Skip to main content
Press slash or control plus K to focus the search. Use the arrow keys to navigate results and press enter to open a threat.
Reconnecting to live updates…
EPSS 0.2%top 89%

Red Hat Security Advisory: kernel security update

0
Medium
Published: 02/09/2026 (02/09/2026, 18:09:49 UTC)
Source: GCVE Database
Vendor/Project: Red Hat Product Security
Product: Red Hat

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: sched: sch_cake: add bounds checks to host bulk flow fairness counts (CVE-2025-21647) * kernel: NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client() (CVE-2024-54456) * kernel: workqueue: Put the pwq after detaching the rescuer from the pool (CVE-2025-21786) * kernel: vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791) * kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022) * kernel: smb: client: Fix use-after-free in cifs_fill_dirent (CVE-2025-38051) * kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568) * kernel: Linux kernel: Out-of-bounds write in Bluetooth MGMT can lead to information disclosure and denial of service (CVE-2025-40294) * kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322) * kernel: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid (CVE-2025-68349) 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.

Affected software

redhat/kernel
pkg:rpm/redhat/kernel
Affected versions
>=9.6 <9.6.1

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/25/2026, 21:56:39 UTC

Technical Analysis

The advisory covers a set of ten vulnerabilities in the Linux kernel used by Red Hat Enterprise Linux 9.6 Extended Update Support. These include CVE-2024-54456 (potential buffer overflow in NFS), CVE-2025-21647 (bounds checks in scheduler), CVE-2025-21786 (workqueue detachment ordering), CVE-2025-21791 (RCU protection in VRF), CVE-2025-38022 (use-after-free in RDMA core), CVE-2025-38051 (use-after-free in SMB client), CVE-2025-38568 (stack out-of-bounds write in network scheduler), CVE-2025-40294 (out-of-bounds write in Bluetooth MGMT causing info disclosure and DoS), CVE-2025-40322 (out-of-bounds read in font glyph handling causing info disclosure and DoS), and CVE-2025-68349 (NFSv4/pNFS stateid invalidation). The advisory provides patches for these issues and requires rebooting the system after applying the update.

Potential Impact

The vulnerabilities collectively may lead to information disclosure, denial of service, and memory corruption issues such as buffer overflows and use-after-free conditions within the kernel. These could affect system stability and security by allowing attackers to cause crashes or potentially leak sensitive information. The overall security impact is rated as moderate by Red Hat.

Mitigation Recommendations

A security update for the Linux kernel packages is available for Red Hat Enterprise Linux 9.6 Extended Update Support. Users should apply the update as described in the Red Hat advisory RHSA-2026:2352 and reboot their systems to ensure the fixes take effect. No additional mitigations are specified beyond applying the official update and rebooting.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Gcve Source
db.gcve.eu
Csaf Category
csaf_security_advisory
Csaf Version
2.0
Publisher
Red Hat Product Security
Advisory Id
RHSA-2026:2352
Cve Count
10
Additional Cves
["CVE-2025-21647","CVE-2025-21786","CVE-2025-21791","CVE-2025-38022","CVE-2025-38051","CVE-2025-38568","CVE-2025-40294","CVE-2025-40322","CVE-2025-68349"]
Cvss Version
null

Threat ID: 6a3da1c54853345fc181fc9d

Added to database: 06/25/2026, 21:46:45 UTC

Last enriched: 06/25/2026, 21:56:39 UTC

Last updated: 07/02/2026, 20:51:14 UTC

Views: 10

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses