{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43007","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.974Z","datePublished":"2026-05-01T14:15:14.914Z","dateUpdated":"2026-05-11T22:15:54.042Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:15:54.042Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Handle DBC deactivation if the owner went away\n\nWhen a DBC is released, the device sends a QAIC_TRANS_DEACTIVATE_FROM_DEV\ntransaction to the host over the QAIC_CONTROL MHI channel. QAIC handles\nthis by calling decode_deactivate() to release the resources allocated for\nthat DBC. Since that handling is done in the qaic_manage_ioctl() context,\nif the user goes away before receiving and handling the deactivation, the\nhost will be out-of-sync with the DBCs available for use, and the DBC\nresources will not be freed unless the device is removed. If another user\nloads and requests to activate a network, then the device assigns the same\nDBC to that network, QAIC will \"indefinitely\" wait for dbc->in_use = false,\nleading the user process to hang.\n\nAs a solution to this, handle QAIC_TRANS_DEACTIVATE_FROM_DEV transactions\nthat are received after the user has gone away."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/qaic/qaic_control.c"],"versions":[{"version":"129776ac2e38231fa9c02ce20e116c99de291666","lessThan":"2dd67966f39a2abf8ccb4865031c722e40e01b7f","status":"affected","versionType":"git"},{"version":"129776ac2e38231fa9c02ce20e116c99de291666","lessThan":"08021f2d4a557d6491e3bcc288e96425f50aa3cf","status":"affected","versionType":"git"},{"version":"129776ac2e38231fa9c02ce20e116c99de291666","lessThan":"f403094d9075d7c565a3d81002b781c325cb3c07","status":"affected","versionType":"git"},{"version":"129776ac2e38231fa9c02ce20e116c99de291666","lessThan":"ee0180e77e6c8482644569632065411de844c515","status":"affected","versionType":"git"},{"version":"129776ac2e38231fa9c02ce20e116c99de291666","lessThan":"2feec5ae5df785658924ab6bd91280dc3926507c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/qaic/qaic_control.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.134","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.81","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.22","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.12","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2dd67966f39a2abf8ccb4865031c722e40e01b7f"},{"url":"https://git.kernel.org/stable/c/08021f2d4a557d6491e3bcc288e96425f50aa3cf"},{"url":"https://git.kernel.org/stable/c/f403094d9075d7c565a3d81002b781c325cb3c07"},{"url":"https://git.kernel.org/stable/c/ee0180e77e6c8482644569632065411de844c515"},{"url":"https://git.kernel.org/stable/c/2feec5ae5df785658924ab6bd91280dc3926507c"}],"title":"accel/qaic: Handle DBC deactivation if the owner went away","x_generator":{"engine":"bippy-1.2.0"}}}}