Linux · 
Red Hat · Security advisory · October 15, 2025
Red Hat · Security advisory · October 15, 2025RHSA-2026:0271: kernel security update
RHSA-2026:0271, released October 15, 2025, fixes 8 CVEs in kernel (version 6.12.0-55.52.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
8
1 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0038
32nd percentile
Priority of the 8 CVEs
Patch now 0
Urgent 1
High 7
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| kernel | RHEL 10 | 6.12.0-55.52.1.el10_0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2025-39925 | can: j1939: implement NETDEV_UNREGISTER notification handler | 9.8 | 0.0015 | None reported |
| High | CVE-2025-40300 | x86/vmscape: Add conditional IBPB mitigation | 7.3 | 0.0038 | None reported |
| High | CVE-2025-39982 | Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync | 8.8 | 0.0028 | None reported |
| High | CVE-2025-39983 | linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix UAF in hci_conn_tx_deq... | 8.8 | 0.0025 | None reported |
| High | CVE-2025-39806 | kernel-64k-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: H... | 7.8 | 0.0024 | None reported |
| High | CVE-2025-39883 | mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory | 7.6 | 0.0016 | None reported |
| High | CVE-2025-39981 | Bluetooth: MGMT: Fix possible UAFs | 7.8 | 0.0015 | None reported |
| High | CVE-2025-39843 | mm: slub: avoid wake up kswapd in set_track_prepare | 7.8 | 0.0012 | None reported |
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