Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: phy: ti: tusb1210: Resolve charger-det crash if charger psy is unregistered The power_supply frame-work is not really designed for there to be long living in kernel references to power_supply devices. Specifically unregistering a power_supply while some other code has a reference to it triggers a WARN in power_supply_unregister(): WARN_ON(atomic_dec_return(&psy->use_cnt)); Folllowed by the power_supply still getting removed and the backing data freed anyway, leaving the tusb1210 charger-detect code with a dangling reference, resulting in a crash the next time tusb1210_get_online() is called. Fix this by only holding the reference in tusb1210_get_online() freeing it at the end of the function. Note this still leaves a theoretical race window, but it avoids the issue when manually rmmod-ing the charger chip driver during development.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 48969a5623ed918713552e2b4f9d391c89b5e838 before 25b3498485ac281e5851700e33b97f12c9533fd8; affected 48969a5623ed918713552e2b4f9d391c89b5e838 before 73224a5d2180066c7fe05b4656647601ba08d588; affected 48969a5623ed918713552e2b4f9d391c89b5e838 before 9827caa5105fb16d1fae2e75c8d0e4662014b3ca; affected 48969a5623ed918713552e2b4f9d391c89b5e838 before bf6e4ee5c43690e4c5a8a057bbcd4ff986bed052 |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.1.90 through 6.1.*; unaffected 6.6.30 through 6.6.*; unaffected 6.8.9 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/25b3498485ac281e5851700e33b97f12c9533fd8
- https://git.kernel.org/stable/c/73224a5d2180066c7fe05b4656647601ba08d588
- https://git.kernel.org/stable/c/9827caa5105fb16d1fae2e75c8d0e4662014b3ca
- https://git.kernel.org/stable/c/bf6e4ee5c43690e4c5a8a057bbcd4ff986bed052
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.