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Red Hat released Important kernel updates for RHEL 7 and RHEL for Real Time 7 that remediate nine vulnerabilities, including use-after-free, double-free, out-of-bounds-write, information-disclosure, and local privilege-escalation flaws. The fixes include CVE-2021-3752, a Bluetooth lock_sock_nested() use-after-free condition that a local user could potentially trigger to gain partial privilege escalation. Updated packages are kernel-3.10.0-1160.59.1.el7 for RHEL 7 and kernel-rt-3.10.0-1160.59.1.rt56.1200.el7 for the real-time variant, covering supported x86_64, IBM Z, IBM Power, and related RHEL 7 deployments.
Administrators should install the updates published in RHSA-2022:0620 and RHSA-2022:0622 and reboot affected hosts, as the kernel fixes do not take effect until restart. Red Hat also updated the 3scale-amp2/system-rhel7 container image through RHBA-2022:0679 to incorporate the RHEL 7 security fixes; 3scale API Management users should upgrade that image and rebuild dependent container images.
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12 events from the most recent confirmed update back to the earliest known activity.
Red Hat issued RHBA-2022:0740 updating the 3scale-amp2/3scale-rhel7-operator-metadata container image for Red Hat 3scale API Management Platform 2 on RHEL 7. The image incorporated fixes referenced by RHBA-2022:0679, including CVE-2021-3752, and users were advised to upgrade and rebuild dependent images.
Red Hat issued RHBA-2022:0690 updating the devtools/go-toolset-rhel7 container image for Red Hat Developer Tools. The image incorporated backported fixes from RHSA-2022:0620, including CVE-2021-3752, and users were advised to upgrade and rebuild dependent images.
Red Hat issued RHBA-2022:0679, updating the 3scale-amp2/system-rhel7 container image for Red Hat 3scale API Management Platform 2. The image addressed the kernel security issues covered by RHSA-2022:0620, including CVE-2021-3752; users were advised to upgrade and rebuild dependent images.
Red Hat issued Important advisory RHSA-2022:0622 for RHEL for Real Time 7 and its NFV variant, providing kernel-rt 3.10.0-1160.59.1.rt56.1200.el7. The update addressed CVE-2021-3752 and eight other kernel vulnerabilities and required systems to be rebooted.
Red Hat issued Important advisory RHSA-2022:0620 for RHEL 7, supplying kernel version 3.10.0-1160.59.1.el7. The update remediated CVE-2021-3752 alongside eight other kernel vulnerabilities; affected systems require a reboot.
Marian Rehak described CVE-2022-22942, in which a failed usercopy of a fence_rep object can leave a stale file-descriptor-table entry and allow user space to access a dangling file object. The condition can enable use-after-free exploitation scenarios.
Red Hat tracked CVE-2020-0465, an out-of-bounds write in the Linux kernel's hid-multitouch.c component that may lead to local privilege escalation.
A logic error in the Linux kernel's do_epoll_ctl and ep_loop_check_proc eventpoll paths can cause a use-after-free condition tracked as CVE-2020-0466. The flaw may enable local privilege escalation without additional execution privileges or user interaction; upstream fixes were published in commits a9ed4a6560b8562b7e2e2bed9527e88001f7b682 and 52c479697c9b73f628140dcdfcd39ea302d05482.
Red Hat closed its Bugzilla record tracking CVE-2021-3752 after fixes had been made available through the documented kernel advisories.
Debian included the Bluetooth use-after-free fix in Linux package 5.10.84-1, and Fedora addressed the issue through its 5.15.3 stable-kernel updates.
Wang ShaoBo's fix, "Bluetooth: fix use-after-free error in lock_sock_nested()," was merged into Linux kernel 5.15 as commit 1bff51ea59a9afb67d2dd78518ab0582a54a472c.
KMSAN reported a use-after-free in the Linux Bluetooth subsystem's lock_sock_nested() path during the l2cap_chan_timeout workqueue handler on a Linux 5.12.0-rc6+ kernel in a QEMU virtual machine. The flaw, tracked as CVE-2021-3752, may allow a local user to partially escalate privileges.
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Red Hat released Important-rated Linux kernel updates for RHEL 7 Extended Life Cycle Support, RHEL 8.2 Advanced Update Support, and RHEL 9.0 Update Services for SAP Solutions, including corresponding Real Time kernel packages. The advisories remediate multiple kernel memory-safety and scheduler defects, notably **CVE-2025-38250**, a use-after-free race in the Bluetooth Virtual HCI driver's `vhci_flush()` path, and **CVE-2025-38177**, an unsafe HFSC traffic-control queue notification flaw that could cause repeated state updates and unsafe RB-tree removal. The updates also address double-free, use-after-free, information-disclosure, NFS, ext4, ftrace, AMD TEE, QRTR, and network-scheduler issues, plus **CVE-2022-49991**, in which hugetlb atomic-copy handling could corrupt `page->mapping`. Updated packages include `kernel-3.10.0-1160.137.1.el7` for RHEL 7 ELS, `kernel-4.18.0-193.165.1.el8_2` for RHEL 8.2 AUS, `kernel-rt-3.10.0-1160.137.1.rt56.1289.el7` for RHEL 7 Real Time ELS, and `kernel-rt-5.14.0-70.144.1.rt21.216.el9_0` for RHEL 9 SAP systems; administrators must reboot after installation for the fixes to take effect.
Aug 26, 2026
Red Hat issued Important-rated kernel security updates for multiple Red Hat Enterprise Linux (RHEL) 7 and RHEL 8 support channels. RHSA-2024:1249 updates RHEL 7 to kernel `3.10.0-1160.114.2.el7`, addressing six vulnerabilities including use-after-free flaws in Bluetooth L2CAP, `sch_qfq`, and `nf_tables`; an Intel IGB driver buffer flaw; the `fbcon` console issue tracked as **CVE-2023-38409**; and a `sched/membarrier` flaw. CVE-2023-38409 could leave framebuffer-console mappings pointing to obsolete `fb_info` objects; upstream fixed it in kernel 6.2.12. Additional advisories deliver fixes to specialized RHEL channels: RHSA-2024:0980 updates RHEL 7.6 AUS for Bluetooth, scheduler, and IGB flaws; RHSA-2024:3319 updates RHEL 7.7 AUS for **CVE-2024-1086** in `nf_tables` and Intel Gather Data Sampling (**CVE-2022-40982**); and RHSA-2024:1278 provides a live `kpatch-patch` update for RHEL 8.2 SAP Solutions covering nine kernel vulnerabilities across networking, NVMe, kTLS, and IGB components. Administrators should apply the applicable packages and reboot systems where required; live-patch deployments should follow Red Hat’s kpatch update procedure.
Aug 26, 2026
Red Hat released **RHSA-2024:2004** for standard Red Hat Enterprise Linux 7 kernels and **RHSA-2024:2003** for RHEL for Real Time 7, addressing five vulnerabilities: `CVE-2020-36558`, `CVE-2023-2002`, `CVE-2023-25775`, `CVE-2023-4622`, and `CVE-2023-4623`. The flaws include use-after-free conditions in `unix_stream_sendpage` and `sch_hfsc`, unauthorized Bluetooth management-command execution, improper access control in `irdma`, and a race in the `VT_RESIZEX` ioctl handler that can trigger a NULL-pointer dereference and crash a system. The standard RHEL 7 advisory provides kernel version `3.10.0-1160.118.1.el7`; the Real Time advisory affects RHEL for Real Time, Real Time for NFV, and eligible x86_64 Extended Life Cycle Support deployments. Red Hat previously tracked the VT console issue as `CVE-2020-36558`, affecting kernels before 5.5.7, and had also issued RHEL 8 fixes through earlier kernel updates. Administrators should apply applicable prerequisite errata and updated kernel packages, then reboot systems for the mitigations to take effect.
Aug 26, 2026