{"id":"CVE-2026-53210","state":"PUBLISHED","title":"tee: shm: fix shm leak in register_shm_helper()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntee: shm: fix shm leak in register_shm_helper()\n\nregister_shm_helper() allocates shm before calling\niov_iter_npages(). If iov_iter_npages() returns 0, the function\njumps to err_ctx_put and leaks shm.\n\nThis can be triggered by TEE_IOC_SHM_REGISTER with\nstruct tee_ioctl_shm_register_data where length is 0.\n\nJump to err_free_shm instead.","publishedAt":"2026-06-25T08:39:15.569Z","updatedAt":"2026-06-25T08:39:15.569Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"4277759906b44d923a38c8f59f5576501b187b0d","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"c10c9c48b2903f41ed4c532043b0576e86228236","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"dbf779db927414f5b37c1f666013e9b48a88cfde","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"26682f5efc276e3ad96d102019472bfbf03833b2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/tee_shm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/tee_shm.c"]}],"references":["https://git.kernel.org/stable/c/4277759906b44d923a38c8f59f5576501b187b0d","https://git.kernel.org/stable/c/c10c9c48b2903f41ed4c532043b0576e86228236","https://git.kernel.org/stable/c/dbf779db927414f5b37c1f666013e9b48a88cfde","https://git.kernel.org/stable/c/26682f5efc276e3ad96d102019472bfbf03833b2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53210.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53210","state":"PUBLISHED","datePublished":"2026-06-25T08:39:15.569Z","dateUpdated":"2026-06-25T08:39:15.569Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.391Z"},"containers":{"cna":{"title":"tee: shm: fix shm leak in register_shm_helper()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntee: shm: fix shm leak in register_shm_helper()\n\nregister_shm_helper() allocates shm before calling\niov_iter_npages(). If iov_iter_npages() returns 0, the function\njumps to err_ctx_put and leaks shm.\n\nThis can be triggered by TEE_IOC_SHM_REGISTER with\nstruct tee_ioctl_shm_register_data where length is 0.\n\nJump to err_free_shm instead."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"4277759906b44d923a38c8f59f5576501b187b0d","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"c10c9c48b2903f41ed4c532043b0576e86228236","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"dbf779db927414f5b37c1f666013e9b48a88cfde","versionType":"git"},{"version":"7bdee41575919773818e525ea19e54eb817770af","status":"affected","lessThan":"26682f5efc276e3ad96d102019472bfbf03833b2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/tee_shm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/tee_shm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4277759906b44d923a38c8f59f5576501b187b0d"},{"url":"https://git.kernel.org/stable/c/c10c9c48b2903f41ed4c532043b0576e86228236"},{"url":"https://git.kernel.org/stable/c/dbf779db927414f5b37c1f666013e9b48a88cfde"},{"url":"https://git.kernel.org/stable/c/26682f5efc276e3ad96d102019472bfbf03833b2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-25T08:39:15.569Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}