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{"bugzilla": {"description": "kernel: io_uring: fix error pbuf checking", "id": "2303635", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2303635"}, "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:\nio_uring: fix error pbuf checking\nSyz reports a problem, which boils down to NULL vs IS_ERR inconsistent\nerror handling in io_alloc_pbuf_ring().\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nRIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341\nCall Trace:\n<TASK>\nio_put_bl io_uring/kbuf.c:378 [inline]\nio_destroy_buffers+0x14e/0x490 io_uring/kbuf.c:392\nio_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613\nio_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844\nprocess_one_work kernel/workqueue.c:3231 [inline]\nprocess_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\nworker_thread+0x86d/0xd40 kernel/workqueue.c:3390\nkthread+0x2f0/0x390 kernel/kthread.c:389\nret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\nret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244"], "name": "CVE-2024-42254", "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": "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": "2024-08-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42254\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42254\nhttps://lore.kernel.org/linux-cve-announce/2024080819-CVE-2024-42254-7566@gregkh/T"], "threat_severity": "Low"}