From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
syzbot+f59100a0428e6ded9443@syzkaller.appspotmail.com,
Karthik Alapati <mail@karthek.com>, Jiri Kosina <jkosina@suse.cz>
Subject: [PATCH 5.10 12/37] HID: hidraw: fix memory leak in hidraw_release()
Date: Fri, 2 Sep 2022 14:19:34 +0200 [thread overview]
Message-ID: <20220902121359.551771738@linuxfoundation.org> (raw)
In-Reply-To: <20220902121359.177846782@linuxfoundation.org>
From: Karthik Alapati <mail@karthek.com>
commit a5623a203cffe2d2b84d2f6c989d9017db1856af upstream.
Free the buffered reports before deleting the list entry.
BUG: memory leak
unreferenced object 0xffff88810e72f180 (size 32):
comm "softirq", pid 0, jiffies 4294945143 (age 16.080s)
hex dump (first 32 bytes):
64 f3 c6 6a d1 88 07 04 00 00 00 00 00 00 00 00 d..j............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff814ac6c3>] kmemdup+0x23/0x50 mm/util.c:128
[<ffffffff8357c1d2>] kmemdup include/linux/fortify-string.h:440 [inline]
[<ffffffff8357c1d2>] hidraw_report_event+0xa2/0x150 drivers/hid/hidraw.c:521
[<ffffffff8356ddad>] hid_report_raw_event+0x27d/0x740 drivers/hid/hid-core.c:1992
[<ffffffff8356e41e>] hid_input_report+0x1ae/0x270 drivers/hid/hid-core.c:2065
[<ffffffff835f0d3f>] hid_irq_in+0x1ff/0x250 drivers/hid/usbhid/hid-core.c:284
[<ffffffff82d3c7f9>] __usb_hcd_giveback_urb+0xf9/0x230 drivers/usb/core/hcd.c:1670
[<ffffffff82d3cc26>] usb_hcd_giveback_urb+0x1b6/0x1d0 drivers/usb/core/hcd.c:1747
[<ffffffff82ef1e14>] dummy_timer+0x8e4/0x14c0 drivers/usb/gadget/udc/dummy_hcd.c:1988
[<ffffffff812f50a8>] call_timer_fn+0x38/0x200 kernel/time/timer.c:1474
[<ffffffff812f5586>] expire_timers kernel/time/timer.c:1519 [inline]
[<ffffffff812f5586>] __run_timers.part.0+0x316/0x430 kernel/time/timer.c:1790
[<ffffffff812f56e4>] __run_timers kernel/time/timer.c:1768 [inline]
[<ffffffff812f56e4>] run_timer_softirq+0x44/0x90 kernel/time/timer.c:1803
[<ffffffff848000e6>] __do_softirq+0xe6/0x2ea kernel/softirq.c:571
[<ffffffff81246db0>] invoke_softirq kernel/softirq.c:445 [inline]
[<ffffffff81246db0>] __irq_exit_rcu kernel/softirq.c:650 [inline]
[<ffffffff81246db0>] irq_exit_rcu+0xc0/0x110 kernel/softirq.c:662
[<ffffffff84574f02>] sysvec_apic_timer_interrupt+0xa2/0xd0 arch/x86/kernel/apic/apic.c:1106
[<ffffffff84600c8b>] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
[<ffffffff8458a070>] native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
[<ffffffff8458a070>] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
[<ffffffff8458a070>] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
[<ffffffff8458a070>] acpi_idle_do_entry+0xc0/0xd0 drivers/acpi/processor_idle.c:554
Link: https://syzkaller.appspot.com/bug?id=19a04b43c75ed1092021010419b5e560a8172c4f
Reported-by: syzbot+f59100a0428e6ded9443@syzkaller.appspotmail.com
Signed-off-by: Karthik Alapati <mail@karthek.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hid/hidraw.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -346,10 +346,13 @@ static int hidraw_release(struct inode *
unsigned int minor = iminor(inode);
struct hidraw_list *list = file->private_data;
unsigned long flags;
+ int i;
mutex_lock(&minors_lock);
spin_lock_irqsave(&hidraw_table[minor]->list_lock, flags);
+ for (i = list->tail; i < list->head; i++)
+ kfree(list->buffer[i].value);
list_del(&list->node);
spin_unlock_irqrestore(&hidraw_table[minor]->list_lock, flags);
kfree(list);
next prev parent reply other threads:[~2022-09-02 13:03 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 12:19 [PATCH 5.10 00/37] 5.10.141-rc1 review Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 01/37] mm: Force TLB flush for PFNMAP mappings before unlink_file_vma() Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 02/37] x86/nospec: Unwreck the RSB stuffing Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 03/37] x86/nospec: Fix i386 " Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 04/37] crypto: lib - remove unneeded selection of XOR_BLOCKS Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 05/37] s390/mm: do not trigger write fault when vma does not allow VM_WRITE Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 06/37] kbuild: Fix include path in scripts/Makefile.modpost Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 07/37] Bluetooth: L2CAP: Fix build errors in some archs Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 08/37] Revert "PCI/portdrv: Dont disable AER reporting in get_port_device_capability()" Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 09/37] HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 10/37] udmabuf: Set the DMA mask for the udmabuf device (v2) Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 11/37] media: pvrusb2: fix memory leak in pvr_probe Greg Kroah-Hartman
2022-09-02 12:19 ` Greg Kroah-Hartman [this message]
2022-09-02 12:19 ` [PATCH 5.10 13/37] net: fix refcount bug in sk_psock_get (2) Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 14/37] fbdev: fb_pm2fb: Avoid potential divide by zero error Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 15/37] ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 16/37] bpf: Dont redirect packets with invalid pkt_len Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 17/37] mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 18/37] mmc: mtk-sd: Clear interrupts when cqe off/disable Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 19/37] drm/amd/display: Avoid MPC infinite loop Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 20/37] drm/amd/display: For stereo keep "FLIP_ANY_FRAME" Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 21/37] drm/amd/display: clear optc underflow before turn off odm clock Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 22/37] neigh: fix possible DoS due to net iface start/stop loop Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 23/37] s390/hypfs: avoid error message under KVM Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 24/37] drm/amd/pm: add missing ->fini_microcode interface for Sienna Cichlid Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 25/37] drm/amd/display: Fix pixel clock programming Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 26/37] drm/amdgpu: Increase tlb flush timeout for sriov Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 27/37] netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 28/37] lib/vdso: Mark do_hres_timens() and do_coarse_timens() __always_inline() Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 29/37] kprobes: dont call disarm_kprobe() for disabled kprobes Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 30/37] io_uring: disable polling pollfree files Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 31/37] xfs: remove infinite loop when reserving free block pool Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 32/37] xfs: always succeed at setting the reserve pool size Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 33/37] xfs: fix overfilling of reserve pool Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 34/37] xfs: fix soft lockup via spinning in filestream ag selection loop Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 35/37] xfs: revert "xfs: actually bump warning counts when we send warnings" Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 36/37] net/af_packet: check len when min_header_len equals to 0 Greg Kroah-Hartman
2022-09-02 12:19 ` [PATCH 5.10 37/37] net: neigh: dont call kfree_skb() under spin_lock_irqsave() Greg Kroah-Hartman
2022-09-02 16:36 ` [PATCH 5.10 00/37] 5.10.141-rc1 review Jon Hunter
2022-09-02 17:36 ` Florian Fainelli
2022-09-02 22:16 ` Shuah Khan
2022-09-03 0:36 ` Guenter Roeck
2022-09-03 3:15 ` Rudi Heitbaum
2022-09-03 6:06 ` Naresh Kamboju
2022-09-03 10:43 ` Sudip Mukherjee
2022-09-05 7:44 ` Pavel Machek
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