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No exploitation reportedFix available

CVE-2023-0458

No exploitation reported by the sources we read.

  • Published2023-04-26
  • Fixed in6.1.8
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

Timeline

dates in UTC
  1. 2023-04-2619:15CVE publishedNVD

Versions per branch

NVD
Linux linux kernel
BranchAffectedFixed in
6.1< 6.1.86.1.8
6.2= 6.2no fix published
Debian debian linux
BranchAffectedFixed in
10.0= 10.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Google, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Linux Kernelother versions: not affected

    package kernelhttps://git.kernel.org

    Affected
    • ≤ 6.1.8no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-05-03

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • bpftoolRed Hat:enterprise_linux:9::baseosall versions · fixed in 0:7.0.0-284.25.1.el9_2and 1 other package
  • bpftoolAlmaLinux:9all versions · fixed in 7.0.0-284.25.1.el9_2
  • bpftool-debuginfoRed Hat:enterprise_linux:9::crball versions · fixed in 0:7.0.0-284.25.1.el9_2
  • bpftool-debuginfoRed Hat:enterprise_linux:9::appstreamall versions · fixed in 0:7.0.0-284.25.1.el9_2
  • kernelRed Hat:rhel_eus:9.0::baseosall versions · fixed in 0:5.14.0-70.70.1.el9_0and 27 other packages
  • kernelRed Hat:rhel_eus:8.8::baseosall versions · fixed in 0:4.18.0-477.43.1.el8_8and 32 other packages
  • kernelRed Hat:rhel_eus:8.6::baseosall versions · fixed in 0:4.18.0-372.91.1.el8_6and 32 other packages
  • kernelRed Hat:enterprise_linux:9::baseosall versions · fixed in 0:5.14.0-284.25.1.el9_2and 42 other packages

123 more package ranges on OSV.dev

Vendor advisories

  • RHSA-2024:0724 Red Hat Product Security129 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2024:0575 Red Hat Product Security120 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2023:7077 Red Hat Product Security120 products fixed

    Red Hat Security Advisory: kernel security, bug fix, and enhancement update

  • RHSA-2023:6901 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

  • RHSA-2023:4801 Red Hat Product Security166 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2023:4814 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: kernel-rt security and bug fix update

2 more advisories

Full record on NVD

Fix

  1. Update Linux linux kernel to 6.1.8
  2. Vendor fix Red Hat Product Security RHSA-2024:0724 · 129 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect.
  3. Workaround from the vendor Red Hat Product Security RHSA-2024:0724 · 129 productsMitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2025-01-30
  • CNACVSS 3.15.3known since 2026-10-23
  • NVDCVSS 3.14.7read 2026-10-23
  • CNAweakness (CWE)CWE-476known since 2026-10-23
  • NVDweakness (CWE)CWE-476read 2026-10-23
  • FIRST EPSSEPSS score0.7 %2026-11-08
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Published
2023-04-26
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-0458?

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

Is CVE-2023-0458 actively exploited?

Active exploitation of CVE-2023-0458 has not been confirmed. Its EPSS score was 0.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-0458?

CVE-2023-0458 has a CVSS v3 base score of 4.7 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

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