Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: atomisp: gc2235: fix UAF and memory leak gc2235_probe() handles its error paths incorrectly. If media_entity_pads_init() fails, gc2235_remove() is called, which tears down the subdev and frees dev, but then still falls through to atomisp_register_i2c_module(). This results in use-after-free. If atomisp_register_i2c_module() fails, the media entity and control handler are left initialized and dev is leaked. gc2235_remove() unconditionally calls media_entity_cleanup() and v4l2_ctrl_handler_free(), but these are not initialized at every error path in gc2235_probe(). Replace gc2235_remove() calls in the probe error paths with explicit unwind labels that free only the resources initialized at each point of failure, in reverse order of initialization.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a49d25364dfb9f8a64037488a39ab1f56c5fa419 before 51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654; affected ad85094b293e40e7a2f831b0311a389d952ebd5e before 592a0e78ab08f6373c40912365759d8a066e7711; affected ad85094b293e40e7a2f831b0311a389d952ebd5e before fdbb8e55578b4ab647fa58827a9dd8730d7f4add; affected ad85094b293e40e7a2f831b0311a389d952ebd5e before d57e67ea48e4d095052f2b14d8dd7593621f862f; affected ad85094b293e40e7a2f831b0311a389d952ebd5e before f614bf0a64aa1cb7444d152a96798a6bf1d49e1f; affected ad85094b293e40e7a2f831b0311a389d952ebd5e before 628f763aee0047ff44974388d6f70f75a763026b |
| Linux / Linux | affected 4.12; affected 5.8; unaffected 0 before 4.12; unaffected 4.18 before 5.8; unaffected 6.6.160 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654
- https://git.kernel.org/stable/c/592a0e78ab08f6373c40912365759d8a066e7711
- https://git.kernel.org/stable/c/fdbb8e55578b4ab647fa58827a9dd8730d7f4add
- https://git.kernel.org/stable/c/d57e67ea48e4d095052f2b14d8dd7593621f862f
- https://git.kernel.org/stable/c/f614bf0a64aa1cb7444d152a96798a6bf1d49e1f
- https://git.kernel.org/stable/c/628f763aee0047ff44974388d6f70f75a763026b