CVE-2025-21746 (GCVE-0-2025-21746)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:12 – Updated: 2025-05-04 07:20
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: synaptics - fix crash when enabling pass-through port When enabling a pass-through port an interrupt might come before psmouse driver binds to the pass-through port. However synaptics sub-driver tries to access psmouse instance presumably associated with the pass-through port to figure out if only 1 byte of response or entire protocol packet needs to be forwarded to the pass-through port and may crash if psmouse instance has not been attached to the port yet. Fix the crash by introducing open() and close() methods for the port and check if the port is open before trying to access psmouse instance. Because psmouse calls serio_open() only after attaching psmouse instance to serio port instance this prevents the potential crash.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 100e16959c3ca8cb7be788ed3e2c5867481f35f6 , < a2cbcd70133dc0d4d4c95ad4cd5412b935354c7c (git)
Affected: 100e16959c3ca8cb7be788ed3e2c5867481f35f6 , < 3e179d3f1ada963475395d81bfe91daef4d1a24c (git)
Affected: 100e16959c3ca8cb7be788ed3e2c5867481f35f6 , < 87da1ea93ec9f9f0004e5b12e78789bc94e360bf (git)
Affected: 100e16959c3ca8cb7be788ed3e2c5867481f35f6 , < 08bd5b7c9a2401faabdaa1472d45c7de0755fd7e (git)
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    Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.80 , ≤ 6.6.* (semver)
Unaffected: 6.12.17 , ≤ 6.12.* (semver)
Unaffected: 6.13.3 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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            "drivers/input/mouse/synaptics.c",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics - fix crash when enabling pass-through port\n\nWhen enabling a pass-through port an interrupt might come before psmouse\ndriver binds to the pass-through port. However synaptics sub-driver\ntries to access psmouse instance presumably associated with the\npass-through port to figure out if only 1 byte of response or entire\nprotocol packet needs to be forwarded to the pass-through port and may\ncrash if psmouse instance has not been attached to the port yet.\n\nFix the crash by introducing open() and close() methods for the port and\ncheck if the port is open before trying to access psmouse instance.\nBecause psmouse calls serio_open() only after attaching psmouse instance\nto serio port instance this prevents the potential crash."
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    "datePublished": "2025-02-27T02:12:18.477Z",
    "dateReserved": "2024-12-29T08:45:45.758Z",
    "dateUpdated": "2025-05-04T07:20:14.042Z",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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