kernel: ipc: limit next_id allocation to the valid ID range

A flaw was found in the Linux kernel. The ipcidralloc function, used in the checkpoint/restore path for SysV Inter-Process Communication IPC ID allocation, does not properly limit ID allocation to the valid range. This can result in the system attempting to dereference freed memory, leading to a...

Important: kernel6.12

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: clear page-private in freepagesprepare CVE-2026-43303 In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks CVE-2026-45850 In the Linux...

OESA-2026-2929 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently...

SUSE CVE-2026-52923

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

UBUNTU-CVE-2026-52923

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

CVE-2026-52923

The CVE-2026-52923 issue affects the Linux kernel IPC ID allocation in the checkpoint/restore path. ipc_idr_alloc() forwards the next_id request to idr_alloc() with an open-ended upper bound, so if the valid SysV IPC id tail is full the allocation can spill past ipc_mni. The encoded id may then r...

EUVD-2026-38726

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

CVE-2026-52923

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

PT-2026-51716

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the checkpoint/restore sysctl path where the ipc idr alloc function forwards requests to idr alloc with an open-ended upper bound. When the valid SysV IPC id space is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: landlock: Fixed the warning from KUnit tests getidrange expects a positive value as its first argument, but getrandomu8 may return 0. This issue was fixed by clamping the value. The fix was validated by running the test 1,000...

SUSE CVE-2025-71100

In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cutxfilldesc TID getting from ieee80211gettid might be out of range of array size of staentry-tids, so check TID is less than MAXTIDCOUNT. Othwerwise, UBSAN warn: UBSAN:...

CVE-2019-2301

Possibility of out-of-bound read if id received from SPI is not in range of FIFO in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in IPQ4019, IPQ8064, MSM8909W,...

SUSE CVE-2025-38651

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests getidrange expects a positive value as first argument but getrandomu8 can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX is wron...

CVE-2025-38651

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests getidrange expects a positive value as first argument but getrandomu8 can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX is wron...

CVE-2025-38651

Summary: CVE-2025-38651 concerns the Linux kernel landlock component. A bug in get_id_range() could receive a non-positive value because get_random_u8() may return 0, triggering an unsafe first argument. The fix clamps the value to ensure positivity. The vulnerability was discussed in kernel-land...

CVE-2025-38651 landlock: Fix warning from KUnit tests

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests getidrange expects a positive value as first argument but getrandomu8 can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX is wron...

CVE-2025-38651

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests getidrange expects a positive value as first argument but getrandomu8 can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX is wron...

PT-2025-34412 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 6.16.0-rc1-dev-00001-g314a2f98b65f and earlier Description: A flaw was identified in the Linux kernel related to landlock functionality. Specifically, the get id range function was susceptible to receiving a zero value a...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from the landlock KUnit test where getidrange may receive a value of 0, resulting in a warning...

UBUNTU-CVE-2024-42133

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Ignore too large handle values in BIG hcilebigsyncestablishedevt is necessary to filter out cases where the handle value is belonging to ida id range, otherwise ida will be erroneously released in hciconncleanup...