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: Linux kernel: irqchip/gic-v2m use-after-free vulnerability (CVE-2025-37819) * kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022) * kernel: Linux kernel use-after-free in eventpoll (CVE-2025-38349) * kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU (CVE-2025-38453) * kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568) * kernel: drm/xe: Fix vm_bind_ioctl double free bug (CVE-2025-38731) * kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154) * kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170) * kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135) * kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158) * kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248) * kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258) * kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy (CVE-2025-40251) * kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271) * 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 in Bluetooth HCI event handling (CVE-2025-40301) * kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once (CVE-2025-40318) * kernel: net: atlantic: fix fragment overflow handling in RX path (CVE-2025-68301) * kernel: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind (CVE-2025-68305) 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 (RHSA-2026:1690) covers a set of 19 vulnerabilities in the Linux kernel affecting Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder and AppStream/BaseOS components. The vulnerabilities include use-after-free bugs (e.g., CVE-2025-37819, CVE-2025-40271), out-of-bounds writes (CVE-2025-38568, CVE-2025-40294), race conditions (CVE-2025-40258, CVE-2025-40318), and information disclosure issues (CVE-2025-40294, CVE-2025-40301). The affected kernel subsystems include irqchip/gic-v2m, RDMA core, eventpoll, io_uring, network scheduling, DRM, Bluetooth HCI and MGMT, vsock, mptcp, devlink, and IPv6. Red Hat has provided patches for these vulnerabilities and recommends updating to the fixed kernel packages and rebooting the system to apply the fixes.
Potential Impact
The vulnerabilities collectively can lead to memory corruption, privilege escalation, denial of service, and information disclosure on affected systems running vulnerable versions of the Linux kernel in Red Hat Enterprise Linux 10. Specific impacts include use-after-free conditions that may allow attackers to execute arbitrary code or escalate privileges, out-of-bounds writes that can cause system instability or data leaks, race conditions that may lead to unpredictable behavior, and information disclosure through Bluetooth subsystems. These issues affect core kernel components, potentially impacting system security and stability.
Mitigation Recommendations
Red Hat has released an official security update (RHSA-2026:1690) that addresses all listed vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10 and related products. Users should apply the update promptly by following Red Hat's update instructions at https://access.redhat.com/articles/11258 and reboot the system to ensure the fixes take effect. No additional mitigation steps are required beyond applying the official patches 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: Linux kernel: irqchip/gic-v2m use-after-free vulnerability (CVE-2025-37819) * kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022) * kernel: Linux kernel use-after-free in eventpoll (CVE-2025-38349) * kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU (CVE-2025-38453) * kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568) * kernel: drm/xe: Fix vm_bind_ioctl double free bug (CVE-2025-38731) * kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154) * kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170) * kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135) * kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158) * kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248) * kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258) * kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy (CVE-2025-40251) * kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271) * 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 in Bluetooth HCI event handling (CVE-2025-40301) * kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once (CVE-2025-40318) * kernel: net: atlantic: fix fragment overflow handling in RX path (CVE-2025-68301) * kernel: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind (CVE-2025-68305) 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 (RHSA-2026:1690) covers a set of 19 vulnerabilities in the Linux kernel affecting Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder and AppStream/BaseOS components. The vulnerabilities include use-after-free bugs (e.g., CVE-2025-37819, CVE-2025-40271), out-of-bounds writes (CVE-2025-38568, CVE-2025-40294), race conditions (CVE-2025-40258, CVE-2025-40318), and information disclosure issues (CVE-2025-40294, CVE-2025-40301). The affected kernel subsystems include irqchip/gic-v2m, RDMA core, eventpoll, io_uring, network scheduling, DRM, Bluetooth HCI and MGMT, vsock, mptcp, devlink, and IPv6. Red Hat has provided patches for these vulnerabilities and recommends updating to the fixed kernel packages and rebooting the system to apply the fixes.
Potential Impact
The vulnerabilities collectively can lead to memory corruption, privilege escalation, denial of service, and information disclosure on affected systems running vulnerable versions of the Linux kernel in Red Hat Enterprise Linux 10. Specific impacts include use-after-free conditions that may allow attackers to execute arbitrary code or escalate privileges, out-of-bounds writes that can cause system instability or data leaks, race conditions that may lead to unpredictable behavior, and information disclosure through Bluetooth subsystems. These issues affect core kernel components, potentially impacting system security and stability.
Mitigation Recommendations
Red Hat has released an official security update (RHSA-2026:1690) that addresses all listed vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10 and related products. Users should apply the update promptly by following Red Hat's update instructions at https://access.redhat.com/articles/11258 and reboot the system to ensure the fixes take effect. No additional mitigation steps are required beyond applying the official patches 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-2026:1690
- Cve Count
- 19
- Additional Cves
- ["CVE-2025-38022","CVE-2025-38349","CVE-2025-38453","CVE-2025-38568","CVE-2025-38731","CVE-2025-40135","CVE-2025-40154","CVE-2025-40158","CVE-2025-40170","CVE-2025-40248","CVE-2025-40251","CVE-2025-40258","CVE-2025-40271","CVE-2025-40294","CVE-2025-40301","CVE-2025-40318","CVE-2025-68301","CVE-2025-68305"]
Threat ID: 6a160977e29bf47b50643b30
Added to database: 05/26/2026, 20:58:31 UTC
Last enriched: 06/22/2026, 17:01:24 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 102
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