CVE-2024-56681

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-56681", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.846Z", "datePublished": "2024-12-28T09:46:09.675Z", "dateUpdated": "2026-10-15T21:51:48.722Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:46:02.716Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: bcm - add error check in the ahash_hmac_init function\n\nThe ahash_init functions may return fails. The ahash_hmac_init should\nnot return ok when ahash_init returns error. For an example, ahash_init\nwill return -ENOMEM when allocation memory is error."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The reliable trigger is a local unprivileged process driving the driver's ahash through AF_ALG (algif_hash) socket syscalls; in-kernel remote consumers of crypto_ahash_init() on hmac algorithms (tcp_ao, gss_krb5) would additionally require an allocation failure the remote peer cannot control.\nAC:L - The attacker sets a zero-length HMAC key via ALG_SET_KEY, which makes ahash_init() skip setkey and hit the deterministic -ENOKEY error path that frees ctx->shash without clearing it \u2014 no race, no memory pressure, and the freed object can be groomed between syscalls before the update() use.\nPR:L - Any unprivileged local user can open an AF_ALG hash socket and bind to the driver's algorithm/driver name (hmac-sha1-iproc); no capability check exists on this path.\nUI:N - The attacker performs the entire socket/setkey/sendmsg sequence itself; no victim action is involved.\nS:U - The corruption is confined to kernel heap memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The stale ctx->shash is dereferenced as a shash_desc, so an attacker who reclaims the freed slab object controls the tfm pointer and the resulting digest data returned to userspace, giving a use-after-free read primitive over kernel memory.\nI:H - crypto_shash_update()/final() perform an indirect call through a function-pointer table reached from the freed object, and ahash_final() then does crypto_free_shash(ctx->shash->tfm) plus kfree(ctx->shash) \u2014 a double free and a free of an attacker-supplied pointer, which is a control-flow-hijack/arbitrary-write primitive.\nA:H - In the -ENOMEM case ctx->shash is NULL and the subsequent crypto_shash_update()/final() dereference NULL, and in the -ENOKEY case the use-after-free and double free reliably oops or panic the kernel."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/bcm/cipher.c"], "versions": [{"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "8f1a9a960b1107bd0e0ec3736055f5ed0e717edf", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "75e1e38e5d80d6d9011b7322698ffba3dd3db30a", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "28f8ffa945f7d7150463e15097ea73b19529d6f5", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "4ea3e3b761e371102bb1486778e2f8dbc9e37413", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "ae5253313e0ea5f00c06176074592b7f493c8546", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "ee36db8e8203420e6d5c42eb9428920c2fc36532", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "bba9e38c5ad41d0a88b22a59e5b6dd3e31825118", "status": "affected", "versionType": "git"}, {"version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "19630cf57233e845b6ac57c9c969a4888925467b", "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/bcm/cipher.c"], "versions": [{"version": "4.11", "status": "affected"}, {"version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.325", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.287", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.231", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.174", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.64", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "4.11", "versionEndExcluding": "4.19.325"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.4.287"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.10.231"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.15.174"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.6.64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.11.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8f1a9a960b1107bd0e0ec3736055f5ed0e717edf"}, {"url": "https://git.kernel.org/stable/c/75e1e38e5d80d6d9011b7322698ffba3dd3db30a"}, {"url": "https://git.kernel.org/stable/c/28f8ffa945f7d7150463e15097ea73b19529d6f5"}, {"url": "https://git.kernel.org/stable/c/4ea3e3b761e371102bb1486778e2f8dbc9e37413"}, {"url": "https://git.kernel.org/stable/c/05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc"}, {"url": "https://git.kernel.org/stable/c/ae5253313e0ea5f00c06176074592b7f493c8546"}, {"url": "https://git.kernel.org/stable/c/ee36db8e8203420e6d5c42eb9428920c2fc36532"}, {"url": "https://git.kernel.org/stable/c/bba9e38c5ad41d0a88b22a59e5b6dd3e31825118"}, {"url": "https://git.kernel.org/stable/c/19630cf57233e845b6ac57c9c969a4888925467b"}], "title": "crypto: bcm - add error check in the ahash_hmac_init function", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:52:28.536Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-56681", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:41:19.814800Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:51:48.722Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:52:28.536Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-56681", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:41:19.814800Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:20.611Z"}}], "cna": {"title": "crypto: bcm - add error check in the ahash_hmac_init function", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The reliable trigger is a local unprivileged process driving the driver's ahash through AF_ALG (algif_hash) socket syscalls; in-kernel remote consumers of crypto_ahash_init() on hmac algorithms (tcp_ao, gss_krb5) would additionally require an allocation failure the remote peer cannot control.\nAC:L - The attacker sets a zero-length HMAC key via ALG_SET_KEY, which makes ahash_init() skip setkey and hit the deterministic -ENOKEY error path that frees ctx->shash without clearing it \u2014 no race, no memory pressure, and the freed object can be groomed between syscalls before the update() use.\nPR:L - Any unprivileged local user can open an AF_ALG hash socket and bind to the driver's algorithm/driver name (hmac-sha1-iproc); no capability check exists on this path.\nUI:N - The attacker performs the entire socket/setkey/sendmsg sequence itself; no victim action is involved.\nS:U - The corruption is confined to kernel heap memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The stale ctx->shash is dereferenced as a shash_desc, so an attacker who reclaims the freed slab object controls the tfm pointer and the resulting digest data returned to userspace, giving a use-after-free read primitive over kernel memory.\nI:H - crypto_shash_update()/final() perform an indirect call through a function-pointer table reached from the freed object, and ahash_final() then does crypto_free_shash(ctx->shash->tfm) plus kfree(ctx->shash) \u2014 a double free and a free of an attacker-supplied pointer, which is a control-flow-hijack/arbitrary-write primitive.\nA:H - In the -ENOMEM case ctx->shash is NULL and the subsequent crypto_shash_update()/final() dereference NULL, and in the -ENOKEY case the use-after-free and double free reliably oops or panic the kernel."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "8f1a9a960b1107bd0e0ec3736055f5ed0e717edf", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "75e1e38e5d80d6d9011b7322698ffba3dd3db30a", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "28f8ffa945f7d7150463e15097ea73b19529d6f5", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "4ea3e3b761e371102bb1486778e2f8dbc9e37413", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "ae5253313e0ea5f00c06176074592b7f493c8546", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "ee36db8e8203420e6d5c42eb9428920c2fc36532", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "bba9e38c5ad41d0a88b22a59e5b6dd3e31825118", "versionType": "git"}, {"status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "lessThan": "19630cf57233e845b6ac57c9c969a4888925467b", "versionType": "git"}], "programFiles": ["drivers/crypto/bcm/cipher.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"status": "unaffected", "version": "0", "lessThan": "4.11", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.325", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.287", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.231", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.174", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.120", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.64", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.11.11", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12.2", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/crypto/bcm/cipher.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/8f1a9a960b1107bd0e0ec3736055f5ed0e717edf"}, {"url": "https://git.kernel.org/stable/c/75e1e38e5d80d6d9011b7322698ffba3dd3db30a"}, {"url": "https://git.kernel.org/stable/c/28f8ffa945f7d7150463e15097ea73b19529d6f5"}, {"url": "https://git.kernel.org/stable/c/4ea3e3b761e371102bb1486778e2f8dbc9e37413"}, {"url": "https://git.kernel.org/stable/c/05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc"}, {"url": "https://git.kernel.org/stable/c/ae5253313e0ea5f00c06176074592b7f493c8546"}, {"url": "https://git.kernel.org/stable/c/ee36db8e8203420e6d5c42eb9428920c2fc36532"}, {"url": "https://git.kernel.org/stable/c/bba9e38c5ad41d0a88b22a59e5b6dd3e31825118"}, {"url": "https://git.kernel.org/stable/c/19630cf57233e845b6ac57c9c969a4888925467b"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: bcm - add error check in the ahash_hmac_init function\n\nThe ahash_init functions may return fails. The ahash_hmac_init should\nnot return ok when ahash_init returns error. For an example, ahash_init\nwill return -ENOMEM when allocation memory is error."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.325", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.287", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.231", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.174", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.120", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.64", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.11", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.2", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13", "versionStartIncluding": "4.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:46:02.716Z"}}}, "cveMetadata": {"cveId": "CVE-2024-56681", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:51:48.722Z", "dateReserved": "2024-12-27T15:00:39.846Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-12-28T09:46:09.675Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/bcm/cipher.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8f1a9a960b1107bd0e0ec3736055f5ed0e717edf", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "75e1e38e5d80d6d9011b7322698ffba3dd3db30a", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "28f8ffa945f7d7150463e15097ea73b19529d6f5", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "4ea3e3b761e371102bb1486778e2f8dbc9e37413", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "ae5253313e0ea5f00c06176074592b7f493c8546", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "ee36db8e8203420e6d5c42eb9428920c2fc36532", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "bba9e38c5ad41d0a88b22a59e5b6dd3e31825118", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}, {"lessThan": "19630cf57233e845b6ac57c9c969a4888925467b", "status": "affected", "version": "9d12ba86f818aa9cfe9f01b750336aa441f2ffa2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/bcm/cipher.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"lessThan": "4.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.325", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.287", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.231", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.174", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.120", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.64", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.11", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2E896CE0-6F5D-4FEF-B4C4-47311F4B507D", "versionEndExcluding": "4.19.325", "versionStartIncluding": "4.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E4B15788-D35E-4E5B-A9C0-070AE3729B34", "versionEndExcluding": "5.4.287", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935", "versionEndExcluding": "5.10.231", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89", "versionEndExcluding": "5.15.174", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265", "versionEndExcluding": "6.1.120", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CA16DEE3-ABEC-4449-9F4A-7A3DC4FC36C7", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "21434379-192D-472F-9B54-D45E3650E893", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: bcm - add error check in the ahash_hmac_init function\n\nThe ahash_init functions may return fails. The ahash_hmac_init should\nnot return ok when ahash_init returns error. For an example, ahash_init\nwill return -ENOMEM when allocation memory is error."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: crypto: bcm - a\u00f1adir comprobaci\u00f3n de errores en la funci\u00f3n ahash_hmac_init Las funciones ahash_init pueden devolver errores. La funci\u00f3n ahash_hmac_init no deber\u00eda devolver ok cuando ahash_init devuelve un error. Por ejemplo, ahash_init devolver\u00e1 -ENOMEM cuando la memoria de asignaci\u00f3n sea err\u00f3nea."}], "id": "CVE-2024-56681", "lastModified": "2026-10-15T22:18:02.660", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-56681", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:41:19.814800Z", "version": "2.0.3"}}]}, "published": "2024-12-28T10:15:09.967", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19630cf57233e845b6ac57c9c969a4888925467b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28f8ffa945f7d7150463e15097ea73b19529d6f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4ea3e3b761e371102bb1486778e2f8dbc9e37413"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75e1e38e5d80d6d9011b7322698ffba3dd3db30a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8f1a9a960b1107bd0e0ec3736055f5ed0e717edf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ae5253313e0ea5f00c06176074592b7f493c8546"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bba9e38c5ad41d0a88b22a59e5b6dd3e31825118"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ee36db8e8203420e6d5c42eb9428920c2fc36532"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: crypto: bcm - add error check in the ahash_hmac_init function", "id": "2334665", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334665"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-253", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncrypto: bcm - add error check in the ahash_hmac_init function\nThe ahash_init functions may return fails. The ahash_hmac_init should\nnot return ok when ahash_init returns error. For an example, ahash_init\nwill return -ENOMEM when allocation memory is error."], "name": "CVE-2024-56681", "package_state": [{"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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56681\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56681\nhttps://lore.kernel.org/linux-cve-announce/2024122832-CVE-2024-56681-d0c0@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-13T11:22:52.990008+00:00", "updated": "2025-07-13T11:22:52.990063+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}