{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23064",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.953Z",
        "datePublished": "2026-02-04T16:07:46.329Z",
        "dateUpdated": "2026-05-11T21:59:18.219Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:59:18.219Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ife: avoid possible NULL deref\n\ntcf_ife_encode() must make sure ife_encode() does not return NULL.\n\nsyzbot reported:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:ife_tlv_meta_encode+0x41/0xa0 net/ife/ife.c:166\nCPU: 3 UID: 0 PID: 8990 Comm: syz.0.696 Not tainted syzkaller #0 PREEMPT(full)\nCall Trace:\n <TASK>\n  ife_encode_meta_u32+0x153/0x180 net/sched/act_ife.c:101\n  tcf_ife_encode net/sched/act_ife.c:841 [inline]\n  tcf_ife_act+0x1022/0x1de0 net/sched/act_ife.c:877\n  tc_act include/net/tc_wrapper.h:130 [inline]\n  tcf_action_exec+0x1c0/0xa20 net/sched/act_api.c:1152\n  tcf_exts_exec include/net/pkt_cls.h:349 [inline]\n  mall_classify+0x1a0/0x2a0 net/sched/cls_matchall.c:42\n  tc_classify include/net/tc_wrapper.h:197 [inline]\n  __tcf_classify net/sched/cls_api.c:1764 [inline]\n  tcf_classify+0x7f2/0x1380 net/sched/cls_api.c:1860\n  multiq_classify net/sched/sch_multiq.c:39 [inline]\n  multiq_enqueue+0xe0/0x510 net/sched/sch_multiq.c:66\n  dev_qdisc_enqueue+0x45/0x250 net/core/dev.c:4147\n  __dev_xmit_skb net/core/dev.c:4262 [inline]\n  __dev_queue_xmit+0x2998/0x46c0 net/core/dev.c:4798"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/act_ife.c"
                    ],
                    "versions": [
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "4ef2c77851676b7ed106f0c47755bee9eeec9a40",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "dd9442aedbeae87c44cc64c0ee41abd296dc008b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "1440d749fe49c8665da6f744323b1671d25a56a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "03710cebfc0bcfe247a9e04381e79ea33896e278",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "374915dfc932adf57712df3be010667fd1190e3c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "6c75fed55080014545f262b7055081cec4768b20",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "295a6e06d21e1f469c9f38b00125a13b60ad4e7c",
                            "lessThan": "27880b0b0d35ad1c98863d09788254e36f874968",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/act_ife.c"
                    ],
                    "versions": [
                        {
                            "version": "4.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.249",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.199",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.162",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.122",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.68",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.8",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "5.10.249"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "5.15.199"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.1.162"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.6.122"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.12.68"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.18.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4ef2c77851676b7ed106f0c47755bee9eeec9a40"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dd9442aedbeae87c44cc64c0ee41abd296dc008b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1440d749fe49c8665da6f744323b1671d25a56a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03710cebfc0bcfe247a9e04381e79ea33896e278"
                },
                {
                    "url": "https://git.kernel.org/stable/c/374915dfc932adf57712df3be010667fd1190e3c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6c75fed55080014545f262b7055081cec4768b20"
                },
                {
                    "url": "https://git.kernel.org/stable/c/27880b0b0d35ad1c98863d09788254e36f874968"
                }
            ],
            "title": "net/sched: act_ife: avoid possible NULL deref",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}