CVE-2026-64468

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64468", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.790Z", "datePublished": "2026-07-25T08:51:33.364Z", "dateUpdated": "2026-08-17T04:56:13.826Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:56:13.826Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix UAF in binder_free_transaction()\n\nIn binder_free_transaction(), the t->to_proc is read under the t->lock.\nHowever, once the t->lock is dropped, the to_proc can die in parallel.\nThis leads to a use-after-free error when we attempt to acquire its\ninner lock right afterwards:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x1a0\n Write of size 4 at addr ffff00001125da70 by task B/672\n\n CPU: 20 UID: 0 PID: 672 Comm: B Not tainted 7.1.0-rc6-00284-g8e65320d91cd #4 PREEMPT\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n _raw_spin_lock+0xe4/0x1a0\n binder_free_transaction+0x8c/0x320\n binder_send_failed_reply+0x21c/0x2f8\n binder_thread_release+0x488/0x7e0\n binder_ioctl+0x12c0/0x29a0\n [...]\n\n Allocated by task 675:\n __kmalloc_cache_noprof+0x174/0x444\n binder_open+0x118/0xb70\n do_dentry_open+0x374/0x1040\n vfs_open+0x58/0x3bc\n [...]\n\n Freed by task 212:\n __kasan_slab_free+0x58/0x80\n kfree+0x1a0/0x4a4\n binder_proc_dec_tmpref+0x32c/0x5e0\n binder_deferred_func+0xc48/0x104c\n process_one_work+0x53c/0xbc0\n [...]\n ==================================================================\n\nTo prevent this, pin the target thread (t->to_thread) to guarantee the\ntarget process remains alive. Undelivered transactions without a target\nthread are already safe, as the target process can only be the current\ncontext in those paths."}], "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 vulnerability is reached through Binder device ioctls, including BINDER_WRITE_READ and BINDER_THREAD_EXIT, so the attacker requires local execution.\nAC:L - Attacker-controlled processes can construct the transaction stack and concurrently trigger both thread and target-process teardown, allowing repeated race attempts and heap spraying.\nPR:L - A basic unprivileged user can access an available Binder device or mount a private BinderFS instance through a user namespace; no capability in the initial user namespace is required.\nUI:N - All required transactions, thread exits, and process teardown can be performed by attacker-controlled processes without victim action.\nS:U - Exploitation affects the host kernel within its existing security authority, making this a standard local kernel privilege escalation with unchanged scope.\nC:H - The freed binder_proc can be reclaimed with attacker-influenced data, and subsequent stale-pointer dereferences can provide kernel-memory access and disclosure primitives.\nI:H - The UAF performs spinlock and counter writes into freed slab memory and may operate on a reclaimed waitqueue, enabling heap corruption and potential arbitrary kernel code execution.\nA:H - The demonstrated invalid spinlock write causes a KASAN UAF, and exploitation can otherwise produce a kernel crash, panic, or hang."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/android/binder.c"], "versions": [{"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "5602a43f251c3d75312df91a422675fc00ca3dce", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "0be901ab1dcc4af59b88f2e324493bb283850167", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "48aeda9f8039e4a6971d1804578efde7f2c01eda", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "45df558c543bb5543bacc8065fd7c567740781e5", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "d45ef513eed1abebfec90c3cfb6ae50c2a4182db", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "328ccf32acb87e8bbb1fe2b065068c574e4db2bf", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "0f15f0f6ca5df566275ce517f257af2559528b41", "status": "affected", "versionType": "git"}, {"version": "a370003cc301d4361bae20c9ef615f89bf8d1e8a", "lessThan": "f223d27a546c1e1f48d38fd67760e78f068fe8c4", "status": "affected", "versionType": "git"}, {"version": "a4a3c070b8760f71c8311399fa9bfe67c8629bca", "status": "affected", "versionType": "git"}, {"version": "22068d49d09d2b3890e19d7b2048a33340f992da", "status": "affected", "versionType": "git"}, {"version": "0e3b977a8f1be01dcfa0baae68851b1f55f2a0a9", "status": "affected", "versionType": "git"}, {"version": "4.14.136", "lessThan": "4.15", "status": "affected", "versionType": "semver"}, {"version": "4.19.64", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.1.15", "lessThan": "5.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/android/binder.c"], "versions": [{"version": "5.2", "status": "affected"}, {"version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, 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"https://git.kernel.org/stable/c/d45ef513eed1abebfec90c3cfb6ae50c2a4182db"}, {"url": "https://git.kernel.org/stable/c/328ccf32acb87e8bbb1fe2b065068c574e4db2bf"}, {"url": "https://git.kernel.org/stable/c/0f15f0f6ca5df566275ce517f257af2559528b41"}, {"url": "https://git.kernel.org/stable/c/f223d27a546c1e1f48d38fd67760e78f068fe8c4"}], "title": "binder: fix UAF in binder_free_transaction()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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"status": "affected", "version": "5.1.15", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/android/binder.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.2"}, {"lessThan": "5.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.96", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "91C47692-2547-4333-AD65-E82526CB2B77", "versionEndExcluding": "4.15", "versionStartIncluding": "4.14.136", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C27472C2-E584-440A-8119-3A96F573B75A", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BE279492-FEE9-4AF0-AC17-1E682545ADEB", "versionEndExcluding": "5.2", "versionStartIncluding": "5.1.15", "vulnerable": true}, {"criteria": 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"6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.2:-:*:*:*:*:*:*", "matchCriteriaId": "76B232EC-BD47-422E-A130-E167DCA55D88", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.2:rc6:*:*:*:*:*:*", "matchCriteriaId": "4C3DC01D-8A16-42EB-8B3D-D170507ABDF2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.2:rc7:*:*:*:*:*:*", "matchCriteriaId": "5D0F8E59-A7FA-4BD7-89C3-4C4DCF11D8C5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*", "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*", "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix UAF in binder_free_transaction()\n\nIn binder_free_transaction(), the t->to_proc is read under the t->lock.\nHowever, once the t->lock is dropped, the to_proc can die in parallel.\nThis leads to a use-after-free error when we attempt to acquire its\ninner lock right afterwards:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x1a0\n Write of size 4 at addr ffff00001125da70 by task B/672\n\n CPU: 20 UID: 0 PID: 672 Comm: B Not tainted 7.1.0-rc6-00284-g8e65320d91cd #4 PREEMPT\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n _raw_spin_lock+0xe4/0x1a0\n binder_free_transaction+0x8c/0x320\n binder_send_failed_reply+0x21c/0x2f8\n binder_thread_release+0x488/0x7e0\n binder_ioctl+0x12c0/0x29a0\n [...]\n\n Allocated by task 675:\n __kmalloc_cache_noprof+0x174/0x444\n binder_open+0x118/0xb70\n do_dentry_open+0x374/0x1040\n vfs_open+0x58/0x3bc\n [...]\n\n Freed by task 212:\n __kasan_slab_free+0x58/0x80\n kfree+0x1a0/0x4a4\n binder_proc_dec_tmpref+0x32c/0x5e0\n binder_deferred_func+0xc48/0x104c\n process_one_work+0x53c/0xbc0\n [...]\n ==================================================================\n\nTo prevent this, pin the target thread (t->to_thread) to guarantee the\ntarget process remains alive. Undelivered transactions without a target\nthread are already safe, as the target process can only be the current\ncontext in those paths."}], "id": "CVE-2026-64468", "lastModified": "2026-11-12T18:02:32.117", "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"}]}, "published": "2026-07-25T10:17:32.103", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0be901ab1dcc4af59b88f2e324493bb283850167"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0f15f0f6ca5df566275ce517f257af2559528b41"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/328ccf32acb87e8bbb1fe2b065068c574e4db2bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/45df558c543bb5543bacc8065fd7c567740781e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/48aeda9f8039e4a6971d1804578efde7f2c01eda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5602a43f251c3d75312df91a422675fc00ca3dce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d45ef513eed1abebfec90c3cfb6ae50c2a4182db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f223d27a546c1e1f48d38fd67760e78f068fe8c4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: binder: fix UAF in binder_free_transaction()", "id": "2507088", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507088"}, "csaw": false, "cwe": "CWE-366", "details": ["A flaw was found in the Linux kernel's binder component. A use-after-free (UAF) vulnerability exists in the `binder_free_transaction()` function, where a process's reference is accessed after the lock protecting it is released, allowing the process to terminate prematurely. A local attacker with low privileges could exploit this to cause a system crash (denial of service) or potentially gain elevated privileges."], "name": "CVE-2026-64468", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "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": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64468\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64468\nhttps://lore.kernel.org/linux-cve-announce/2026072545-CVE-2026-64468-1ee6@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,5602a43f251c3d75312df91a422675fc00ca3dce)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,0be901ab1dcc4af59b88f2e324493bb283850167)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,48aeda9f8039e4a6971d1804578efde7f2c01eda)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,45df558c543bb5543bacc8065fd7c567740781e5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,d45ef513eed1abebfec90c3cfb6ae50c2a4182db)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,328ccf32acb87e8bbb1fe2b065068c574e4db2bf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,0f15f0f6ca5df566275ce517f257af2559528b41)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a370003cc301d4361bae20c9ef615f89bf8d1e8a,f223d27a546c1e1f48d38fd67760e78f068fe8c4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a4a3c070b8760f71c8311399fa9bfe67c8629bca,a4a3c070b8760f71c8311399fa9bfe67c8629bca]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[22068d49d09d2b3890e19d7b2048a33340f992da,22068d49d09d2b3890e19d7b2048a33340f992da]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0e3b977a8f1be01dcfa0baae68851b1f55f2a0a9,0e3b977a8f1be01dcfa0baae68851b1f55f2a0a9]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.14.136,4.15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.19.64,4.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.1.15,5.2)"}}], "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": "semver", "value": "5.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.4,*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "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": "2026-07-25T21:15:03.195988+00:00", "updated": "2026-08-04T14:30:10.623166+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}