CVE-2026-72048

{"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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()."}], "id": "CVE-2026-72048", "lastModified": "2026-08-17T06:18:02.860", "metrics": {}, "published": "2026-08-15T06:21:14.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/460c5cd51e4d7d15b317f178f42cfcb666c0fe91"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7e3630fbb6aabb844bbf35746dee0bf3894100c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b07aea90dbc6e188c74c100af64b77b9482ffc65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b9071dc7889bef42590e04fbf3e56cc65e1e5e6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb5cca1d2a908ddd5e357971de0f2009617b8d6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4a397fe803c2d157f6ebb068b802ef75fbf109e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e09390e439bd7cca30dd10893b1f64802961667a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe90605b651573d30be8293ff5be40e3d7023117"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ieee802154: ca8210: fix cas_ctl leak on spi_async failure", "id": "2516319", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516319"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel. The ieee802154: ca8210 driver fails to free allocated memory (cas_ctl) when the spi_async() operation encounters an error. Under sustained Serial Peripheral Interface (SPI) bus contention, this can lead to repeated memory leaks. This continuous resource exhaustion may result in a Denial of Service (DoS) for the system."], "name": "CVE-2026-72048", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72048\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72048\nhttps://lore.kernel.org/linux-cve-announce/2026081515-CVE-2026-72048-1527@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,460c5cd51e4d7d15b317f178f42cfcb666c0fe91)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,b07aea90dbc6e188c74c100af64b77b9482ffc65)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,b9071dc7889bef42590e04fbf3e56cc65e1e5e6e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,d4a397fe803c2d157f6ebb068b802ef75fbf109e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,cb5cca1d2a908ddd5e357971de0f2009617b8d6a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,7e3630fbb6aabb844bbf35746dee0bf3894100c7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,e09390e439bd7cca30dd10893b1f64802961667a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[ded845a781a578dfb0b5b2c138e5a067aa3b1242,fe90605b651573d30be8293ff5be40e3d7023117)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,6.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,6.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T10:00:06.356027+00:00", "updated": "2026-08-18T06:00:04.166971+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}