Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: bonding: check xdp prog when set bond mode (CVE-2025-22105) * kernel: block: fix resource leak in blk_register_queue() error path (CVE-2025-37980) * kernel: dmaengine: idxd: fix memory leak in error handling path of idxd_alloc (CVE-2025-38015) * kernel: espintcp: remove encap socket caching to avoid reference leak (CVE-2025-38097) * kernel: bpf: fix ktls panic with sockmap (CVE-2025-38166) * kernel: bpf: Do not include stack ptr register in precision backtracking bookkeeping (CVE-2025-38279) * kernel: nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails (CVE-2025-38400) * kernel: nvmet: fix memory leak of bio integrity (CVE-2025-38405) * kernel: netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() (CVE-2025-38441) * kernel: net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime (CVE-2025-38470) * kernel: fs: writeback: fix use-after-free in __mark_inode_dirty() (CVE-2025-39866) * kernel: dm: fix NULL pointer dereference in __dm_suspend() (CVE-2025-40134) * kernel: wifi: mac80211_hwsim: fix typo in frequency notification (CVE-2026-23040) * kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.
AI Analysis
Technical Summary
Red Hat Product Security released a security advisory (RHSA-2026:18587) for Red Hat Enterprise Linux 9 kernel packages addressing 14 vulnerabilities (CVE-2025-22105, CVE-2025-37980, CVE-2025-38015, CVE-2025-38097, CVE-2025-38166, CVE-2025-38279, CVE-2025-38400, CVE-2025-38405, CVE-2025-38441, CVE-2025-38470, CVE-2025-39866, CVE-2025-40134, CVE-2026-23040, CVE-2026-23243). These vulnerabilities affect various kernel components, including bonding mode checks, resource and memory leaks, reference leaks, use-after-free conditions, NULL pointer dereferences, and denial of service and memory corruption in RDMA. The advisory provides fixes for these issues and requires a system reboot to apply the updates. The update is rated with moderate severity by Red Hat. No CVSS scores are provided in the advisory; users are referred to individual CVE pages for detailed scoring.
Potential Impact
The vulnerabilities collectively could lead to resource leaks, memory corruption, denial of service, use-after-free conditions, and NULL pointer dereferences within the Linux kernel. These issues may affect system stability and security but are rated as moderate in severity by Red Hat. There are no known exploits in the wild for these vulnerabilities at the time of the advisory.
Mitigation Recommendations
Red Hat has released an official security update for the Linux kernel packages in Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities. Users should apply the update as provided by Red Hat and reboot their systems to ensure the fixes take effect. No additional mitigation steps are indicated or required beyond applying the official update and rebooting.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: bonding: check xdp prog when set bond mode (CVE-2025-22105) * kernel: block: fix resource leak in blk_register_queue() error path (CVE-2025-37980) * kernel: dmaengine: idxd: fix memory leak in error handling path of idxd_alloc (CVE-2025-38015) * kernel: espintcp: remove encap socket caching to avoid reference leak (CVE-2025-38097) * kernel: bpf: fix ktls panic with sockmap (CVE-2025-38166) * kernel: bpf: Do not include stack ptr register in precision backtracking bookkeeping (CVE-2025-38279) * kernel: nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails (CVE-2025-38400) * kernel: nvmet: fix memory leak of bio integrity (CVE-2025-38405) * kernel: netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() (CVE-2025-38441) * kernel: net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime (CVE-2025-38470) * kernel: fs: writeback: fix use-after-free in __mark_inode_dirty() (CVE-2025-39866) * kernel: dm: fix NULL pointer dereference in __dm_suspend() (CVE-2025-40134) * kernel: wifi: mac80211_hwsim: fix typo in frequency notification (CVE-2026-23040) * kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security released a security advisory (RHSA-2026:18587) for Red Hat Enterprise Linux 9 kernel packages addressing 14 vulnerabilities (CVE-2025-22105, CVE-2025-37980, CVE-2025-38015, CVE-2025-38097, CVE-2025-38166, CVE-2025-38279, CVE-2025-38400, CVE-2025-38405, CVE-2025-38441, CVE-2025-38470, CVE-2025-39866, CVE-2025-40134, CVE-2026-23040, CVE-2026-23243). These vulnerabilities affect various kernel components, including bonding mode checks, resource and memory leaks, reference leaks, use-after-free conditions, NULL pointer dereferences, and denial of service and memory corruption in RDMA. The advisory provides fixes for these issues and requires a system reboot to apply the updates. The update is rated with moderate severity by Red Hat. No CVSS scores are provided in the advisory; users are referred to individual CVE pages for detailed scoring.
Potential Impact
The vulnerabilities collectively could lead to resource leaks, memory corruption, denial of service, use-after-free conditions, and NULL pointer dereferences within the Linux kernel. These issues may affect system stability and security but are rated as moderate in severity by Red Hat. There are no known exploits in the wild for these vulnerabilities at the time of the advisory.
Mitigation Recommendations
Red Hat has released an official security update for the Linux kernel packages in Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities. Users should apply the update as provided by Red Hat and reboot their systems to ensure the fixes take effect. No additional mitigation steps are indicated or required beyond applying the official update and rebooting.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:18587
- Cve Count
- 14
- Additional Cves
- ["CVE-2025-37980","CVE-2025-38015","CVE-2025-38097","CVE-2025-38166","CVE-2025-38279","CVE-2025-38400","CVE-2025-38405","CVE-2025-38441","CVE-2025-38470","CVE-2025-39866","CVE-2025-40134","CVE-2026-23040","CVE-2026-23243"]
- Cvss Version
- null
Threat ID: 6a160984e29bf47b506515da
Added to database: 05/26/2026, 20:58:44 UTC
Last enriched: 07/08/2026, 14:02:53 UTC
Last updated: 07/31/2026, 19:22:53 UTC
Views: 139
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
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
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.