{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53094", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.384Z", "datePublished": "2026-06-24T16:30:32.815Z", "dateUpdated": "2026-08-05T12:33:20.910Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:20.910Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix stale offload->prog pointer after constant blinding\n\nWhen a dev-bound-only BPF program (BPF_F_XDP_DEV_BOUND_ONLY) undergoes\nJIT compilation with constant blinding enabled (bpf_jit_harden >= 2),\nbpf_jit_blind_constants() clones the program. The original prog is then\nfreed in bpf_jit_prog_release_other(), which updates aux->prog to point\nto the surviving clone, but fails to update offload->prog.\n\nThis leaves offload->prog pointing to the freed original program. When\nthe network namespace is subsequently destroyed, cleanup_net() triggers\nbpf_dev_bound_netdev_unregister(), which iterates ondev->progs and calls\n__bpf_prog_offload_destroy(offload->prog). Accessing the freed prog\ncauses a page fault:\n\nBUG: unable to handle page fault for address: ffffc900085f1038\nWorkqueue: netns cleanup_net\nRIP: 0010:__bpf_prog_offload_destroy+0xc/0x80\nCall Trace:\n__bpf_offload_dev_netdev_unregister+0x257/0x350\nbpf_dev_bound_netdev_unregister+0x4a/0x90\nunregister_netdevice_many_notify+0x2a2/0x660\n...\ncleanup_net+0x21a/0x320\n\nThe test sequence that triggers this reliably is:\n\n1. Set net.core.bpf_jit_harden=2 (echo 2 > /proc/sys/net/core/bpf_jit_harden)\n2. Run xdp_metadata selftest, which creates a dev-bound-only XDP\n program on a veth inside a netns (./test_progs -t xdp_metadata)\n3. cleanup_net -> page fault in __bpf_prog_offload_destroy\n\nDev-bound-only programs are unique in that they have an offload structure\nbut go through the normal JIT path instead of bpf_prog_offload_compile().\nThis means they are subject to constant blinding's prog clone-and-replace,\nwhile also having offload->prog that must stay in sync.\n\nFix this by updating offload->prog in bpf_jit_prog_release_other(),\nalongside the existing aux->prog update. Both are back-pointers to\nthe prog that must be kept in sync when the prog is replaced."}], "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 vulnerable path is reached through local `bpf(BPF_PROG_LOAD)` and netlink/netns operations used to create and tear down a device-bound XDP program, not by remote packets.\nAC:L - Once the target has BPF JIT hardening set to blind constants for all users, the trigger is deterministic: load a dev-bound-only XDP program with constants, then unregister the device or destroy the netns. There is no attacker-uncontrolled race to win.\nPR:L - XDP program loading requires BPF and NET_ADMIN privileges, but these can be available in user-namespace/container deployments through BPF token delegation and namespaced capabilities. Under the required rule, this is scored as Low rather than High.\nUI:N - No victim action is required after the attacker has local execution; the attacker can perform the BPF load and netdevice/netns teardown directly.\nS:U - The bug corrupts/dereferences kernel memory within the same kernel security authority. This is standard local kernel compromise/DoS rather than a VM or hardware isolation boundary escape.\nC:H - The stale `offload->prog` is a use-after-free of a `struct bpf_prog`; if reclaimed, the cleanup path trusts attacker-shaped pointers and can be developed into kernel memory disclosure primitives. Kernel UAFs are scored High for confidentiality.\nI:H - The same UAF can drive trusted list/free/write operations through forged `prog->aux` and `offload` pointers, making arbitrary kernel memory corruption or code execution plausible. Kernel UAFs are scored High for integrity.\nA:H - The upstream report shows a reliable kernel page fault during `cleanup_net()`/netdevice unregister when the stale pointer is dereferenced. This is a kernel crash availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/core.c"], "versions": [{"version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "lessThan": "a713b72ff88cdab4d5d692908ab1259ada511f4d", "status": "affected", "versionType": "git"}, {"version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "lessThan": "25484c39d1ec82a0368798d956da3de5039b3fe8", "status": "affected", "versionType": "git"}, {"version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "lessThan": "059525cf18e69a9313baf947d8898c6ee7ca6b65", "status": "affected", "versionType": "git"}, {"version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "lessThan": "c79f8503d83d4665be461fb9e45e215d0380c67b", "status": "affected", "versionType": "git"}, {"version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "lessThan": "a1aa9ef47c299c5bbc30594d3c2f0589edf908e6", "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/core.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.3", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a713b72ff88cdab4d5d692908ab1259ada511f4d"}, {"url": "https://git.kernel.org/stable/c/25484c39d1ec82a0368798d956da3de5039b3fe8"}, {"url": "https://git.kernel.org/stable/c/059525cf18e69a9313baf947d8898c6ee7ca6b65"}, {"url": "https://git.kernel.org/stable/c/c79f8503d83d4665be461fb9e45e215d0380c67b"}, {"url": "https://git.kernel.org/stable/c/a1aa9ef47c299c5bbc30594d3c2f0589edf908e6"}], "title": "bpf: Fix stale offload->prog pointer after constant blinding", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a713b72ff88cdab4d5d692908ab1259ada511f4d", "status": "affected", "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "versionType": "git"}, {"lessThan": "25484c39d1ec82a0368798d956da3de5039b3fe8", "status": "affected", "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "versionType": "git"}, {"lessThan": "059525cf18e69a9313baf947d8898c6ee7ca6b65", "status": "affected", "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "versionType": "git"}, {"lessThan": "c79f8503d83d4665be461fb9e45e215d0380c67b", "status": "affected", "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "versionType": "git"}, {"lessThan": "a1aa9ef47c299c5bbc30594d3c2f0589edf908e6", "status": "affected", "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.3"}, {"lessThan": "6.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.141", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.91", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.33", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "681DADD7-FC7E-47E6-AC5C-0E445F6F3E42", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix stale offload->prog pointer after constant blinding\n\nWhen a dev-bound-only BPF program (BPF_F_XDP_DEV_BOUND_ONLY) undergoes\nJIT compilation with constant blinding enabled (bpf_jit_harden >= 2),\nbpf_jit_blind_constants() clones the program. The original prog is then\nfreed in bpf_jit_prog_release_other(), which updates aux->prog to point\nto the surviving clone, but fails to update offload->prog.\n\nThis leaves offload->prog pointing to the freed original program. When\nthe network namespace is subsequently destroyed, cleanup_net() triggers\nbpf_dev_bound_netdev_unregister(), which iterates ondev->progs and calls\n__bpf_prog_offload_destroy(offload->prog). Accessing the freed prog\ncauses a page fault:\n\nBUG: unable to handle page fault for address: ffffc900085f1038\nWorkqueue: netns cleanup_net\nRIP: 0010:__bpf_prog_offload_destroy+0xc/0x80\nCall Trace:\n__bpf_offload_dev_netdev_unregister+0x257/0x350\nbpf_dev_bound_netdev_unregister+0x4a/0x90\nunregister_netdevice_many_notify+0x2a2/0x660\n...\ncleanup_net+0x21a/0x320\n\nThe test sequence that triggers this reliably is:\n\n1. Set net.core.bpf_jit_harden=2 (echo 2 > /proc/sys/net/core/bpf_jit_harden)\n2. Run xdp_metadata selftest, which creates a dev-bound-only XDP\n program on a veth inside a netns (./test_progs -t xdp_metadata)\n3. cleanup_net -> page fault in __bpf_prog_offload_destroy\n\nDev-bound-only programs are unique in that they have an offload structure\nbut go through the normal JIT path instead of bpf_prog_offload_compile().\nThis means they are subject to constant blinding's prog clone-and-replace,\nwhile also having offload->prog that must stay in sync.\n\nFix this by updating offload->prog in bpf_jit_prog_release_other(),\nalongside the existing aux->prog update. Both are back-pointers to\nthe prog that must be kept in sync when the prog is replaced."}], "id": "CVE-2026-53094", "lastModified": "2026-07-21T18:22:07.227", "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": "2026-06-24T17:17:23.580", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/059525cf18e69a9313baf947d8898c6ee7ca6b65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/25484c39d1ec82a0368798d956da3de5039b3fe8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a1aa9ef47c299c5bbc30594d3c2f0589edf908e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a713b72ff88cdab4d5d692908ab1259ada511f4d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c79f8503d83d4665be461fb9e45e215d0380c67b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bpf: Fix stale offload->prog pointer after constant blinding", "id": "2492459", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492459"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) component. When a dev-bound-only BPF program undergoes Just-In-Time (JIT) compilation with constant blinding enabled, a stale pointer to a freed program can occur. This issue arises when the network namespace is destroyed, leading to a page fault. A local attacker could exploit this to cause a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-53094", "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": "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": "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"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53094\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53094\nhttps://lore.kernel.org/linux-cve-announce/2026062410-CVE-2026-53094-7b3d@gregkh/T"], "statement": "This CVE has been rated as Moderate because eBPF (and XDP) is restricted to root-only on Red Hat Enterprise Linux.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b3486bc2d237ec345b3942b7be5deabf8c8fed1,a713b72ff88cdab4d5d692908ab1259ada511f4d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b3486bc2d237ec345b3942b7be5deabf8c8fed1,25484c39d1ec82a0368798d956da3de5039b3fe8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b3486bc2d237ec345b3942b7be5deabf8c8fed1,059525cf18e69a9313baf947d8898c6ee7ca6b65)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b3486bc2d237ec345b3942b7be5deabf8c8fed1,c79f8503d83d4665be461fb9e45e215d0380c67b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b3486bc2d237ec345b3942b7be5deabf8c8fed1,a1aa9ef47c299c5bbc30594d3c2f0589edf908e6)"}}], "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": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*]"}}], "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": "2026-06-24T20:15:07.668022+00:00", "updated": "2026-08-12T06:45:04.786722+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}