Answer in brief
CVE-2026-72391 records a Unknown severity vulnerability in net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e85b1347ace677c3822c12d9332dfaaffe594da6 <92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <d2c37f26d1a37f8177be5f354537f8ee3ec31cc2 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <86d379fcf1b79bdf4bc2ac891297f30f63d041d8 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <2381bf3f484e8e4fd89a225445872ec14e036ab5 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <8f31efff9206f9f0adb853cad6916086aac4d5ef | 92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5, d2c37f26d1a37f8177be5f354537f8ee3ec31cc2, 3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742, 86d379fcf1b79bdf4bc2ac891297f30f63d041d8, 2381bf3f484e8e4fd89a225445872ec14e036ab5, 8f31efff9206f9f0adb853cad6916086aac4d5ef |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy sfp_i2c_mdiobus_create() allocates the I2C MDIO bus with mdio_i2c_alloc(), a plain (non-devm) allocation, and registers it. sfp_i2c_mdiobus_destroy() only unregisters the bus and clears sfp->i2c_mii without calling mdiobus_free(). As the only reference to the bus is then cleared, the struct mii_bus is leaked. This is hit whenever a copper/RollBall SFP module that instantiated an MDIO bus is removed: sfp_sm_main() takes the global teardown path and calls sfp_i2c_mdiobus_destroy(). sfp_cleanup(), on driver unbind, frees sfp->i2c_mii directly, which is why the leak only triggered on module hot-removal and not on unbind. Free the bus in sfp_i2c_mdiobus_destroy() to match the allocation done in sfp_i2c_mdiobus_create().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72391 records a Unknown severity vulnerability in net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e85b1347ace677c3822c12d9332dfaaffe594da6 <92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <d2c37f26d1a37f8177be5f354537f8ee3ec31cc2 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <86d379fcf1b79bdf4bc2ac891297f30f63d041d8 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <2381bf3f484e8e4fd89a225445872ec14e036ab5 || >=e85b1347ace677c3822c12d9332dfaaffe594da6 <8f31efff9206f9f0adb853cad6916086aac4d5ef | 92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5, d2c37f26d1a37f8177be5f354537f8ee3ec31cc2, 3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742, 86d379fcf1b79bdf4bc2ac891297f30f63d041d8, 2381bf3f484e8e4fd89a225445872ec14e036ab5, 8f31efff9206f9f0adb853cad6916086aac4d5ef |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy sfp_i2c_mdiobus_create() allocates the I2C MDIO bus with mdio_i2c_alloc(), a plain (non-devm) allocation, and registers it. sfp_i2c_mdiobus_destroy() only unregisters the bus and clears sfp->i2c_mii without calling mdiobus_free(). As the only reference to the bus is then cleared, the struct mii_bus is leaked. This is hit whenever a copper/RollBall SFP module that instantiated an MDIO bus is removed: sfp_sm_main() takes the global teardown path and calls sfp_i2c_mdiobus_destroy(). sfp_cleanup(), on driver unbind, frees sfp->i2c_mii directly, which is why the leak only triggered on module hot-removal and not on unbind. Free the bus in sfp_i2c_mdiobus_destroy() to match the allocation done in sfp_i2c_mdiobus_create().
Quoted source text, attributed separately from HOL analysis.