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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map\n\nJust simply reordering the functions mlx5e_ptp_metadata_map_put and\nmlx5e_ptpsq_track_metadata in the mlx5e_txwqe_complete context is not good\nenough since both the compiler and CPU are free to reorder these two\nfunctions. If reordering does occur, the issue that was supposedly fixed by\n7e3f3ba97e6c (\"net/mlx5e: Track xmit submission to PTP WQ after populating\nmetadata map\") will be seen. This will lead to NULL pointer dereferences in\nmlx5e_ptpsq_mark_ts_cqes_undelivered in the NAPI polling context due to the\ntracking list being populated before the metadata map."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: use una barrera de memoria para aplicar PTP WQ. El seguimiento de env\u00edo xmit ocurre despu\u00e9s de completar metadata_map. Simplemente reordenar las funciones mlx5e_ptp_metadata_map_put y mlx5e_ptpsq_track_metadata en el contexto mlx5e_txwqe_complete no es lo suficientemente bueno ya que ambas el compilador y la CPU son libres de reordenar estas dos funciones. Si se produce un reordenamiento, se ver\u00e1 el problema que supuestamente fue solucionado por 7e3f3ba97e6c (\"net/mlx5e: Seguimiento del env\u00edo de xmit a PTP WQ despu\u00e9s de completar el mapa de metadatos\"). Esto dar\u00e1 lugar a desreferencias de puntero NULL en mlx5e_ptpsq_mark_ts_cqes_undelivered en el contexto de sondeo NAPI debido a que la lista de seguimiento se completa antes del mapa de metadatos."}], "id": "CVE-2024-26858", "lastModified": "2024-04-17T12:48:07.510", "metrics": {}, "published": "2024-04-17T11:15:08.840", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:4583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.26.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-17T00:00:00Z"}, {"advisory": "RHSA-2024:4583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.26.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-17T00:00:00Z"}], "bugzilla": {"description": "kernel: net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map", "id": "2275735", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275735"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map\nJust simply reordering the functions mlx5e_ptp_metadata_map_put and\nmlx5e_ptpsq_track_metadata in the mlx5e_txwqe_complete context is not good\nenough since both the compiler and CPU are free to reorder these two\nfunctions. If reordering does occur, the issue that was supposedly fixed by\n7e3f3ba97e6c (\"net/mlx5e: Track xmit submission to PTP WQ after populating\nmetadata map\") will be seen. This will lead to NULL pointer dereferences in\nmlx5e_ptpsq_mark_ts_cqes_undelivered in the NAPI polling context due to the\ntracking list being populated before the metadata map.", "A vulnerability was found in the mlx5e_txwqe_complete() function in the Linux kernel. The CPU or compiler may reorder two of the functions: mlx5e_ptp_metadata_map_put() and mlx5e_ptpsq_track_metadata(), and a situation could arise where metadata tracking occurs before the metadata map is fully populated. This could lead to a NULL pointer dereference which can cause crashes."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-26858", "package_state": [{"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-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26858\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26858\nhttps://lore.kernel.org/linux-cve-announce/2024041725-CVE-2024-26858-34fb@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 6.6.22, kernel 6.7.10, kernel 6.8"}