OESA-2023-1637

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1637
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2023-1637.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2023-1637
Upstream
Published
2023-09-15T11:06:05Z
Modified
2026-08-18T01:17:53Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
kernel security update
Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation.

When route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.

We recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.

(CVE-2023-4206)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

When fw_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.

We recommend upgrading past commit 76e42ae831991c828cffa8c37736ebfb831ad5ec.

(CVE-2023-4207)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

When u32_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.

We recommend upgrading past commit 3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81.

(CVE-2023-4208)

A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.

The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.

We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.

(CVE-2023-4622)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:20.03-LTS-SP1 / kernel

Package

Name
kernel
Purl
pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.19.90-2309.3.0.0218.oe1

Ecosystem specific 

{
    "aarch64": [
        "kernel-debugsource-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "bpftool-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-tools-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "python3-perf-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-tools-devel-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-source-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "perf-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "bpftool-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "python2-perf-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "python2-perf-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "python3-perf-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "perf-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-tools-debuginfo-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-4.19.90-2309.3.0.0218.oe1.aarch64.rpm",
        "kernel-devel-4.19.90-2309.3.0.0218.oe1.aarch64.rpm"
    ],
    "src": [
        "kernel-4.19.90-2309.3.0.0218.oe1.src.rpm"
    ],
    "x86_64": [
        "python3-perf-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-tools-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-debugsource-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-devel-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "perf-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-tools-devel-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "python2-perf-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-tools-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "python2-perf-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "python3-perf-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "perf-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "bpftool-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-source-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "kernel-4.19.90-2309.3.0.0218.oe1.x86_64.rpm",
        "bpftool-debuginfo-4.19.90-2309.3.0.0218.oe1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2023-1637.json"