{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72048","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-09T03:40:39.902Z","datePublished":"2026-08-15T05:52:06.253Z","dateUpdated":"2026-08-17T05:07:14.096Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:07:14.096Z"},"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()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ieee802154/ca8210.c"],"versions":[{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"460c5cd51e4d7d15b317f178f42cfcb666c0fe91","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"b07aea90dbc6e188c74c100af64b77b9482ffc65","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"fe90605b651573d30be8293ff5be40e3d7023117","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"b9071dc7889bef42590e04fbf3e56cc65e1e5e6e","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"d4a397fe803c2d157f6ebb068b802ef75fbf109e","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"cb5cca1d2a908ddd5e357971de0f2009617b8d6a","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"7e3630fbb6aabb844bbf35746dee0bf3894100c7","status":"affected","versionType":"git"},{"version":"ded845a781a578dfb0b5b2c138e5a067aa3b1242","lessThan":"e09390e439bd7cca30dd10893b1f64802961667a","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/net/ieee802154/ca8210.c"],"versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"4.12","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.2"}]}]}],"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"}}}}