Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: phy: qcom: snps-femto-v2: Fix possible NULL-deref on early runtime suspend Runtime PM must be enabled before creating the PHY, since phy_create() only enables runtime PM on the PHY device if it is already enabled on this parent device. However, the runtime PM callbacks dereference the hsphy instance, which is not yet ready, leaving a window where a suspend callback may trigger a NULL pointer dereference. Take a runtime PM usage reference with pm_runtime_get_noresume() before enabling runtime PM and release it once the PHY has been created, so that no runtime suspend can run before the PHY is ready. This also prevents a short window where an unnecessary runtime suspend can occur. Use the devres-managed version to ensure PM runtime is symmetrically disabled during driver removal for proper cleanup.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0d75f508a9d56133a2834215959cde4605c804d1 before 0c5c08c94dd64c05679970d4eed8b06d36a889a8; affected 0d75f508a9d56133a2834215959cde4605c804d1 before 1027b1d4e29756dfbf74ef8743456a1efa3679f0; affected 0d75f508a9d56133a2834215959cde4605c804d1 before 34293f5a8982a06c40af69c8c7c856b5837ac652; affected 0d75f508a9d56133a2834215959cde4605c804d1 before 3ddf41938fee3d148a170c31e76b0515a522ef7e; affected 0d75f508a9d56133a2834215959cde4605c804d1 before 82cb1aedf4bdb279cf8853fe8f39bec4e6cffa0a; affected 0d75f508a9d56133a2834215959cde4605c804d1 before 61749681e4a3629ec20b04ba2443b91016af3d2f; affected 0d75f508a9d56133a2834215959cde4605c804d1 before b85bbec72fa813b60e093c6bb36ae232b9b0eb5e; affected 0d75f508a9d56133a2834215959cde4605c804d1 before c271a6926ea7d3c9566b033d63fd4e8c488dc860 |
| Linux / Linux | affected 5.9; unaffected 0 before 5.9; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0c5c08c94dd64c05679970d4eed8b06d36a889a8
- https://git.kernel.org/stable/c/1027b1d4e29756dfbf74ef8743456a1efa3679f0
- https://git.kernel.org/stable/c/34293f5a8982a06c40af69c8c7c856b5837ac652
- https://git.kernel.org/stable/c/3ddf41938fee3d148a170c31e76b0515a522ef7e
- https://git.kernel.org/stable/c/82cb1aedf4bdb279cf8853fe8f39bec4e6cffa0a
- https://git.kernel.org/stable/c/61749681e4a3629ec20b04ba2443b91016af3d2f
- https://git.kernel.org/stable/c/b85bbec72fa813b60e093c6bb36ae232b9b0eb5e
- https://git.kernel.org/stable/c/c271a6926ea7d3c9566b033d63fd4e8c488dc860