cbcvebase.
CVE-2023-53578
published 2025-10-04

CVE-2023-53578: In the Linux kernel, the following vulnerability has been resolved: net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume() Syzbot reported a bug as…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
4.0th percentile
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume() Syzbot reported a bug as following: BUG: KMSAN: uninit-value in qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230 qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230 qrtr_endpoint_post+0xf85/0x11b0 net/qrtr/af_qrtr.c:519 qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108 call_write_iter include/linux/fs.h:2189 [inline] aio_write+0x63a/0x950 fs/aio.c:1600 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019 __do_sys_io_submit fs/aio.c:2078 [inline] __se_sys_io_submit+0x293/0x770 fs/aio.c:2048 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook mm/slab.h:766 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988 kmalloc_reserve net/core/skbuff.c:492 [inline] __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565 __netdev_alloc_skb+0x120/0x7d0 net/core/skbuff.c:630 qrtr_endpoint_post+0xbd/0x11b0 net/qrtr/af_qrtr.c:446 qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108 call_write_iter include/linux/fs.h:2189 [inline] aio_write+0x63a/0x950 fs/aio.c:1600 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019 __do_sys_io_submit fs/aio.c:2078 [inline] __se_sys_io_submit+0x293/0x770 fs/aio.c:2048 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd It is because that skb->len requires at least sizeof(struct qrtr_ctrl_pkt) in qrtr_tx_resume(). And skb->len equals to size in qrtr_endpoint_post(). But size is less than sizeof(struct qrtr_ctrl_pkt) when qrtr_cb->type equals to QRTR_TYPE_RESUME_TX in qrtr_endpoint_post()

Affected

16 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.25-1 (bookworm)linux 6.1.25-1 (bookworm)
linuxlinux——
linuxlinux>= 5fdeb0d372ab33b4175043a2a4a1730239a217f1 < 3814d211ff13ee35f2d9437439a6c7df585241373814d211ff13ee35f2d9437439a6c7df58524137
linuxlinux>= 5fdeb0d372ab33b4175043a2a4a1730239a217f1 < c6a796ee5a639ffb83c6e5469408cc2ec16cac6ac6a796ee5a639ffb83c6e5469408cc2ec16cac6a
linuxlinux>= 5fdeb0d372ab33b4175043a2a4a1730239a217f1 < bef57c227b52c2bde00fad33556175d36d12cfa0bef57c227b52c2bde00fad33556175d36d12cfa0
linuxlinux>= 5fdeb0d372ab33b4175043a2a4a1730239a217f1 < 8c9ce34a6ff2c544f96ce0b088e8fd3c1b9698c48c9ce34a6ff2c544f96ce0b088e8fd3c1b9698c4
linuxlinux>= 5fdeb0d372ab33b4175043a2a4a1730239a217f1 < 6417070918de3bcdbe0646e7256dae58fd8083ba6417070918de3bcdbe0646e7256dae58fd8083ba
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.25-16.1.25-1
linuxlinux_kernel>= 0 < 6.1.25-16.1.25-1
linuxlinux_kernel>= 0 < 6.1.25-16.1.25-1
linuxlinux_kernel>= 5.11 < 5.15.1085.15.108
linuxlinux_kernel>= 5.16 < 6.1.256.1.25
linuxlinux_kernel>= 5.6 < 5.10.1785.10.178
linuxlinux_kernel>= 6.2 < 6.2.126.2.12

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.