{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31730","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.135Z","datePublished":"2026-05-01T14:14:29.522Z","dateUpdated":"2026-05-11T22:14:39.132Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:14:39.132Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: possible double-free of cctx->remote_heap\n\nfastrpc_init_create_static_process() may free cctx->remote_heap on the\nerr_map path but does not clear the pointer. Later, fastrpc_rpmsg_remove()\nfrees cctx->remote_heap again if it is non-NULL, which can lead to a\ndouble-free if the INIT_CREATE_STATIC ioctl hits the error path and the rpmsg\ndevice is subsequently removed/unbound.\nClear cctx->remote_heap after freeing it in the error path to prevent the\nlater cleanup from freeing it again.\n\nThis issue was found by an in-house analysis workflow that extracts AST-based\ninformation and runs static checks, with LLM assistance for triage, and was\nconfirmed by manual code review.\nNo hardware testing was performed."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/fastrpc.c"],"versions":[{"version":"0871561055e666da421d779397efcc1e5e964cab","lessThan":"4b8e527aca357a6488680713bd88007cf8f547fe","status":"affected","versionType":"git"},{"version":"0871561055e666da421d779397efcc1e5e964cab","lessThan":"0bdee4118340c5a756220c1b29a7dab86bb0aa65","status":"affected","versionType":"git"},{"version":"0871561055e666da421d779397efcc1e5e964cab","lessThan":"3a164f640953cc982804746e772d379171aff5c6","status":"affected","versionType":"git"},{"version":"0871561055e666da421d779397efcc1e5e964cab","lessThan":"f67d368d26764a357691b2b3a33d3cb55b435bfc","status":"affected","versionType":"git"},{"version":"0871561055e666da421d779397efcc1e5e964cab","lessThan":"ba2c83167b215da30fa2aae56b140198cf8d8408","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/misc/fastrpc.c"],"versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","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":"6.2","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe"},{"url":"https://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65"},{"url":"https://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6"},{"url":"https://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc"},{"url":"https://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408"}],"title":"misc: fastrpc: possible double-free of cctx->remote_heap","x_generator":{"engine":"bippy-1.2.0"}}}}