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: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216) * kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419) * kernel: net: openvswitch: Avoid releasing netdev before teardown completes (CVE-2026-31508) * kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581) * kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037) * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056) * kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116) * kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125) * kernel: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (CVE-2026-43501) * kernel: RDMA/rxe: Fix double free in rxe_srq_from_init (CVE-2026-45852) * kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181) 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.
AI Analysis
Technical Summary
This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 8 and 9. Key fixes include resolving use-after-free vulnerabilities in the iscsi target (CVE-2026-23216), bonding driver (CVE-2026-31419), ALSA 6fire disconnect (CVE-2026-31581), and net mana add_adev error path (CVE-2026-43056). Other fixes cover double free issues in RDMA components (CVE-2026-45852, CVE-2026-46189), safe access to master conntrack (CVE-2026-43116), and validation of length in dlm_search_rsb_tree (CVE-2026-43125). These vulnerabilities could lead to denial of service or memory corruption. The advisory provides updated kernel packages for affected Red Hat Enterprise Linux versions and requires a reboot to apply the updates.
Potential Impact
The vulnerabilities addressed include use-after-free and double free bugs that can cause denial of service or potential memory corruption within the Linux kernel. These issues affect core kernel components such as SCSI target, bonding driver, networking subsystems, and RDMA drivers. Exploitation could lead to system instability or crashes. No known exploits in the wild have been reported at this time. The impact is rated as important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 8 and 9 that address these vulnerabilities. Users should apply the provided security updates promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. A system reboot is required for the updates to take effect. No additional mitigation steps are indicated beyond applying the official patches.
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: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216) * kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419) * kernel: net: openvswitch: Avoid releasing netdev before teardown completes (CVE-2026-31508) * kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581) * kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037) * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056) * kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116) * kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125) * kernel: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (CVE-2026-43501) * kernel: RDMA/rxe: Fix double free in rxe_srq_from_init (CVE-2026-45852) * kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181) 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 8 and 9. Key fixes include resolving use-after-free vulnerabilities in the iscsi target (CVE-2026-23216), bonding driver (CVE-2026-31419), ALSA 6fire disconnect (CVE-2026-31581), and net mana add_adev error path (CVE-2026-43056). Other fixes cover double free issues in RDMA components (CVE-2026-45852, CVE-2026-46189), safe access to master conntrack (CVE-2026-43116), and validation of length in dlm_search_rsb_tree (CVE-2026-43125). These vulnerabilities could lead to denial of service or memory corruption. The advisory provides updated kernel packages for affected Red Hat Enterprise Linux versions and requires a reboot to apply the updates.
Potential Impact
The vulnerabilities addressed include use-after-free and double free bugs that can cause denial of service or potential memory corruption within the Linux kernel. These issues affect core kernel components such as SCSI target, bonding driver, networking subsystems, and RDMA drivers. Exploitation could lead to system instability or crashes. No known exploits in the wild have been reported at this time. The impact is rated as important by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 8 and 9 that address these vulnerabilities. Users should apply the provided security updates promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. A system reboot is required for the updates to take effect. No additional mitigation steps are indicated beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:25217
- Cve Count
- 11
- Additional Cves
- ["CVE-2026-31419","CVE-2026-31508","CVE-2026-31581","CVE-2026-43037","CVE-2026-43056","CVE-2026-43116","CVE-2026-43125","CVE-2026-43501","CVE-2026-45852","CVE-2026-46181"]
Threat ID: 6a2f1a511cccde5f2636efe6
Added to database: 06/14/2026, 21:17:05 UTC
Last enriched: 08/11/2026, 20:34:39 UTC
Last updated: 09/14/2026, 22:01:32 UTC
Views: 5414
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