{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45959", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.089Z", "datePublished": "2026-05-27T12:18:16.039Z", "dateUpdated": "2026-05-27T12:18:16.039Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:18:16.039Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with the `__cleanup(kfree)` attribute will\nmake the address of the local variable, rather than the address returned\nby kmalloc, passed to kfree directly and lead to a crash due to invalid\ndeallocation of stack address. According to other places in the repo,\nthe correct usage should be `__free(kfree)`. The code coincidentally\ncompiled because the parameter type `void *` of kfree is compatible with\nthe desired type `struct { ... } **`."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/ccp/ccp-ops.c"], "versions": [{"version": "a71475582ada92ba021852bf3c2b40ab3718549b", "lessThan": "9a3ace9b010ffd8c422c97844ae152f7c53d6b18", "status": "affected", "versionType": "git"}, {"version": "a71475582ada92ba021852bf3c2b40ab3718549b", "lessThan": "90f9090e3e744a8fe3bb6fa0e61f577347728b0b", "status": "affected", "versionType": "git"}, {"version": "a71475582ada92ba021852bf3c2b40ab3718549b", "lessThan": "d5abcc33ee76bc26d58b39dc1a097e43a99dd438", "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/crypto/ccp/ccp-ops.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.17", "versionEndExcluding": "6.18.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18"}, {"url": "https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b"}, {"url": "https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438"}], "title": "crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with the `__cleanup(kfree)` attribute will\nmake the address of the local variable, rather than the address returned\nby kmalloc, passed to kfree directly and lead to a crash due to invalid\ndeallocation of stack address. According to other places in the repo,\nthe correct usage should be `__free(kfree)`. The code coincidentally\ncompiled because the parameter type `void *` of kfree is compatible with\nthe desired type `struct { ... } **`."}], "id": "CVE-2026-45959", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:12.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree", "id": "2481948", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481948"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-763", "details": ["A flaw was found in the Linux kernel's crypto: ccp module. An incorrect cleanup usage of the `kfree` function, which is used for memory deallocation, with a local pointer variable could lead to an invalid deallocation of a stack address. This issue can result in a system crash, causing a Denial of Service (DoS)."], "name": "CVE-2026-45959", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45959\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45959\nhttps://lore.kernel.org/linux-cve-announce/2026052733-CVE-2026-45959-5456@gregkh/T"], "threat_severity": "Moderate"}