilities 11
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Critical 9.8
smb: client: fix double-free in SMB2_ioctl() replay
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_ioctl() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_ioctl_init() fails before the next send, cle…
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Critical 9.8
openvswitch: fix GSO userspace truncation underflow
In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix GSO userspace truncation underflow OVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb length in OVS_CB(skb)->cutlen. When a later userspace action segments …
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Critical 9.8
nvmet-auth: Synchronize timeout work during SQ teardown
In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: Synchronize timeout work during SQ teardown nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work(). If the work has already started, cancellation does not wait …
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Critical 9.4
cifs: validate DFS referral string offsets
In the Linux kernel, the following vulnerability has been resolved: cifs: validate DFS referral string offsets parse_dfs_referrals() validates that the response header and referral array fit in the received buffer, but each referral also contains string offse…
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Critical 9.3
KVM: arm64: vgic: Check the interrupt is still ours before migrating it
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Check the interrupt is still ours before migrating it vgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating an interrupt to another vCPU. After reacquiri…
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High 8.1
macsec: fix replay protection at XPN lower-PN wrap
In the Linux kernel, the following vulnerability has been resolved: macsec: fix replay protection at XPN lower-PN wrap In macsec_post_decrypt(), when pn is U32_MAX, pn + 1 overflows u32 to 0 and the first branch never fires. If next_pn_halves.lower is also in…
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High 7.8
thermal: core: Fix thermal zone device registration error path
In the Linux kernel, the following vulnerability has been resolved: thermal: core: Fix thermal zone device registration error path If thermal_zone_device_register_with_trips() fails after registering a thermal zone device, it needs to wait for the tz->removal…
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High 7.8
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…
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High 7.8CVE-2026-80521 Public exploit
af_unix: Unlink scc_entry in unix_del_edge().
In the Linux kernel, the following vulnerability has been resolved: af_unix: Unlink scc_entry in unix_del_edge(). Kyle Zeng reported that GC could free a dead SCC partially. The scenario is as follows: 1) Create two SCCs: X -. A <-> B ^--' 2) Run the followin…
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Unscored —CVE-2026-64507 Public exploit
x86/bugs: Enable IBPB flush on BPF JIT allocation
In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip…
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Unscored —
bpf: Support for hardening against JIT spraying
In the Linux kernel, the following vulnerability has been resolved: bpf: Support for hardening against JIT spraying The BPF JIT allocator packs many small programs into larger executable allocations and reuses space within those allocations as programs are lo…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2468043
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2502397
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2502872
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2507035
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2507153
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2507218
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2513451
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2516396
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2516657
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2524478
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2535265
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advisory
https://access.redhat.com/errata/RHSA-2026:81406