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{"bugzilla": {"description": "kernel: aio: Fix null ptr deref in aio_complete() wakeup", "id": "2281731", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281731"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\naio: Fix null ptr deref in aio_complete() wakeup\nlist_del_init_careful() needs to be the last access to the wait queue\nentry - it effectively unlocks access.\nPreviously, finish_wait() would see the empty list head and skip taking\nthe lock, and then we'd return - but the completion path would still\nattempt to do the wakeup after the task_struct pointer had been\noverwritten.", "A vulnerability was found in the Linux kernel that causes a NULL pointer dereference in the `aio_complete()` function during a wakeup operation. The issue arises because `finish_wait()` may skip locking if it encounters an empty list head. This leads to a NULL pointer dereference when attempting a wakeup after the task structure pointer is overwritten."], "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-2024-35874", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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"}], "public_date": "2024-05-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35874\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35874\nhttps://lore.kernel.org/linux-cve-announce/2024051942-CVE-2024-35874-c494@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate", "upstream_fix": "kernel 6.8.5, kernel 6.9"}