CVE-2026-99236

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99236", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.402Z", "datePublished": "2026-11-02T16:06:41.950Z", "dateUpdated": "2026-11-03T19:13:04.332Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-03T19:13:04.332Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Reject incomplete event filter expressions\n\nA non-empty expression normally finishes in predicate_parse()'s inner\nloop, which resolves the pending logical operators before jumping to\nfinalization. If the input ends after an operator, possibly followed by\nunary '!' tokens, the outer loop instead falls through with unresolved\noperator state.\n\nFor example, \"common_pid == 1 || common_pid == 2 &&\" leaves\nprog[0].target equal to -1. The second pass then reads prog[-1] before\nthe forward-jump check can reject it. Depending on adjacent slab\ncontents, it can also copy an out-of-bounds word into a branch target\nthat passes the forward-only check. A self-targeted perf tracepoint\ncounting event can reach this path through PERF_EVENT_IOC_SET_FILTER.\n\nReject the outer-loop fallthrough when a predicate has already been\nparsed. This ensures that non-empty expressions only reach finalization\nafter the inner loop has resolved their operators. Keep the existing\nno-filter error for input that has no predicates. Add a regression test\nfor trailing logical operators and unary negations."}], "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 incomplete expression is copied from userspace by perf_event_set_filter() via ioctl(PERF_EVENT_IOC_SET_FILTER) on a PERF_TYPE_TRACEPOINT fd, then passed to ftrace_profile_set_filter(), create_filter(), process_preds(), and the patched predicate_parse(). No network protocol carries the filter string.\nAC:L - A trailing operator such as \"common_pid == 1 || common_pid == 2 &&\" makes predicate_parse() leave the outer loop with N>0 and prog[0].target still -1, so the second pass always reads prog[-1]. No race or admin-triggered state is required; a positive copied target that passes the forward-only check can be placed in the adjacent kmalloc object by heap spray.\nPR:L - An unprivileged process can open a self-targeted PERF_TYPE_TRACEPOINT counting event with exclude_kernel=1 and no PERF_SAMPLE_RAW: sys_perf_event_open() skips perf_allow_kernel(), and perf_trace_event_perm() returns 0 before perf_allow_tracepoint(). The same fd's owner then calls PERF_EVENT_IOC_SET_FILTER.\nUI:N - The attacking process itself performs perf_event_open() and ioctl(PERF_EVENT_IOC_SET_FILTER); no other user must mount a filesystem, write a tracefs filter file, or otherwise act.\nS:U - predicate_parse() underflows the kmalloc'd prog_stack in the host kernel that already enforces perf access; a resulting local kernel memory-safety issue does not cross a guest-host, IOMMU, or other security authority.\nC:H - The second pass reads prog[-1] and may copy its target into prog[0]. filter_match_preds() then uses that value as a program index, so a large copied word walks off the allocation and interprets heap as struct filter_pred, which is an unbounded kernel read rather than a few-byte leak.\nI:H - A groomed out-of-range prog_entry can make filter_match_preds() call filter_pred_fn_call() on a fake filter_pred. FILTER_PRED_FN_STRING reaches pred->regex->match, an attacker-influenced function pointer, so the corrupted branch target is exploitable for control-flow hijack rather than only a counting mismatch.\nA:H - With a wild target, filter_match_preds() dereferences prog[i].pred off the allocation. A sys_enter_* counting event still evaluates the filter because perf_syscall_enter() passes user pt_regs, so user_mode() is true and exclude_kernel=1 does not skip perf_tp_filter_match(); the attacker then oopses the kernel by making a syscall."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events_filter.c", "tools/testing/selftests/ftrace/test.d/filter/event-filter-incomplete.tc"], "versions": [{"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "4a1a6d35359991c5d47f4bf101cfbe1475c94093", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "2a98f5d4913ec081e08e1075512cb7ec313d9f72", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "15ff3cc7f2beecc3f95d66358f20ad7b057466aa", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "b205ff58e02922ac324f931cf9eb238a3acdb048", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "5a999b5a16530898f0dbe5f8c50fd45ea72e110b", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "1008e9e0b8280d47f1ab5e9c113f666a023a9697", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "64993d970dde2a2da353e9e99595a4fa88ec27d9", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46", "status": "affected", "versionType": "git"}, {"version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "lessThan": "1fdc4164e488916402badddbb1f51e9380dabb91", "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/trace/trace_events_filter.c", "tools/testing/selftests/ftrace/test.d/filter/event-filter-incomplete.tc"], "versions": [{"version": "4.17", "status": "affected"}, {"version": "0", "lessThan": "4.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.161", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.115", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.60", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.14", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3.1", "lessThanOrEqual": "7.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.4-rc1", "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": "4.17", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.6.161"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.12.115"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.18.60"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.2.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.3.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.4-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4a1a6d35359991c5d47f4bf101cfbe1475c94093"}, {"url": "https://git.kernel.org/stable/c/2a98f5d4913ec081e08e1075512cb7ec313d9f72"}, {"url": "https://git.kernel.org/stable/c/15ff3cc7f2beecc3f95d66358f20ad7b057466aa"}, {"url": "https://git.kernel.org/stable/c/b205ff58e02922ac324f931cf9eb238a3acdb048"}, {"url": "https://git.kernel.org/stable/c/5a999b5a16530898f0dbe5f8c50fd45ea72e110b"}, {"url": "https://git.kernel.org/stable/c/1008e9e0b8280d47f1ab5e9c113f666a023a9697"}, {"url": "https://git.kernel.org/stable/c/64993d970dde2a2da353e9e99595a4fa88ec27d9"}, {"url": "https://git.kernel.org/stable/c/5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46"}, {"url": "https://git.kernel.org/stable/c/1fdc4164e488916402badddbb1f51e9380dabb91"}], "title": "tracing: Reject incomplete event filter expressions", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace_events_filter.c", "tools/testing/selftests/ftrace/test.d/filter/event-filter-incomplete.tc"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "4a1a6d35359991c5d47f4bf101cfbe1475c94093", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "2a98f5d4913ec081e08e1075512cb7ec313d9f72", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "15ff3cc7f2beecc3f95d66358f20ad7b057466aa", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "b205ff58e02922ac324f931cf9eb238a3acdb048", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "5a999b5a16530898f0dbe5f8c50fd45ea72e110b", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "1008e9e0b8280d47f1ab5e9c113f666a023a9697", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "64993d970dde2a2da353e9e99595a4fa88ec27d9", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}, {"lessThan": "1fdc4164e488916402badddbb1f51e9380dabb91", "status": "affected", "version": "80765597bc587feae8dbc8ce97a0f32e12a6e625", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/trace_events_filter.c", "tools/testing/selftests/ftrace/test.d/filter/event-filter-incomplete.tc"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.17"}, {"lessThan": "4.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.161", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.115", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.60", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.14", "versionType": "semver"}, {"lessThanOrEqual": "7.3.*", "status": "unaffected", "version": "7.3.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.4-rc1", "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\ntracing: Reject incomplete event filter expressions\n\nA non-empty expression normally finishes in predicate_parse()'s inner\nloop, which resolves the pending logical operators before jumping to\nfinalization. If the input ends after an operator, possibly followed by\nunary '!' tokens, the outer loop instead falls through with unresolved\noperator state.\n\nFor example, \"common_pid == 1 || common_pid == 2 &&\" leaves\nprog[0].target equal to -1. The second pass then reads prog[-1] before\nthe forward-jump check can reject it. Depending on adjacent slab\ncontents, it can also copy an out-of-bounds word into a branch target\nthat passes the forward-only check. A self-targeted perf tracepoint\ncounting event can reach this path through PERF_EVENT_IOC_SET_FILTER.\n\nReject the outer-loop fallthrough when a predicate has already been\nparsed. This ensures that non-empty expressions only reach finalization\nafter the inner loop has resolved their operators. Keep the existing\nno-filter error for input that has no predicates. Add a regression test\nfor trailing logical operators and unary negations."}], "id": "CVE-2026-99236", "lastModified": "2026-11-03T20:18:29.827", "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": "2026-11-02T16:17:49.003", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1008e9e0b8280d47f1ab5e9c113f666a023a9697"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/15ff3cc7f2beecc3f95d66358f20ad7b057466aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1fdc4164e488916402badddbb1f51e9380dabb91"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a98f5d4913ec081e08e1075512cb7ec313d9f72"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4a1a6d35359991c5d47f4bf101cfbe1475c94093"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5a999b5a16530898f0dbe5f8c50fd45ea72e110b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64993d970dde2a2da353e9e99595a4fa88ec27d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b205ff58e02922ac324f931cf9eb238a3acdb048"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: kernel: privilege escalation via incomplete event filter expressions", "id": "2565258", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2565258"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntracing: Reject incomplete event filter expressions\nA non-empty expression normally finishes in predicate_parse()'s inner\nloop, which resolves the pending logical operators before jumping to\nfinalization. If the input ends after an operator, possibly followed by\nunary '!' tokens, the outer loop instead falls through with unresolved\noperator state.\nFor example, \"common_pid == 1 || common_pid == 2 &&\" leaves\nprog[0].target equal to -1. The second pass then reads prog[-1] before\nthe forward-jump check can reject it. Depending on adjacent slab\ncontents, it can also copy an out-of-bounds word into a branch target\nthat passes the forward-only check. A self-targeted perf tracepoint\ncounting event can reach this path through PERF_EVENT_IOC_SET_FILTER.\nReject the outer-loop fallthrough when a predicate has already been\nparsed. This ensures that non-empty expressions only reach finalization\nafter the inner loop has resolved their operators. Keep the existing\nno-filter error for input that has no predicates. Add a regression test\nfor trailing logical operators and unary negations.", "A flaw was found in the Linux kernel. A local user can trigger out-of-bounds memory access to achieve privilege escalation or arbitrary code execution by submitting an incomplete event filter expression containing trailing logical operators. Alternatively, exploiting this flaw can expose sensitive kernel memory or crash the operating system, resulting in a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "--- CME Mitigation Guidance (2026-11-04) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\nThe highest-value action is to block unprivileged access to perf_event_open and tracing event filter ioctls to prevent incomplete expressions from reaching predicate_parse(): upgrade to the corresponding fixed Red Hat builds, which reject outer-loop fallthrough with -EINVAL when predicates have already been parsed, closing all 2 injection vectors (PERF_EVENT_IOC_SET_FILTER ioctl on self-targeted perf counting events, tracing event filter configuration interface). Until patched, this is only a concern on Linux systems where local users can invoke perf_event_open and ioctls or access trace event filters \u2014 Non-Linux platforms are unaffected \u2014 so Restrict and audit local user access to the perf_event_open subsystem and trace event filter configuration interfaces. As a compensating measure, Enable KASAN or HWASan runtime memory error detection to detect out-of-bounds reads in kernel slab memory, Enable Supervisor Mode Execution Prevention to prevent execution of userspace payload code during privilege escalation, Enforce Control Flow Integrity or Shadow Call Stack to prevent unauthorized redirection via corrupted branch targets, Enable kernel memory zero-initialization via init_on_alloc to mitigate reuse of stale slab data in branch targets, Maintain SELinux in enforcing mode to restrict access to tracing interfaces and confine privilege escalation blast radius, and Map local users to confined SELinux domains to limit access to tracing interfaces and post-escalation capabilities. These controls limit blast radius and contain exploitation, but they do not fix the underlying incomplete filter expression out-of-bounds read defect \u2014 apply the upstream patch to fully remediate.\nHighest-impact CME: CME-601 Kernel-Level Syscall Filtering (seccomp) (high)"}, "name": "CVE-2026-99236", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:5", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-10", "product_name": "Red Hat OpenShift Container Platform 5"}, {"cpe": "cpe:/a:redhat:openshift:5", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 5"}], "public_date": "2026-11-02T16:06:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99236\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99236\nhttps://git.kernel.org/stable/c/1008e9e0b8280d47f1ab5e9c113f666a023a9697\nhttps://git.kernel.org/stable/c/15ff3cc7f2beecc3f95d66358f20ad7b057466aa\nhttps://git.kernel.org/stable/c/2a98f5d4913ec081e08e1075512cb7ec313d9f72\nhttps://git.kernel.org/stable/c/4a1a6d35359991c5d47f4bf101cfbe1475c94093\nhttps://git.kernel.org/stable/c/5a999b5a16530898f0dbe5f8c50fd45ea72e110b\nhttps://git.kernel.org/stable/c/5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46\nhttps://git.kernel.org/stable/c/64993d970dde2a2da353e9e99595a4fa88ec27d9\nhttps://git.kernel.org/stable/c/b205ff58e02922ac324f931cf9eb238a3acdb048"], "statement": "This vulnerability is rated as an Important severity impact for Red Hat Enterprise Linux because unprivileged local attackers can exploit it to gain root privileges or force a kernel crash. Under default system configurations, trace event filtering can be reached by non-root accounts via the performance event subsystem without administrative capabilities. While the flaw cannot be triggered across the network, the ability of local users to corrupt kernel memory and hijack control flow warrants an Important rating rather than Moderate.", "threat_severity": "Important"}

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"linux"}], "created": "2026-11-02T18:15:14.643704+00:00", "updated": "2026-11-05T04:00:15.841284+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}