{"id":"CVE-2026-53000","aliases":[],"cve":{"records":[{"id":"CVE-2026-53000","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-06-09T07:44:35.377Z","published":"2026-06-24T16:29:12.635Z","modified":"2026-10-30T12:26:25.872Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:26:25.872Z"},{"name":"redhat-SADP","role":"ADP","organizationId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","modified":"2026-09-17T12:04:39.036Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-19T19:47:12.990Z"}],"references":[{"url":"https://git.kernel.org/stable/c/bf17f1d3b307196d9282c4b1dd8be0d0e5f8e529","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/ede973d62d26d9c550269af05366ab9e30fc92ee","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/050f98e56782b14677c5bae50800e60775bbf6bb","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/32fdd2e38e7435a368d88f5977a7d6585ebc8b0e","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/3c7511f38ab511b791196b13ae48bf4973bf7dfd","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/6eda0d771f94267f73f57c94630aa47e90957915","tags":[],"source":"Linux"},{"url":"https://access.redhat.com/security/cve/CVE-2026-53000","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat-SADP"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492273","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat-SADP"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53000.json","tags":["x_sadp-csaf-vex"],"source":"redhat-SADP"},{"url":"https://access.redhat.com/errata/RHSA-2026:55445","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat-SADP"},{"url":"https://access.redhat.com/errata/RHSA-2026:68100","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat-SADP"},{"url":"https://access.redhat.com/errata/RHSA-2026:67720","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat-SADP"},{"url":"https://access.redhat.com/errata/RHSA-2026:64808","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat-SADP"}],"weaknesses":[{"id":"CWE-763","description":"Release of Invalid Pointer or Reference","source":"redhat-SADP"},{"id":"CWE-763","description":"CWE-763 Release of Invalid Pointer or Reference","source":"CISA-ADP"}],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.1"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-16T15:24:26.886742Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"netfilter: nat: use kfree_rcu to release ops","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nat: use kfree_rcu to release ops\n\nFlorian Westphal says:\n\n\"Historically this is not an issue, even for normal base hooks: the data\npath doesn't use the original nf_hook_ops that are used to register the\ncallbacks.\n\nHowever, in v5.14 I added the ability to dump the active netfilter\nhooks from userspace.\n\nThis code will peek back into the nf_hook_ops that are available\nat the tail of the pointer-array blob used by the datapath.\n\nThe nat hooks are special, because they are called indirectly from\nthe central nat dispatcher hook. They are currently invisible to\nthe nfnl hook dump subsystem though.\n\nBut once that changes the nat ops structures have to be deferred too.\"\n\nUpdate nf_nat_register_fn() to deal with partial exposition of the hooks\nfrom error path which can be also an issue for nfnetlink_hook.","score":7.8,"severity":"high","published":"2026-06-24T16:29:12.635Z","modified":"2026-10-30T12:26:25.872Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"bf17f1d3b307196d9282c4b1dd8be0d0e5f8e529","versionType":"git"},{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"ede973d62d26d9c550269af05366ab9e30fc92ee","versionType":"git"},{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"050f98e56782b14677c5bae50800e60775bbf6bb","versionType":"git"},{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"32fdd2e38e7435a368d88f5977a7d6585ebc8b0e","versionType":"git"},{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"3c7511f38ab511b791196b13ae48bf4973bf7dfd","versionType":"git"},{"version":"e2cf17d3774c323ef6dab6e9f7c0cfc5e742afd9","status":"affected","lessThan":"6eda0d771f94267f73f57c94630aa47e90957915","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10.0 Extended Update Support","platforms":[],"versions":[{"version":"0:6.12.0-55.98.1.el10_0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[{"version":"0:5.14.0-687.45.1.el9_8","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9","cpe:/o:redhat:enterprise_linux:9"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.6 Extended Update Support","platforms":[],"versions":[{"version":"0:5.14.0-570.141.1.el9_6","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_eus:9.6"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 6","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"],"source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"}],"remediation":[{"text":"RHSA-2026:55445: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0), Red Hat Enterprise Linux Real Time EUS (v. 10.0), Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)","source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"text":"RHSA-2026:68100: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4), Red Hat Enterprise Linux Real Time E4S (v.9.4), Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)","source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"text":"RHSA-2026:67720: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat Enterprise Linux Real Time EUS (v.9.6), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)","source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"},{"text":"RHSA-2026:64808: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)","source":"redhat-SADP","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"}],"references":["https://git.kernel.org/stable/c/bf17f1d3b307196d9282c4b1dd8be0d0e5f8e529","https://git.kernel.org/stable/c/ede973d62d26d9c550269af05366ab9e30fc92ee","https://git.kernel.org/stable/c/050f98e56782b14677c5bae50800e60775bbf6bb","https://git.kernel.org/stable/c/32fdd2e38e7435a368d88f5977a7d6585ebc8b0e","https://git.kernel.org/stable/c/3c7511f38ab511b791196b13ae48bf4973bf7dfd","https://git.kernel.org/stable/c/6eda0d771f94267f73f57c94630aa47e90957915","https://access.redhat.com/security/cve/CVE-2026-53000","https://bugzilla.redhat.com/show_bug.cgi?id=2492273","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53000.json","https://access.redhat.com/errata/RHSA-2026:55445","https://access.redhat.com/errata/RHSA-2026:68100","https://access.redhat.com/errata/RHSA-2026:67720","https://access.redhat.com/errata/RHSA-2026:64808"],"sources":[{"name":"CVE","id":"CVE-2026-53000","modified":"2026-10-30T12:26:25.872Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},{"source":"redhat-SADP","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7}],"sourceAffected":[],"observedAt":"2026-10-30T12:59:05.970Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:30:30.969Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"The Linux kernel is affected by a vulnerability in netfilter nat, where the use of kfree_rcu to release ops may cause issues. The vulnerability is present in versions 5.14 to 6.1.191, 6.6.160, 6.12.114, 6.18.33, and 7.0.10. The weakness is a release of an invalid pointer or reference.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-01T07:32:17.977Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-53000"}]}}