OESA-2025-1962

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1962
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2025-1962.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2025-1962
Upstream
Published
2025-08-08T11:15:56Z
Modified
2025-09-03T06:31:30.483094Z
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:

perf: Fix sample vs do_exit()

Baisheng Gao reported an ARM64 crash, which Mark decoded as being a synchronous external abort -- most likely due to trying to access MMIO in bad ways.

The crash further shows perf trying to do a user stack sample while in exitmmap()'s tlbfinish_mmu() -- i.e. while tearing down the address space it is trying to access.

It turns out that we stop perf after we tear down the userspace mm; a receipie for disaster, since perf likes to access userspace for various reasons.

Flip this order by moving up where we stop perf in do_exit().

Additionally, harden PERFSAMPLECALLCHAIN and PERFSAMPLESTACKUSER to abort when the current task does not have an mm (exitmm() makes sure to set current->mm = NULL; before commencing with the actual teardown). Such that CPU wide events don't trip on this same problem.(CVE-2025-38424)

Database specific 
{
    "severity": "High"
}
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
0Unknown introduced version / All previous versions are affected
Fixed
4.19.90-2507.5.0.0338.oe2003sp4

Ecosystem specific 

{
    "x86_64": [
        "bpftool-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "bpftool-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-debugsource-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-devel-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-source-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-tools-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-tools-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "kernel-tools-devel-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "perf-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "python2-perf-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "python2-perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "python3-perf-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm",
        "python3-perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.x86_64.rpm"
    ],
    "src": [
        "kernel-4.19.90-2507.5.0.0338.oe2003sp4.src.rpm"
    ],
    "aarch64": [
        "bpftool-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "bpftool-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-debugsource-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-devel-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-source-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-tools-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-tools-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "kernel-tools-devel-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "perf-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "python2-perf-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "python2-perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "python3-perf-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm",
        "python3-perf-debuginfo-4.19.90-2507.5.0.0338.oe2003sp4.aarch64.rpm"
    ]
}