Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Move unregister out of atomic section Commit '9329933699b3 ("soc: qcom: pmic_glink: Make client-lock non-sleeping")' moved the pmic_glink client list under a spinlock, as it is accessed by the rpmsg/glink callback, which in turn is invoked from IRQ context. This means that ucsi_unregister() is now called from atomic context, which isn't feasible as it's expecting a sleepable context. An effort is under way to get GLINK to invoke its callbacks in a sleepable context, but until then lets schedule the unregistration. A side effect of this is that ucsi_unregister() can now happen after the remote processor, and thereby the communication link with it, is gone. pmic_glink_send() is amended with a check to avoid the resulting NULL pointer dereference. This does however result in the user being informed about this error by the following entry in the kernel log: ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: failed to send UCSI write request: -5
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fbadcde1572f6b00e1e343d8b24ec8bf7f3ec08d before 1e3769aa0946c2b6e509c06d7a0aa9b955eaef9e; affected 9329933699b32d467a99befa20415c4b2172389a before 095b0001aefddcd9361097c971b7debc84e72714; affected 9329933699b32d467a99befa20415c4b2172389a before 11bb2ffb679399f99041540cf662409905179e3a; affected 8d62ab7d89a4906385ea8c11a4b2475578bec0f0; affected bd54d7c8e76d235b4a70be3a545eb13f5ac531e4; affected 6.6.33 before 6.6.130; affected 6.8.12 before 6.9; affected 6.9.3 before 6.10 |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.6.130 through 6.6.*; unaffected 6.10.8 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1e3769aa0946c2b6e509c06d7a0aa9b955eaef9e
- https://git.kernel.org/stable/c/095b0001aefddcd9361097c971b7debc84e72714
- https://git.kernel.org/stable/c/11bb2ffb679399f99041540cf662409905179e3a
ADP enrichment
No English description supplied.
No references supplied.