CVE-2026-72391
CVE CVE-2026-72391EUVD EUVD-2026-59290Published 2026-08-15T05:56:19.000ZLast changed 2026-08-17T05:13:45.000Z
What the advisory describes
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().
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.12.97; patch: 6.6.145; e85b1347ace677c3822c12d9332dfaaffe594da6 <3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742; patch: 7.1.5; e85b1347ace677c3822c12d9332dfaaffe594da6 <d2c37f26d1a37f8177be5f354537f8ee3ec31cc2; e85b1347ace677c3822c12d9332dfaaffe594da6 <92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5; e85b1347ace677c3822c12d9332dfaaffe594da6 <8f31efff9206f9f0adb853cad6916086aac4d5ef; e85b1347ace677c3822c12d9332dfaaffe594da6 <86d379fcf1b79bdf4bc2ac891297f30f63d041d8; patch: 0; 6.1; patch: 6.18.40; patch: 6.1.178; e85b1347ace677c3822c12d9332dfaaffe594da6 <2381bf3f484e8e4fd89a225445872ec14e036ab5; patch: 7.2
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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