CVE-2026-74335

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74335", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.885Z", "datePublished": "2026-08-15T05:58:27.148Z", "dateUpdated": "2026-08-17T05:17:26.885Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:17:26.885Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix NULL pointer dereference in bpf_task_from_vpid()\n\nbpf_task_from_vpid() looks up a task in the pid namespace of the\ncurrent task, via find_task_by_vpid():\n\n find_task_by_vpid(vpid)\n find_task_by_pid_ns(vpid, task_active_pid_ns(current))\n find_pid_ns(nr, ns) -> idr_find(&ns->idr, nr)\n\ncgroup_skb programs run in softirq, which may interrupt a task that is\nitself in do_exit(). Once that task has passed\nexit_notify() -> release_task() -> __unhash_process(), its thread_pid is\ncleared, so task_active_pid_ns(current) returns NULL and find_pid_ns()\ndereferences &NULL->idr:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000050\n RIP: 0010:idr_find+0x11/0x30 lib/idr.c:176\n Call Trace:\n <IRQ>\n find_pid_ns kernel/pid.c:370 [inline]\n find_task_by_pid_ns+0x3b/0xe0 kernel/pid.c:485\n bpf_task_from_vpid+0x5b/0x200 kernel/bpf/helpers.c:2916\n bpf_prog_run_array_cg+0x17e/0x530 kernel/bpf/cgroup.c:81\n __cgroup_bpf_run_filter_skb+0x12b/0x250 kernel/bpf/cgroup.c:1612\n sk_filter_trim_cap+0x1dc/0x4c0 net/core/filter.c:148\n tcp_v4_rcv+0x18d1/0x2200 net/ipv4/tcp_ipv4.c:2223\n </IRQ>\n <TASK>\n do_exit+0xa63/0x1270 kernel/exit.c:1010\n get_signal+0x141c/0x1530 kernel/signal.c:3037\n\nBail out when current has no pid namespace."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/helpers.c"], "versions": [{"version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "lessThan": "b7474f4432dd9559ada03b01a8cd3472cd02c61d", "status": "affected", "versionType": "git"}, {"version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "lessThan": "a4c95b6221cb2972a94ed72663c09bd5b0b6dea4", "status": "affected", "versionType": "git"}, {"version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "lessThan": "50dff00615522f3ec03449680ca23beb4cfc549c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/helpers.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "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": "6.13", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b7474f4432dd9559ada03b01a8cd3472cd02c61d"}, {"url": "https://git.kernel.org/stable/c/a4c95b6221cb2972a94ed72663c09bd5b0b6dea4"}, {"url": "https://git.kernel.org/stable/c/50dff00615522f3ec03449680ca23beb4cfc549c"}], "title": "bpf: Fix NULL pointer dereference in bpf_task_from_vpid()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/helpers.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b7474f4432dd9559ada03b01a8cd3472cd02c61d", "status": "affected", "version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "versionType": "git"}, {"lessThan": "a4c95b6221cb2972a94ed72663c09bd5b0b6dea4", "status": "affected", "version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "versionType": "git"}, {"lessThan": "50dff00615522f3ec03449680ca23beb4cfc549c", "status": "affected", "version": "675c3596ff32c040d1dd2e28dd57e83e634b9f60", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/helpers.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"lessThan": "6.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "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\nbpf: Fix NULL pointer dereference in bpf_task_from_vpid()\n\nbpf_task_from_vpid() looks up a task in the pid namespace of the\ncurrent task, via find_task_by_vpid():\n\n find_task_by_vpid(vpid)\n find_task_by_pid_ns(vpid, task_active_pid_ns(current))\n find_pid_ns(nr, ns) -> idr_find(&ns->idr, nr)\n\ncgroup_skb programs run in softirq, which may interrupt a task that is\nitself in do_exit(). Once that task has passed\nexit_notify() -> release_task() -> __unhash_process(), its thread_pid is\ncleared, so task_active_pid_ns(current) returns NULL and find_pid_ns()\ndereferences &NULL->idr:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000050\n RIP: 0010:idr_find+0x11/0x30 lib/idr.c:176\n Call Trace:\n <IRQ>\n find_pid_ns kernel/pid.c:370 [inline]\n find_task_by_pid_ns+0x3b/0xe0 kernel/pid.c:485\n bpf_task_from_vpid+0x5b/0x200 kernel/bpf/helpers.c:2916\n bpf_prog_run_array_cg+0x17e/0x530 kernel/bpf/cgroup.c:81\n __cgroup_bpf_run_filter_skb+0x12b/0x250 kernel/bpf/cgroup.c:1612\n sk_filter_trim_cap+0x1dc/0x4c0 net/core/filter.c:148\n tcp_v4_rcv+0x18d1/0x2200 net/ipv4/tcp_ipv4.c:2223\n </IRQ>\n <TASK>\n do_exit+0xa63/0x1270 kernel/exit.c:1010\n get_signal+0x141c/0x1530 kernel/signal.c:3037\n\nBail out when current has no pid namespace."}], "id": "CVE-2026-74335", "lastModified": "2026-08-17T06:19:27.990", "metrics": {}, "published": "2026-08-15T06:22:34.393", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50dff00615522f3ec03449680ca23beb4cfc549c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a4c95b6221cb2972a94ed72663c09bd5b0b6dea4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b7474f4432dd9559ada03b01a8cd3472cd02c61d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: Fix NULL pointer dereference in bpf_task_from_vpid()", "id": "2516896", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516896"}, "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:\nbpf: Fix NULL pointer dereference in bpf_task_from_vpid()\nbpf_task_from_vpid() looks up a task in the pid namespace of the\ncurrent task, via find_task_by_vpid():\nfind_task_by_vpid(vpid)\nfind_task_by_pid_ns(vpid, task_active_pid_ns(current))\nfind_pid_ns(nr, ns) -> idr_find(&ns->idr, nr)\ncgroup_skb programs run in softirq, which may interrupt a task that is\nitself in do_exit(). Once that task has passed\nexit_notify() -> release_task() -> __unhash_process(), its thread_pid is\ncleared, so task_active_pid_ns(current) returns NULL and find_pid_ns()\ndereferences &NULL->idr:\nBUG: kernel NULL pointer dereference, address: 0000000000000050\nRIP: 0010:idr_find+0x11/0x30 lib/idr.c:176\nCall Trace:\n<IRQ>\nfind_pid_ns kernel/pid.c:370 [inline]\nfind_task_by_pid_ns+0x3b/0xe0 kernel/pid.c:485\nbpf_task_from_vpid+0x5b/0x200 kernel/bpf/helpers.c:2916\nbpf_prog_run_array_cg+0x17e/0x530 kernel/bpf/cgroup.c:81\n__cgroup_bpf_run_filter_skb+0x12b/0x250 kernel/bpf/cgroup.c:1612\nsk_filter_trim_cap+0x1dc/0x4c0 net/core/filter.c:148\ntcp_v4_rcv+0x18d1/0x2200 net/ipv4/tcp_ipv4.c:2223\n</IRQ>\n<TASK>\ndo_exit+0xa63/0x1270 kernel/exit.c:1010\nget_signal+0x141c/0x1530 kernel/signal.c:3037\nBail out when current has no pid namespace.", "A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. This vulnerability occurs in the `bpf_task_from_vpid()` function when a `cgroup_skb` program, running in a soft interrupt, attempts to look up a task that is in the process of exiting. If the task's process ID (PID) namespace is cleared during this operation, it can lead to a NULL pointer dereference, causing a system crash and resulting in a Denial of Service (DoS)."], "name": "CVE-2026-74335", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74335\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74335\nhttps://lore.kernel.org/linux-cve-announce/2026081556-CVE-2026-74335-c71b@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[675c3596ff32c040d1dd2e28dd57e83e634b9f60,b7474f4432dd9559ada03b01a8cd3472cd02c61d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[675c3596ff32c040d1dd2e28dd57e83e634b9f60,a4c95b6221cb2972a94ed72663c09bd5b0b6dea4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[675c3596ff32c040d1dd2e28dd57e83e634b9f60,50dff00615522f3ec03449680ca23beb4cfc549c)"}}], "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": "affected", "versions": {"scheme": "generic", "value": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-08-15T16:45:10.768503+00:00", "updated": "2026-08-22T01:00:13.550102+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}