CVE-2026-97614

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97614", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.158Z", "datePublished": "2026-09-25T10:22:22.632Z", "dateUpdated": "2026-10-19T09:10:17.955Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:10:17.955Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: tag_brcm: legacy FCS: request needed tailroom\n\nThe legacy FCS tagger calculates the CRC over skb->len bytes starting at\nskb->data. When a nonlinear skb reaches the tagger, this reads past the\nlinear head into unrelated slab memory.\n\nThe tagger appends an Ethernet FCS but does not declare that tailroom. As a\nresult, DSA leaves NETIF_F_SG and NETIF_F_FRAGLIST enabled on the user\nport, and nonlinear skbs can reach the CRC calculation.\n\nDeclare the required tailroom. DSA will then clear those features and the\nnetworking core will linearize skbs before the tagger runs.\n\nA KASAN-enabled dsa_loop test using this tagger reports:\n\n BUG: KASAN: slab-out-of-bounds in crc32_le\n Read of size 1 at addr ffff8880397086c0 by task exp/135\n\n Call Trace:\n crc32_le (lib/crc/crc32-main.c:38)\n brcm_leg_fcs_tag_xmit (net/dsa/tag_brcm.c:343)\n dsa_user_xmit (net/dsa/user.c:942)\n dev_hard_start_xmit (net/core/dev.c:3937)\n __dev_queue_xmit (net/core/dev.c:4926)\n packet_sendmsg (net/packet/af_packet.c:3110)\n __sys_sendto (net/socket.c:2281)\n\n The buggy address belongs to the object at ffff888039708400\n which belongs to the cache skbuff_small_head of size 704\n The buggy address is located 0 bytes to the right of\n allocated 704-byte region [ffff888039708400, ffff8880397086c0)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/dsa/tag_brcm.c"], "versions": [{"version": "ef07df397a621707903ef0d294a7df11f80cf206", "lessThan": "709451db123d90743fa9104b48f324a8e49f8c6f", "status": "affected", "versionType": "git"}, {"version": "ef07df397a621707903ef0d294a7df11f80cf206", "lessThan": "3eb5c7e1c154c74568620a25c6751bb8d6d8d728", "status": "affected", "versionType": "git"}, {"version": "ef07df397a621707903ef0d294a7df11f80cf206", "lessThan": "5be081b83abd3f17d908953b4bb77279f5a149e3", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/dsa/tag_brcm.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "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": "6.17", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/709451db123d90743fa9104b48f324a8e49f8c6f"}, {"url": "https://git.kernel.org/stable/c/3eb5c7e1c154c74568620a25c6751bb8d6d8d728"}, {"url": "https://git.kernel.org/stable/c/5be081b83abd3f17d908953b4bb77279f5a149e3"}], "title": "net: dsa: tag_brcm: legacy FCS: request needed tailroom", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/dsa/tag_brcm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "709451db123d90743fa9104b48f324a8e49f8c6f", "status": "affected", "version": "ef07df397a621707903ef0d294a7df11f80cf206", "versionType": "git"}, {"lessThan": "3eb5c7e1c154c74568620a25c6751bb8d6d8d728", "status": "affected", "version": "ef07df397a621707903ef0d294a7df11f80cf206", "versionType": "git"}, {"lessThan": "5be081b83abd3f17d908953b4bb77279f5a149e3", "status": "affected", "version": "ef07df397a621707903ef0d294a7df11f80cf206", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/dsa/tag_brcm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "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: dsa: tag_brcm: legacy FCS: request needed tailroom\n\nThe legacy FCS tagger calculates the CRC over skb->len bytes starting at\nskb->data. When a nonlinear skb reaches the tagger, this reads past the\nlinear head into unrelated slab memory.\n\nThe tagger appends an Ethernet FCS but does not declare that tailroom. As a\nresult, DSA leaves NETIF_F_SG and NETIF_F_FRAGLIST enabled on the user\nport, and nonlinear skbs can reach the CRC calculation.\n\nDeclare the required tailroom. DSA will then clear those features and the\nnetworking core will linearize skbs before the tagger runs.\n\nA KASAN-enabled dsa_loop test using this tagger reports:\n\n BUG: KASAN: slab-out-of-bounds in crc32_le\n Read of size 1 at addr ffff8880397086c0 by task exp/135\n\n Call Trace:\n crc32_le (lib/crc/crc32-main.c:38)\n brcm_leg_fcs_tag_xmit (net/dsa/tag_brcm.c:343)\n dsa_user_xmit (net/dsa/user.c:942)\n dev_hard_start_xmit (net/core/dev.c:3937)\n __dev_queue_xmit (net/core/dev.c:4926)\n packet_sendmsg (net/packet/af_packet.c:3110)\n __sys_sendto (net/socket.c:2281)\n\n The buggy address belongs to the object at ffff888039708400\n which belongs to the cache skbuff_small_head of size 704\n The buggy address is located 0 bytes to the right of\n allocated 704-byte region [ffff888039708400, ffff8880397086c0)"}], "id": "CVE-2026-97614", "lastModified": "2026-10-19T10:17:31.580", "metrics": {}, "published": "2026-09-25T11:17:15.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3eb5c7e1c154c74568620a25c6751bb8d6d8d728"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5be081b83abd3f17d908953b4bb77279f5a149e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/709451db123d90743fa9104b48f324a8e49f8c6f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: dsa: tag_brcm: legacy FCS: request needed tailroom", "id": "2541150", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541150"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: dsa: tag_brcm: legacy FCS: request needed tailroom\nThe legacy FCS tagger calculates the CRC over skb->len bytes starting at\nskb->data. When a nonlinear skb reaches the tagger, this reads past the\nlinear head into unrelated slab memory.\nThe tagger appends an Ethernet FCS but does not declare that tailroom. As a\nresult, DSA leaves NETIF_F_SG and NETIF_F_FRAGLIST enabled on the user\nport, and nonlinear skbs can reach the CRC calculation.\nDeclare the required tailroom. DSA will then clear those features and the\nnetworking core will linearize skbs before the tagger runs.\nA KASAN-enabled dsa_loop test using this tagger reports:\nBUG: KASAN: slab-out-of-bounds in crc32_le\nRead of size 1 at addr ffff8880397086c0 by task exp/135\nCall Trace:\ncrc32_le (lib/crc/crc32-main.c:38)\nbrcm_leg_fcs_tag_xmit (net/dsa/tag_brcm.c:343)\ndsa_user_xmit (net/dsa/user.c:942)\ndev_hard_start_xmit (net/core/dev.c:3937)\n__dev_queue_xmit (net/core/dev.c:4926)\npacket_sendmsg (net/packet/af_packet.c:3110)\n__sys_sendto (net/socket.c:2281)\nThe buggy address belongs to the object at ffff888039708400\nwhich belongs to the cache skbuff_small_head of size 704\nThe buggy address is located 0 bytes to the right of\nallocated 704-byte region [ffff888039708400, ffff8880397086c0)", "A flaw was found in the Linux kernel's Distributed Switch Architecture (DSA) Broadcom tagger. The legacy Frame Check Sequence (FCS) tag handler failed to declare the required buffer tailroom, allowing non-linear network packet buffers to reach the checksum calculation routine. A local user could exploit this flaw by transmitting specially crafted network traffic, triggering an out-of-bounds memory read. This issue primarily leads to a kernel crash, resulting in a Denial of Service (DoS), or the potential disclosure of sensitive memory."], "name": "CVE-2026-97614", "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"}, {"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": "Not 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-2026-97614\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97614\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97614.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ef07df397a621707903ef0d294a7df11f80cf206,709451db123d90743fa9104b48f324a8e49f8c6f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ef07df397a621707903ef0d294a7df11f80cf206,3eb5c7e1c154c74568620a25c6751bb8d6d8d728)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ef07df397a621707903ef0d294a7df11f80cf206,5be081b83abd3f17d908953b4bb77279f5a149e3)"}}], "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": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.7,7.3.0)"}}, {"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": "2026-09-25T13:30:19.720816+00:00", "updated": "2026-10-01T09:00:05.488184+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}