media: stm32: dcmi: fix some error handling bugs in probe()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: media: stm32: dcmi: fix some error handling bugs in probe() There are a few issues here: 1) After we assign: chan = dma_request_chan(&pdev->dev, "tx"); Then the error paths need to clean up before returning. The first error path does a direct return. 2) The error paths check "dcmi->mdma_chan" but that is not assigned until later so it results in memory leaks. Test "mdma_chan" instead. 3) The error handling calls dma_release_channel(dcmi->dma_chan) before "dcmi->dma_chan" has been assigned which leads to a NULL pointer dereference. Use the "chan" variable instead. I also moved the call to dma_release_channel() after the call to dma_release_channel() so it mirrors the allocation code better.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From bc901885fae0a0273288666609d143e960b6ad3a · fixed in 4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659; From bc901885fae0a0273288666609d143e960b6ad3a · fixed in f1d1ed39ced825615aeac61f0b6a322178756632
- Linux Linux
7.1
- KernelLinux
From 7.1.0 · fixed in 7.2.6