{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53599",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-04T15:40:38.479Z",
        "datePublished": "2025-10-04T15:44:11.096Z",
        "dateUpdated": "2026-05-11T19:48:16.675Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:48:16.675Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: af_alg - Fix missing initialisation affecting gcm-aes-s390\n\nFix af_alg_alloc_areq() to initialise areq->first_rsgl.sgl.sgt.sgl to point\nto the scatterlist array in areq->first_rsgl.sgl.sgl.\n\nWithout this, the gcm-aes-s390 driver will oops when it tries to do\ngcm_walk_start() on req->dst because req->dst is set to the value of\nareq->first_rsgl.sgl.sgl by _aead_recvmsg() calling\naead_request_set_crypt().\n\nThe problem comes if an empty ciphertext is passed: the loop in\naf_alg_get_rsgl() just passes straight out and doesn't set areq->first_rsgl\nup.\n\nThis isn't a problem on x86_64 using gcmaes_crypt_by_sg() because, as far\nas I can tell, that ignores req->dst and only uses req->src[*].\n\n[*] Is this a bug in aesni-intel_glue.c?\n\nThe s390x oops looks something like:\n\n Unable to handle kernel pointer dereference in virtual kernel address space\n Failing address: 0000000a00000000 TEID: 0000000a00000803\n Fault in home space mode while using kernel ASCE.\n AS:00000000a43a0007 R3:0000000000000024\n Oops: 003b ilc:2 [#1] SMP\n ...\n Call Trace:\n  [<000003ff7fc3d47e>] gcm_walk_start+0x16/0x28 [aes_s390]\n  [<00000000a2a342f2>] crypto_aead_decrypt+0x9a/0xb8\n  [<00000000a2a60888>] aead_recvmsg+0x478/0x698\n  [<00000000a2e519a0>] sock_recvmsg+0x70/0xb0\n  [<00000000a2e51a56>] sock_read_iter+0x76/0xa0\n  [<00000000a273e066>] vfs_read+0x26e/0x2a8\n  [<00000000a273e8c4>] ksys_read+0xbc/0x100\n  [<00000000a311d808>] __do_syscall+0x1d0/0x1f8\n  [<00000000a312ff30>] system_call+0x70/0x98\n Last Breaking-Event-Address:\n  [<000003ff7fc3e6b4>] gcm_aes_crypt+0x104/0xa68 [aes_s390]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/af_alg.c"
                    ],
                    "versions": [
                        {
                            "version": "c1abe6f570aff4b6d396dc551e60570d2f50bd79",
                            "lessThan": "2c9d205040d7c0eaccc473917f9b0bb0a923e440",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c1abe6f570aff4b6d396dc551e60570d2f50bd79",
                            "lessThan": "6a4b8aa0a916b39a39175584c07222434fa6c6ef",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/af_alg.c"
                    ],
                    "versions": [
                        {
                            "version": "6.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.3",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6",
                            "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": "6.5",
                                    "versionEndExcluding": "6.5.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.6"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2c9d205040d7c0eaccc473917f9b0bb0a923e440"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6a4b8aa0a916b39a39175584c07222434fa6c6ef"
                }
            ],
            "title": "crypto: af_alg - Fix missing initialisation affecting gcm-aes-s390",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}