CVE-2026-72341

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72341", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.920Z", "datePublished": "2026-08-15T05:55:47.764Z", "dateUpdated": "2026-10-30T12:29:09.273Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:29:09.273Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix publication race for priv->channel_stats[]\n\nmlx5e_channel_stats_alloc() publishes a new entry to\npriv->channel_stats[] and then increments priv->stats_nch as a\npublication token, but neither store carries any memory barrier:\n\n\tpriv->channel_stats[ix] = kvzalloc_node(...);\n\tif (!priv->channel_stats[ix])\n\t\treturn -ENOMEM;\n\tpriv->stats_nch++;\n\nConcurrent readers compute the loop bound from priv->stats_nch and\nthen dereference priv->channel_stats[i] using plain accesses, e.g.\n\n\tfor (i = 0; i < priv->stats_nch; i++) {\n\t\tstruct mlx5e_channel_stats *cs = priv->channel_stats[i];\n\t\t... cs->rq.packets ...\n\t}\n\nOn weakly-ordered architectures (ARM, PowerPC, RISC-V) the writes to\nchannel_stats[ix] and stats_nch may become visible to other CPUs out\nof program order. A reader can observe stats_nch == N while still\nseeing channel_stats[N-1] == NULL, leading to a NULL pointer\ndereference in the channel_stats loop.\n\nThis has been observed in production on BlueField-3 DPUs (arm64),\nwhere ovs-vswitchd queries netdev statistics over netlink during NIC\nbringup, racing mlx5e_open_channel() -> mlx5e_channel_stats_alloc()\non another CPU:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0x840\n Hardware name: BlueField-3 DPU\n pc : mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\n Call trace:\n mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\n dev_get_stats+0x50/0xc0\n ovs_vport_get_stats+0x38/0xac [openvswitch]\n ovs_vport_cmd_fill_info+0x194/0x290 [openvswitch]\n ovs_vport_cmd_get+0xbc/0x10c [openvswitch]\n genl_family_rcv_msg_doit+0xd0/0x160\n genl_rcv_msg+0xec/0x1f0\n netlink_rcv_skb+0x64/0x130\n genl_rcv+0x40/0x60\n netlink_unicast+0x2fc/0x370\n netlink_sendmsg+0x1dc/0x454\n ...\n __arm64_sys_sendmsg+0x2c/0x40\n\nAdd mlx5e_stats_nch_write() and mlx5e_stats_nch_read() helpers in en.h\nthat wrap the smp_store_release()/smp_load_acquire() pair on stats_nch.\nThe release/acquire pair establishes the contract:\n\n stats_nch == N => channel_stats[0..N-1] are visible and non-NULL.\n\nPublish the stats_nch increment via mlx5e_stats_nch_write() in the\nwriter (mlx5e_channel_stats_alloc()), and read stats_nch via\nmlx5e_stats_nch_read() in all readers: mlx5e RX/TX queue stats,\nmlx5e_get_base_stats(), ethtool channels stats, IPoIB stats, the\nsw_stats fold and the HV VHCA stats agent."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en.h", "drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/en_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c"], "versions": [{"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "df122c593735aa5e1c97457767aa10ed8fa972e0", "status": "affected", "versionType": "git"}, {"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "268869794170af37727816ad02051808adb9c9c3", "status": "affected", "versionType": "git"}, {"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "acd34d24342a28794e706ce8191ca6c3114a38ae", "status": "affected", "versionType": "git"}, {"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "5c7e3755abf663f033de24f917b77685e9543045", "status": "affected", "versionType": "git"}, {"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "815515ec68f527ca755cb1e2c1ff9148f6b3ea56", "status": "affected", "versionType": "git"}, {"version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "lessThan": "5a799714e8ca0bce9ea40694f49914cf1adbbaa9", "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/mellanox/mlx5/core/en.h", "drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/en_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.17", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/df122c593735aa5e1c97457767aa10ed8fa972e0"}, {"url": "https://git.kernel.org/stable/c/268869794170af37727816ad02051808adb9c9c3"}, {"url": "https://git.kernel.org/stable/c/acd34d24342a28794e706ce8191ca6c3114a38ae"}, {"url": "https://git.kernel.org/stable/c/5c7e3755abf663f033de24f917b77685e9543045"}, {"url": "https://git.kernel.org/stable/c/815515ec68f527ca755cb1e2c1ff9148f6b3ea56"}, {"url": "https://git.kernel.org/stable/c/5a799714e8ca0bce9ea40694f49914cf1adbbaa9"}], "title": "net/mlx5e: Fix publication race for priv->channel_stats[]", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en.h", "drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/en_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "df122c593735aa5e1c97457767aa10ed8fa972e0", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}, {"lessThan": "268869794170af37727816ad02051808adb9c9c3", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}, {"lessThan": "acd34d24342a28794e706ce8191ca6c3114a38ae", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}, {"lessThan": "5c7e3755abf663f033de24f917b77685e9543045", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}, {"lessThan": "815515ec68f527ca755cb1e2c1ff9148f6b3ea56", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}, {"lessThan": "5a799714e8ca0bce9ea40694f49914cf1adbbaa9", "status": "affected", "version": "fa691d0c9c0812b9045f3a9420862e47b3b92518", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en.h", "drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/en_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en_stats.c", "drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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/mlx5e: Fix publication race for priv->channel_stats[]\n\nmlx5e_channel_stats_alloc() publishes a new entry to\npriv->channel_stats[] and then increments priv->stats_nch as a\npublication token, but neither store carries any memory barrier:\n\n\tpriv->channel_stats[ix] = kvzalloc_node(...);\n\tif (!priv->channel_stats[ix])\n\t\treturn -ENOMEM;\n\tpriv->stats_nch++;\n\nConcurrent readers compute the loop bound from priv->stats_nch and\nthen dereference priv->channel_stats[i] using plain accesses, e.g.\n\n\tfor (i = 0; i < priv->stats_nch; i++) {\n\t\tstruct mlx5e_channel_stats *cs = priv->channel_stats[i];\n\t\t... cs->rq.packets ...\n\t}\n\nOn weakly-ordered architectures (ARM, PowerPC, RISC-V) the writes to\nchannel_stats[ix] and stats_nch may become visible to other CPUs out\nof program order. A reader can observe stats_nch == N while still\nseeing channel_stats[N-1] == NULL, leading to a NULL pointer\ndereference in the channel_stats loop.\n\nThis has been observed in production on BlueField-3 DPUs (arm64),\nwhere ovs-vswitchd queries netdev statistics over netlink during NIC\nbringup, racing mlx5e_open_channel() -> mlx5e_channel_stats_alloc()\non another CPU:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0x840\n Hardware name: BlueField-3 DPU\n pc : mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\n Call trace:\n mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\n dev_get_stats+0x50/0xc0\n ovs_vport_get_stats+0x38/0xac [openvswitch]\n ovs_vport_cmd_fill_info+0x194/0x290 [openvswitch]\n ovs_vport_cmd_get+0xbc/0x10c [openvswitch]\n genl_family_rcv_msg_doit+0xd0/0x160\n genl_rcv_msg+0xec/0x1f0\n netlink_rcv_skb+0x64/0x130\n genl_rcv+0x40/0x60\n netlink_unicast+0x2fc/0x370\n netlink_sendmsg+0x1dc/0x454\n ...\n __arm64_sys_sendmsg+0x2c/0x40\n\nAdd mlx5e_stats_nch_write() and mlx5e_stats_nch_read() helpers in en.h\nthat wrap the smp_store_release()/smp_load_acquire() pair on stats_nch.\nThe release/acquire pair establishes the contract:\n\n stats_nch == N => channel_stats[0..N-1] are visible and non-NULL.\n\nPublish the stats_nch increment via mlx5e_stats_nch_write() in the\nwriter (mlx5e_channel_stats_alloc()), and read stats_nch via\nmlx5e_stats_nch_read() in all readers: mlx5e RX/TX queue stats,\nmlx5e_get_base_stats(), ethtool channels stats, IPoIB stats, the\nsw_stats fold and the HV VHCA stats agent."}], "id": "CVE-2026-72341", "lastModified": "2026-10-30T13:19:50.050", "metrics": {}, "published": "2026-08-15T06:22:07.403", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/268869794170af37727816ad02051808adb9c9c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5a799714e8ca0bce9ea40694f49914cf1adbbaa9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c7e3755abf663f033de24f917b77685e9543045"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/815515ec68f527ca755cb1e2c1ff9148f6b3ea56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/acd34d24342a28794e706ce8191ca6c3114a38ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df122c593735aa5e1c97457767aa10ed8fa972e0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net/mlx5e: Fix publication race for priv->channel_stats[]", "id": "2516294", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516294"}, "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-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5e: Fix publication race for priv->channel_stats[]\nmlx5e_channel_stats_alloc() publishes a new entry to\npriv->channel_stats[] and then increments priv->stats_nch as a\npublication token, but neither store carries any memory barrier:\npriv->channel_stats[ix] = kvzalloc_node(...);\nif (!priv->channel_stats[ix])\nreturn -ENOMEM;\npriv->stats_nch++;\nConcurrent readers compute the loop bound from priv->stats_nch and\nthen dereference priv->channel_stats[i] using plain accesses, e.g.\nfor (i = 0; i < priv->stats_nch; i++) {\nstruct mlx5e_channel_stats *cs = priv->channel_stats[i];\n... cs->rq.packets ...\n}\nOn weakly-ordered architectures (ARM, PowerPC, RISC-V) the writes to\nchannel_stats[ix] and stats_nch may become visible to other CPUs out\nof program order. A reader can observe stats_nch == N while still\nseeing channel_stats[N-1] == NULL, leading to a NULL pointer\ndereference in the channel_stats loop.\nThis has been observed in production on BlueField-3 DPUs (arm64),\nwhere ovs-vswitchd queries netdev statistics over netlink during NIC\nbringup, racing mlx5e_open_channel() -> mlx5e_channel_stats_alloc()\non another CPU:\nUnable to handle kernel NULL pointer dereference at virtual address 0x840\nHardware name: BlueField-3 DPU\npc : mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\nCall trace:\nmlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]\ndev_get_stats+0x50/0xc0\novs_vport_get_stats+0x38/0xac [openvswitch]\novs_vport_cmd_fill_info+0x194/0x290 [openvswitch]\novs_vport_cmd_get+0xbc/0x10c [openvswitch]\ngenl_family_rcv_msg_doit+0xd0/0x160\ngenl_rcv_msg+0xec/0x1f0\nnetlink_rcv_skb+0x64/0x130\ngenl_rcv+0x40/0x60\nnetlink_unicast+0x2fc/0x370\nnetlink_sendmsg+0x1dc/0x454\n...\n__arm64_sys_sendmsg+0x2c/0x40\nAdd mlx5e_stats_nch_write() and mlx5e_stats_nch_read() helpers in en.h\nthat wrap the smp_store_release()/smp_load_acquire() pair on stats_nch.\nThe release/acquire pair establishes the contract:\nstats_nch == N => channel_stats[0..N-1] are visible and non-NULL.\nPublish the stats_nch increment via mlx5e_stats_nch_write() in the\nwriter (mlx5e_channel_stats_alloc()), and read stats_nch via\nmlx5e_stats_nch_read() in all readers: mlx5e RX/TX queue stats,\nmlx5e_get_base_stats(), ethtool channels stats, IPoIB stats, the\nsw_stats fold and the HV VHCA stats agent.", "A flaw was found in the Linux kernel's `net/mlx5e` component. A local attacker could exploit a race condition during the publication of channel statistics. On weakly-ordered architectures, this could lead to a null pointer dereference, causing a system crash and a denial of service."], "name": "CVE-2026-72341", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72341\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72341\nhttps://lore.kernel.org/linux-cve-announce/2026081510-CVE-2026-72341-4b02@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa691d0c9c0812b9045f3a9420862e47b3b92518,5c7e3755abf663f033de24f917b77685e9543045)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa691d0c9c0812b9045f3a9420862e47b3b92518,815515ec68f527ca755cb1e2c1ff9148f6b3ea56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fa691d0c9c0812b9045f3a9420862e47b3b92518,5a799714e8ca0bce9ea40694f49914cf1adbbaa9)"}}], "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": "5.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-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": "2026-08-15T18:45:03.372879+00:00", "updated": "2026-08-22T06:30:04.531230+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}