{"api_version":"1","generated_at":"2026-08-19T14:45:36+00:00","cve":"CVE-2026-72048","urls":{"html":"https://cve.report/CVE-2026-72048","api":"https://cve.report/api/cve/CVE-2026-72048.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72048","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72048"},"summary":{"title":"ieee802154: ca8210: fix cas_ctl leak on spi_async failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: ca8210: fix cas_ctl leak on spi_async failure\n\nca8210_spi_transfer() allocates cas_ctl with kzalloc_obj(GFP_ATOMIC)\nand relies entirely on the SPI completion callback\nca8210_spi_transfer_complete() to free it.\n\nThe spi_async() API only invokes the completion callback on successful\nsubmission.  On failure it returns a negative error code without ever\nqueuing the callback, which leaves cas_ctl and its embedded spi_message\nand spi_transfer orphaned.  Every kfree(cas_ctl) in the driver is\ninside the completion callback, so there is no other reclamation path.\n\nca8210_spi_transfer() is called from ca8210_spi_exchange(), the\ninterrupt handler ca8210_interrupt_handler(), and from the retry path\ninside the completion callback itself.  The exchange and interrupt\nhandler paths loop on -EBUSY, so under sustained SPI bus contention\nevery retry iteration leaks a fresh cas_ctl (~600 bytes per\noccurrence).\n\nFix it by freeing cas_ctl on the spi_async() error path.  While here,\ncorrect the misleading error string: the function calls spi_async(),\nnot spi_sync().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:14","updated_at":"2026-08-17 06:18:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e09390e439bd7cca30dd10893b1f64802961667a","name":"https://git.kernel.org/stable/c/e09390e439bd7cca30dd10893b1f64802961667a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/460c5cd51e4d7d15b317f178f42cfcb666c0fe91","name":"https://git.kernel.org/stable/c/460c5cd51e4d7d15b317f178f42cfcb666c0fe91","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b9071dc7889bef42590e04fbf3e56cc65e1e5e6e","name":"https://git.kernel.org/stable/c/b9071dc7889bef42590e04fbf3e56cc65e1e5e6e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe90605b651573d30be8293ff5be40e3d7023117","name":"https://git.kernel.org/stable/c/fe90605b651573d30be8293ff5be40e3d7023117","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d4a397fe803c2d157f6ebb068b802ef75fbf109e","name":"https://git.kernel.org/stable/c/d4a397fe803c2d157f6ebb068b802ef75fbf109e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b07aea90dbc6e188c74c100af64b77b9482ffc65","name":"https://git.kernel.org/stable/c/b07aea90dbc6e188c74c100af64b77b9482ffc65","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7e3630fbb6aabb844bbf35746dee0bf3894100c7","name":"https://git.kernel.org/stable/c/7e3630fbb6aabb844bbf35746dee0bf3894100c7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cb5cca1d2a908ddd5e357971de0f2009617b8d6a","name":"https://git.kernel.org/stable/c/cb5cca1d2a908ddd5e357971de0f2009617b8d6a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72048","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72048","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ded845a781a578dfb0b5b2c138e5a067aa3b1242 460c5cd51e4d7d15b317f178f42cfcb666c0fe91 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ded845a781a578dfb0b5b2c138e5a067aa3b1242 b07aea90dbc6e188c74c100af64b77b9482ffc65 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ded845a781a578dfb0b5b2c138e5a067aa3b1242 fe90605b651573d30be8293ff5be40e3d7023117 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ded845a781a578dfb0b5b2c138e5a067aa3b1242 b9071dc7889bef42590e04fbf3e56cc65e1e5e6e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72048","cve":"CVE-2026-72048","epss":"0.002100000","percentile":"0.115350000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ieee802154/ca8210.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"460c5cd51e4d7d15b317f178f42cfcb666c0fe91","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"b07aea90dbc6e188c74c100af64b77b9482ffc65","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"fe90605b651573d30be8293ff5be40e3d7023117","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"b9071dc7889bef42590e04fbf3e56cc65e1e5e6e","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"d4a397fe803c2d157f6ebb068b802ef75fbf109e","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"cb5cca1d2a908ddd5e357971de0f2009617b8d6a","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"7e3630fbb6aabb844bbf35746dee0bf3894100c7","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"},{"lessThan":"e09390e439bd7cca30dd10893b1f64802961667a","status":"affected","version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ieee802154/ca8210.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: ca8210: fix cas_ctl leak on spi_async failure\n\nca8210_spi_transfer() allocates cas_ctl with kzalloc_obj(GFP_ATOMIC)\nand relies entirely on the SPI completion callback\nca8210_spi_transfer_complete() to free it.\n\nThe spi_async() API only invokes the completion callback on successful\nsubmission.  On failure it returns a negative error code without ever\nqueuing the callback, which leaves cas_ctl and its embedded spi_message\nand spi_transfer orphaned.  Every kfree(cas_ctl) in the driver is\ninside the completion callback, so there is no other reclamation path.\n\nca8210_spi_transfer() is called from ca8210_spi_exchange(), the\ninterrupt handler ca8210_interrupt_handler(), and from the retry path\ninside the completion callback itself.  The exchange and interrupt\nhandler paths loop on -EBUSY, so under sustained SPI bus contention\nevery retry iteration leaks a fresh cas_ctl (~600 bytes per\noccurrence).\n\nFix it by freeing cas_ctl on the spi_async() error path.  While here,\ncorrect the misleading error string: the function calls spi_async(),\nnot spi_sync()."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:07:14.096Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/460c5cd51e4d7d15b317f178f42cfcb666c0fe91"},{"url":"https://git.kernel.org/stable/c/b07aea90dbc6e188c74c100af64b77b9482ffc65"},{"url":"https://git.kernel.org/stable/c/fe90605b651573d30be8293ff5be40e3d7023117"},{"url":"https://git.kernel.org/stable/c/b9071dc7889bef42590e04fbf3e56cc65e1e5e6e"},{"url":"https://git.kernel.org/stable/c/d4a397fe803c2d157f6ebb068b802ef75fbf109e"},{"url":"https://git.kernel.org/stable/c/cb5cca1d2a908ddd5e357971de0f2009617b8d6a"},{"url":"https://git.kernel.org/stable/c/7e3630fbb6aabb844bbf35746dee0bf3894100c7"},{"url":"https://git.kernel.org/stable/c/e09390e439bd7cca30dd10893b1f64802961667a"}],"title":"ieee802154: ca8210: fix cas_ctl leak on spi_async failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72048","datePublished":"2026-08-15T05:52:06.253Z","dateReserved":"2026-08-09T03:40:39.902Z","dateUpdated":"2026-08-17T05:07:14.096Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:14","lastModifiedDate":"2026-08-17 06:18:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72048","Ordinal":"1","Title":"ieee802154: ca8210: fix cas_ctl leak on spi_async failure","CVE":"CVE-2026-72048","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72048","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: ca8210: fix cas_ctl leak on spi_async failure\n\nca8210_spi_transfer() allocates cas_ctl with kzalloc_obj(GFP_ATOMIC)\nand relies entirely on the SPI completion callback\nca8210_spi_transfer_complete() to free it.\n\nThe spi_async() API only invokes the completion callback on successful\nsubmission.  On failure it returns a negative error code without ever\nqueuing the callback, which leaves cas_ctl and its embedded spi_message\nand spi_transfer orphaned.  Every kfree(cas_ctl) in the driver is\ninside the completion callback, so there is no other reclamation path.\n\nca8210_spi_transfer() is called from ca8210_spi_exchange(), the\ninterrupt handler ca8210_interrupt_handler(), and from the retry path\ninside the completion callback itself.  The exchange and interrupt\nhandler paths loop on -EBUSY, so under sustained SPI bus contention\nevery retry iteration leaks a fresh cas_ctl (~600 bytes per\noccurrence).\n\nFix it by freeing cas_ctl on the spi_async() error path.  While here,\ncorrect the misleading error string: the function calls spi_async(),\nnot spi_sync().","Type":"Description","Title":"ieee802154: ca8210: fix cas_ctl leak on spi_async failure"}]}}}