CVE-2022-48803

Kernel crash via unterminated clock divider table

Published Jul 16, 2024 · Updated Aug 5, 2026

Out-of-bounds read in the Linux TI J721E PHY driver allows local users to crash the kernel during PHY initialization. The clk_div_table array in phy-j721e-wiz.c lacks a zero-divisor sentinel, so _get_table_maxdiv walks past its end while finding the maximum divider. The path is limited to affected TI K3/J721E hardware and runs during deferred PCIe probe or PHY resume, where the invalid read can halt kernel operation.

CVSS severity5.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux TI J721E PHY driver allows local users to crash the kernel during PHY initialization. The clk_div_table array in phy-j721e-wiz.c lacks a zero-divisor sentinel, so _get_table_maxdiv walks past its end while finding the maximum divider. The path is limited to affected TI K3/J721E hardware and runs during deferred PCIe probe or PHY resume, where the invalid read can halt kernel operation.

The record

CVE
CVE-2022-48803
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=091876cc355d6739e393efa4b3d07f451a6a035c <3c75d1017cb362b6a4e0935746ef5da28250919f
  2. Affected versionversion=091876cc355d6739e393efa4b3d07f451a6a035c <5b0c9569135a37348c1267c81e8b0274b21a86ed
  3. Affected versionversion=091876cc355d6739e393efa4b3d07f451a6a035c <6d1e6bcb31663ee83aaea1f171f3dbfe95dd4a69
  4. Affected versionversion=091876cc355d6739e393efa4b3d07f451a6a035c <7a360e546ad9e7c3fd53d6bb60348c660cd28f54
  5. Affected versionversion=5.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=091876cc355d6739e393efa4b3d07f451a6a035c <3c75d1017cb362b6a4e0935746ef5da28250919f; version=091876cc355d6739e393efa4b3d07f451a6a035c <5b0c9569135a37348c1267c81e8b0274b21a86ed; version=091876cc355d6739e393efa4b3d07f451a6a035c <6d1e6bcb31663ee83aaea1f171f3dbfe95dd4a69; version=091876cc355d6739e393efa4b3d07f451a6a035c <7a360e546ad9e7c3fd53d6bb60348c660cd28f54; version=5.6

Published CVSS scores

7.3Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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