Linux · Security advisory · June 24, 2026

RHSA-2026:21745: Security update for 12 packages

RHSA-2026:21745, released June 24, 2026, fixes 19 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
19
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0159
75th percentile

Priority of the 19 CVEs

Patch now 0 Urgent 0 High 19 Routine 0

Fixed package versions

ProductReleaseFixed in
kernel-rtRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-coreRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debugRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debug-coreRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debug-develRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debug-kvmRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debug-modulesRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-debug-modules-extraRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-develRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-kvmRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-modulesRHEL 80:4.18.0-553.126.1.rt7.467.el8_10
kernel-rt-modules-extraRHEL 80:4.18.0-553.126.1.rt7.467.el8_10

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
High CVE-2026-23455 kernel: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero leng... 9.1 0.0159 None reported
High CVE-2026-46195 smb: client: validate dacloffset before building DACL pointers 9.8 0.0068 None reported
High CVE-2026-31685 netfilter: ip6t_eui64: reject invalid MAC header for all packets 9.4 0.0049 None reported
High CVE-2026-43158 linux: In the Linux kernel, the following vulnerability has been resolved: xfs: fix freemap adjustments when adding xattrs... 8.8 0.0047 None reported
High CVE-2026-43190 kernel: In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length befo... 8.2 0.0046 None reported
High CVE-2025-71116 libceph: make decode_pool() more resilient against corrupted osdmaps 8.1 0.0046 None reported
High CVE-2026-31709 smb: client: validate the whole DACL before rewriting it in cifsacl 8.8 0.0035 None reported
High CVE-2026-31408 Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold 8.8 0.0032 None reported
High CVE-2026-43051 linux: In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix out-of-bounds read in wacom_intu... 8.1 0.0026 None reported
High CVE-2026-23243 RDMA/umad: Reject negative data_len in ib_umad_write 7.8 0.0018 None reported
High CVE-2025-68347 linux: In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-motu: fix buffer overflow in hwde... 7.8 0.0018 None reported
High CVE-2026-31532 can: raw: fix ro->uniq use-after-free in raw_rcv() 8.8 0.0017 None reported
High CVE-2025-68183 linux: In the Linux kernel, the following vulnerability has been resolved: ima: don't clear IMA_DIGSIG flag when setting or... 7.8 0.0015 None reported
High CVE-2025-39981 Bluetooth: MGMT: Fix possible UAFs 7.8 0.0015 None reported
High CVE-2026-23270 linux: In the Linux kernel, the following vulnerability has been resolved: net/sched: Only allow act_ct to bind to clsact/i... 8.1 0.0014 None reported
High CVE-2026-43027 linux: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_helper: pass helper to e... 7.8 0.0013 None reported
High CVE-2026-43020 linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load... 7.8 0.0013 None reported
High CVE-2026-31684 net: sched: act_csum: validate nested VLAN headers 7.8 0.0012 None reported
High CVE-2026-43163 linux: In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resiz... 8.1 0.0009 None reported
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