PT-2026-52257
CVE-2026-53161
·
Published
2026-06-25
·
Updated
2026-10-13
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists between
fastrpc device release() and the workqueue processing DSP responses. When a user closes a file descriptor, fastrpc device release() frees the fastrpc user structure. Simultaneously, an active DSP invocation may complete, leading fastrpc rpmsg callback() to schedule cleanup via schedule work(&ctx->put work). If fastrpc context free() executes while or after the fastrpc user structure is freed, it results in a use-after-free scenario. This can trigger failures in the following functions:fastrpc buf free()when callingfastrpc ipa to dma addr()to process the IOVA (Input-Output Virtual Address).fastrpc free map()when readingvmperms[0].vmidto reconstruct a permission bitmask forqcom scm assign mem().fastrpc free map()when acquiringmap->fl->lockto remove a map node.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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