dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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: dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Fix a critical memory allocation bug in edma_setup_from_hw() where queue_priority_map was allocated with insufficient memory. The code declared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8), but allocated memory using sizeof(s8) instead of the correct size. This caused out-of-bounds memory writes when accessing: queue_priority_map[i][0] = i; queue_priority_map[i][1] = i; The bug manifested as kernel crashes with "Oops - undefined instruction" on ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the memory corruption triggered kernel hardening features on Clang. Change the allocation to use sizeof(*queue_priority_map) which automatically gets the correct size for the 2D array structure.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.4
References 8
git.kernel.org
- stable/c/7d4de60d6db02d9b01d5890d5156b04fad65d07a
- stable/c/d722de80ce037dccf6931e778f4a46499d51bdf9
- stable/c/301a96cc4dc006c9a285913d301e681cfbf7edb6
- stable/c/5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93
- stable/c/1baed10553fc8b388351d8fc803e3ae6f1a863bc
- stable/c/069fd1688c57c0cc8a3de64d108579b31676f74b
- stable/c/d5e82f3f2c918d446df46e8d65f8083fd97cdec5
- stable/c/e63419dbf2ceb083c1651852209c7f048089ac0f