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{"bugzilla": {"description": "kernel: ksmbd: fix use-after-free by using call_rcu() for oplock_info", "id": "2468218", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468218"}, "csaw": false, "cwe": "CWE-763", "details": ["A flaw was found in ksmbd in the Linux kernel. The `oplock_info` structure is immediately freed using `kfree()` without an RCU (Read-Copy-Update) grace period, even though it can still be accessed by readers. This improper memory deallocation can lead to a use-after-free vulnerability, particularly in the `opinfo_get()` function, where operations are performed on already freed memory. A local attacker could potentially exploit this to cause system instability or a denial of service."], "name": "CVE-2026-43376", "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"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43376\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43376\nhttps://lore.kernel.org/linux-cve-announce/2026050831-CVE-2026-43376-e32d@gregkh/T"]}

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