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Review reviewHigh

CVE-2022-48754

Linux Linux, linux_kernel, linux kernel

In the Linux kernel, the following vulnerability has been resolved: phylib: fix potential use-after-free Commit bafbdd527d56 ("phylib: Add device reset GPIO support") added call to phy_device_reset(phydev) after the put_device() call in phy_detach(). The comment before the put_device() call says that the phydev might go away with put_device(). Fix potential use-after-free by calling phy_device_reset() before put_device().

CVSS
7.8
EPSS
0.23%
13.4% percentile
CISA KEV
Not listed
Published
2024.06.20
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.23%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: phylib: fix potential use-after-free Commit bafbdd527d56 ("phylib: Add device reset GPIO support") added call to phy_device_reset(phydev) after the put_device() call in phy_detach(). The comment before the put_device() call says that the phydev might go away with put_device(). Fix potential use-after-free by calling phy_device_reset() before put_device().

Affected product and versions

Product
Linux Linux, linux_kernel, linux kernel
Affected versions
>= bafbdd527d569c8200521f2f7579f65a044271be < 67d271760b037ce0806d687ee6057edc8afd4205, >= bafbdd527d569c8200521f2f7579f65a044271be < f39027cbada43b33566c312e6be3db654ca3ad17, >= bafbdd527d569c8200521f2f7579f65a044271be < bd024e36f68174b1793906c39ca16cee0c9295c2, >= bafbdd527d569c8200521f2f7579f65a044271be < aefaccd19379d6c4620269a162bfb88ff687f289, >= bafbdd527d569c8200521f2f7579f65a044271be < cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af, >= bafbdd527d569c8200521f2f7579f65a044271be < cbda1b16687580d5beee38273f6241ae3725960c, >= 4.16, >= bafbdd527d56 < 67d271760b03, >= bafbdd527d56 < f39027cbada4, >= bafbdd527d56 < bd024e36f681, >= bafbdd527d56 < aefaccd19379, >= bafbdd527d56 < cb2fab10fc5e, >= bafbdd527d56 < cbda1b166875, >= 4.16 < 4.19.228, >= 4.20 < 5.4.176, >= 5.5 < 5.10.96, >= 5.11 < 5.15.19, >= 5.16 < 5.16.5, 5.17
Fixed versions
4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux_kernel, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416