CVE-2026-97955

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97955", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.205Z", "datePublished": "2026-09-25T10:23:01.968Z", "dateUpdated": "2026-10-19T09:11:21.414Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:11:21.414Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: restore the XDP program pointer when pre-allocation fails\n\nmana_xdp_set() publishes the new program into apc->bpf_prog before it\nallocates anything, because mana_pre_alloc_rxbufs() sizes the buffers\nfrom it via mana_get_rxbuf_cfg(). When that allocation fails the\nfunction returns the error directly, skipping the err_dealloc_rxbuffs\nlabel which is the only place that restores the previous pointer.\n\nThe attach is reported as failed, so the BPF core drops the reference it\nheld for the caller and the program can be freed, while apc->bpf_prog\nstill points at it. The next consumer of mana_xdp_get() - typically\nmana_chn_setxdp() from mana_alloc_queues() on the following ifup, or\nafter a TX timeout reset - then calls bpf_prog_add() on freed memory.\n\nThis is reachable from an ordinary \"ip link set dev ethX xdp obj ...\"\nwhenever the per-queue RX buffer pre-allocation cannot be satisfied.\n\nRestore the previous program on that error path."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_bpf.c"], "versions": [{"version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "lessThan": "5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8", "status": "affected", "versionType": "git"}, {"version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "lessThan": "9801edfba8dfcdb1da3b0afccdf143e13d646b56", "status": "affected", "versionType": "git"}, {"version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "lessThan": "4c46beb807efcc93f5899ebe1f5958248eb296c6", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_bpf.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.18", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8"}, {"url": "https://git.kernel.org/stable/c/9801edfba8dfcdb1da3b0afccdf143e13d646b56"}, {"url": "https://git.kernel.org/stable/c/4c46beb807efcc93f5899ebe1f5958248eb296c6"}], "title": "net: mana: restore the XDP program pointer when pre-allocation fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_bpf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8", "status": "affected", "version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "versionType": "git"}, {"lessThan": "9801edfba8dfcdb1da3b0afccdf143e13d646b56", "status": "affected", "version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "versionType": "git"}, {"lessThan": "4c46beb807efcc93f5899ebe1f5958248eb296c6", "status": "affected", "version": "730ff06d3f5cc2ce0348414b78c10528b767d4a3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/microsoft/mana/mana_bpf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nnet: mana: restore the XDP program pointer when pre-allocation fails\n\nmana_xdp_set() publishes the new program into apc->bpf_prog before it\nallocates anything, because mana_pre_alloc_rxbufs() sizes the buffers\nfrom it via mana_get_rxbuf_cfg(). When that allocation fails the\nfunction returns the error directly, skipping the err_dealloc_rxbuffs\nlabel which is the only place that restores the previous pointer.\n\nThe attach is reported as failed, so the BPF core drops the reference it\nheld for the caller and the program can be freed, while apc->bpf_prog\nstill points at it. The next consumer of mana_xdp_get() - typically\nmana_chn_setxdp() from mana_alloc_queues() on the following ifup, or\nafter a TX timeout reset - then calls bpf_prog_add() on freed memory.\n\nThis is reachable from an ordinary \"ip link set dev ethX xdp obj ...\"\nwhenever the per-queue RX buffer pre-allocation cannot be satisfied.\n\nRestore the previous program on that error path."}], "id": "CVE-2026-97955", "lastModified": "2026-10-19T10:17:46.807", "metrics": {}, "published": "2026-09-25T11:17:23.147", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c46beb807efcc93f5899ebe1f5958248eb296c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9801edfba8dfcdb1da3b0afccdf143e13d646b56"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: mana: restore the XDP program pointer when pre-allocation fails", "id": "2541033", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541033"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: mana: restore the XDP program pointer when pre-allocation fails\nmana_xdp_set() publishes the new program into apc->bpf_prog before it\nallocates anything, because mana_pre_alloc_rxbufs() sizes the buffers\nfrom it via mana_get_rxbuf_cfg(). When that allocation fails the\nfunction returns the error directly, skipping the err_dealloc_rxbuffs\nlabel which is the only place that restores the previous pointer.\nThe attach is reported as failed, so the BPF core drops the reference it\nheld for the caller and the program can be freed, while apc->bpf_prog\nstill points at it. The next consumer of mana_xdp_get() - typically\nmana_chn_setxdp() from mana_alloc_queues() on the following ifup, or\nafter a TX timeout reset - then calls bpf_prog_add() on freed memory.\nThis is reachable from an ordinary \"ip link set dev ethX xdp obj ...\"\nwhenever the per-queue RX buffer pre-allocation cannot be satisfied.\nRestore the previous program on that error path.", "A flaw was found in the Microsoft Azure Network Adapter (MANA) driver in the Linux kernel. A local user with network administrative privileges can cause a denial of service (DoS) or potentially execute arbitrary code due to a use-after-free vulnerability. When attaching an eXpress Data Path (XDP) program fails during receive buffer allocation, the driver fails to restore the prior program pointer, leaving a dangling reference to memory that has been freed. Subsequent network interface operations access this invalid memory, resulting in memory corruption and a system crash."], "name": "CVE-2026-97955", "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": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not 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"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97955\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97955\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97955.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[730ff06d3f5cc2ce0348414b78c10528b767d4a3,5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[730ff06d3f5cc2ce0348414b78c10528b767d4a3,9801edfba8dfcdb1da3b0afccdf143e13d646b56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[730ff06d3f5cc2ce0348414b78c10528b767d4a3,4c46beb807efcc93f5899ebe1f5958248eb296c6)"}}], "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": "6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.7,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-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": "2026-09-25T15:00:20.849636+00:00", "updated": "2026-10-01T08:15:05.204662+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}