OESA-2026-1504

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1504

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-1504.json

JSON Data

https://api.test.osv.dev/v1/vulns/OESA-2026-1504

Upstream

CVE-2023-53577

CVE-2026-23216

Published

2026-03-06T11:10:31Z

Modified

2026-08-18T01:19:42Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

bpf, cpumap: Make sure kthread is running before map update returns

The following warning was reported when running stress-mode enabled xdp_redirect_cpu with some RT threads:

------------[ cut here ]------------ WARNING: CPU: 4 PID: 65 at kernel/bpf/cpumap.c:135 CPU: 4 PID: 65 Comm: kworker/4:1 Not tainted 6.5.0-rc2+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Workqueue: events cpu_map_kthread_stop RIP: 0010:put_cpu_map_entry+0xda/0x220 ...... Call Trace: <TASK> ? show_regs+0x65/0x70 ? __warn+0xa5/0x240 ...... ? put_cpu_map_entry+0xda/0x220 cpu_map_kthread_stop+0x41/0x60 process_one_work+0x6b0/0xb80 worker_thread+0x96/0x720 kthread+0x1a5/0x1f0 ret_from_fork+0x3a/0x70 ret_from_fork_asm+0x1b/0x30 </TASK>

The root cause is the same as commit 436901649731 ("bpf: cpumap: Fix memory leak in cpu_map_update_elem"). The kthread is stopped prematurely by kthread_stop() in cpu_map_kthread_stop(), and kthread() doesn't call cpu_map_kthread_run() at all but XDP program has already queued some frames or skbs into ptr_ring. So when __cpu_map_ring_cleanup() checks the ptr_ring, it will find it was not emptied and report a warning.

An alternative fix is to use __cpu_map_ring_cleanup() to drop these pending frames or skbs when kthread_stop() returns -EINTR, but it may confuse the user, because these frames or skbs have been handled correctly by XDP program. So instead of dropping these frames or skbs, just make sure the per-cpu kthread is running before __cpu_map_entry_alloc() returns.

After apply the fix, the error handle for kthread_stop() will be unnecessary because it will always return 0, so just remove it.(CVE-2023-53577)

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().(CVE-2026-23216)

Database specific

{
    "severity": "Medium"
}

References

Affected packages

openEuler:20.03-LTS-SP4 / kernel

Package

Name: kernel
Purl: pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

4.19.90-2603.1.0.0364.oe2003sp4

Ecosystem specific

{
    "aarch64": [
        "bpftool-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "bpftool-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-debugsource-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-devel-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-source-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-tools-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-tools-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "kernel-tools-devel-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "perf-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "python2-perf-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "python2-perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "python3-perf-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm",
        "python3-perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.aarch64.rpm"
    ],
    "src": [
        "kernel-4.19.90-2603.1.0.0364.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "bpftool-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "bpftool-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-debugsource-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-devel-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-source-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-tools-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-tools-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "kernel-tools-devel-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "perf-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "python2-perf-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "python2-perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "python3-perf-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm",
        "python3-perf-debuginfo-4.19.90-2603.1.0.0364.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-1504.json"