CVE-2026-97506

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97506", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.151Z", "datePublished": "2026-09-24T16:04:55.504Z", "dateUpdated": "2026-10-03T10:59:03.858Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:59:03.858Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ixp4xx - fix buffer chain unwind on allocation failure\n\nchainup_buffers() builds a linked list of buffer descriptors for a\nscatterlist. If dma_pool_alloc() fails while constructing the list, the\ncurrent code sets buf to NULL and later dereferences it unconditionally\nat the end of the function:\n\n buf->next = NULL;\n buf->phys_next = 0;\n\nThis can lead to a null-pointer dereference on allocation failure.\n\nIf the failure happens after part of the descriptor chain has already\nbeen allocated and DMA-mapped, the partially constructed chain also\nneeds to be released.\n\nFix this by terminating the partially constructed chain on allocation\nfailure and letting the callers unwind it via their existing cleanup\npaths. Also fix ablk_perform() to preserve the hook pointers before\nchecking for failure, so partially built chains can be freed correctly."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"], "versions": [{"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "d4007867be42d71795b78fa7f8ce7514dda9ca83", "status": "affected", "versionType": "git"}, {"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "4918b0bd7d2baafb45d87dca9e322137c96005c2", "status": "affected", "versionType": "git"}, {"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991", "status": "affected", "versionType": "git"}, {"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "04cb00106ca4d0fa9eca24cadc4eda6036e855c8", "status": "affected", "versionType": "git"}, {"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "028a7f4f3d69e551f6bf9f728d547bbf4cfc707d", "status": "affected", "versionType": "git"}, {"version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "lessThan": "25056329384010a8672552b134f609601dc4f80e", "status": "affected", "versionType": "git"}, {"version": "5a80273150a8a1725fa70418d106eb1f2ee8fd2f", "status": "affected", "versionType": "git"}, {"version": "82a8becb9c2c52fc5e67057a43aeded1f0731e7b", "status": "affected", "versionType": "git"}, {"version": "68845515c8b11791b547a2838e22c27dfa3115ee", "status": "affected", "versionType": "git"}, {"version": "2.6.27.22", "lessThan": "2.6.28", "status": "affected", "versionType": "semver"}, {"version": "2.6.28.10", "lessThan": "2.6.29", "status": "affected", "versionType": "semver"}, {"version": "2.6.29.3", "lessThan": "2.6.30", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "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": "2.6.30", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d4007867be42d71795b78fa7f8ce7514dda9ca83"}, {"url": "https://git.kernel.org/stable/c/4918b0bd7d2baafb45d87dca9e322137c96005c2"}, {"url": "https://git.kernel.org/stable/c/8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991"}, {"url": "https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8"}, {"url": "https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d"}, {"url": "https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e"}], "title": "crypto: ixp4xx - fix buffer chain unwind on allocation failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d4007867be42d71795b78fa7f8ce7514dda9ca83", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"lessThan": "4918b0bd7d2baafb45d87dca9e322137c96005c2", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"lessThan": "8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"lessThan": "04cb00106ca4d0fa9eca24cadc4eda6036e855c8", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"lessThan": "028a7f4f3d69e551f6bf9f728d547bbf4cfc707d", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"lessThan": "25056329384010a8672552b134f609601dc4f80e", "status": "affected", "version": "0d44dc59b2b434b29aafeae581d06f81efac7c83", "versionType": "git"}, {"status": "affected", "version": "5a80273150a8a1725fa70418d106eb1f2ee8fd2f", "versionType": "git"}, {"status": "affected", "version": "82a8becb9c2c52fc5e67057a43aeded1f0731e7b", "versionType": "git"}, {"status": "affected", "version": "68845515c8b11791b547a2838e22c27dfa3115ee", "versionType": "git"}, {"lessThan": "2.6.28", "status": "affected", "version": "2.6.27.22", "versionType": "semver"}, {"lessThan": "2.6.29", "status": "affected", "version": "2.6.28.10", "versionType": "semver"}, {"lessThan": "2.6.30", "status": "affected", "version": "2.6.29.3", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"lessThan": "2.6.30", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "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\ncrypto: ixp4xx - fix buffer chain unwind on allocation failure\n\nchainup_buffers() builds a linked list of buffer descriptors for a\nscatterlist. If dma_pool_alloc() fails while constructing the list, the\ncurrent code sets buf to NULL and later dereferences it unconditionally\nat the end of the function:\n\n buf->next = NULL;\n buf->phys_next = 0;\n\nThis can lead to a null-pointer dereference on allocation failure.\n\nIf the failure happens after part of the descriptor chain has already\nbeen allocated and DMA-mapped, the partially constructed chain also\nneeds to be released.\n\nFix this by terminating the partially constructed chain on allocation\nfailure and letting the callers unwind it via their existing cleanup\npaths. Also fix ablk_perform() to preserve the hook pointers before\nchecking for failure, so partially built chains can be freed correctly."}], "id": "CVE-2026-97506", "lastModified": "2026-10-03T11:17:59.963", "metrics": {}, "published": "2026-09-24T17:17:28.423", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4918b0bd7d2baafb45d87dca9e322137c96005c2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4007867be42d71795b78fa7f8ce7514dda9ca83"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: crypto: ixp4xx - fix buffer chain unwind on allocation failure", "id": "2540527", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540527"}, "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-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncrypto: ixp4xx - fix buffer chain unwind on allocation failure\nchainup_buffers() builds a linked list of buffer descriptors for a\nscatterlist. If dma_pool_alloc() fails while constructing the list, the\ncurrent code sets buf to NULL and later dereferences it unconditionally\nat the end of the function:\nbuf->next = NULL;\nbuf->phys_next = 0;\nThis can lead to a null-pointer dereference on allocation failure.\nIf the failure happens after part of the descriptor chain has already\nbeen allocated and DMA-mapped, the partially constructed chain also\nneeds to be released.\nFix this by terminating the partially constructed chain on allocation\nfailure and letting the callers unwind it via their existing cleanup\npaths. Also fix ablk_perform() to preserve the hook pointers before\nchecking for failure, so partially built chains can be freed correctly.", "A flaw was found in the Linux kernel's Intel IXP4xx crypto driver. When memory allocation fails while constructing buffer descriptor chains for cryptographic operations, the driver attempts to access an invalid null pointer. A local user could exploit this flaw under low-memory conditions to trigger a kernel crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-97506", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97506\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97506\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97506.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,04cb00106ca4d0fa9eca24cadc4eda6036e855c8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,028a7f4f3d69e551f6bf9f728d547bbf4cfc707d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,25056329384010a8672552b134f609601dc4f80e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-09-25T01:15:20.466258+00:00", "updated": "2026-10-01T10:30:08.281848+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}