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CVE-2023-52787 |
Description: In the Linux kernel, the following vulnerability has been resolved:
blk-mq: make sure active queue usage is held for bio_integrity_prep()
blk_integrity_unregister() can come if queue usage counter isn't held
for one bio with integrity prepared, so this request may be completed with
calling profile->complete_fn, then kernel panic.
Another constraint is that bio_integrity_prep() needs to be called
before bio merge.
Fix the issue by:
- call bio_integrity_prep() with one queue usage counter grabbed reliably
- call bio_integrity_prep() before bio merge
EPSS Score: 0.05%
December 20th, 2024 (4 months ago)
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CVE-2023-52786 |
Description: In the Linux kernel, the following vulnerability has been resolved:
ext4: fix racy may inline data check in dio write
syzbot reports that the following warning from ext4_iomap_begin()
triggers as of the commit referenced below:
if (WARN_ON_ONCE(ext4_has_inline_data(inode)))
return -ERANGE;
This occurs during a dio write, which is never expected to encounter
an inode with inline data. To enforce this behavior,
ext4_dio_write_iter() checks the current inline state of the inode
and clears the MAY_INLINE_DATA state flag to either fall back to
buffered writes, or enforce that any other writers in progress on
the inode are not allowed to create inline data.
The problem is that the check for existing inline data and the state
flag can span a lock cycle. For example, if the ilock is originally
locked shared and subsequently upgraded to exclusive, another writer
may have reacquired the lock and created inline data before the dio
write task acquires the lock and proceeds.
The commit referenced below loosens the lock requirements to allow
some forms of unaligned dio writes to occur under shared lock, but
AFAICT the inline data check was technically already racy for any
dio write that would have involved a lock cycle. Regardless, lift
clearing of the state bit to the same lock critical section that
checks for preexisting inline data on the inode to close the race.
EPSS Score: 0.05%
December 20th, 2024 (4 months ago)
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CVE-2023-52785 |
Description: In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR
If command timeout happens and cq complete IRQ is raised at the same time,
ufshcd_mcq_abort clears lprb->cmd and a NULL pointer deref happens in the
ISR. Error log:
ufshcd_abort: Device abort task at tag 18
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000108
pc : [0xffffffe27ef867ac] scsi_dma_unmap+0xc/0x44
lr : [0xffffffe27f1b898c] ufshcd_release_scsi_cmd+0x24/0x114
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52784 |
Description: In the Linux kernel, the following vulnerability has been resolved:
bonding: stop the device in bond_setup_by_slave()
Commit 9eed321cde22 ("net: lapbether: only support ethernet devices")
has been able to keep syzbot away from net/lapb, until today.
In the following splat [1], the issue is that a lapbether device has
been created on a bonding device without members. Then adding a non
ARPHRD_ETHER member forced the bonding master to change its type.
The fix is to make sure we call dev_close() in bond_setup_by_slave()
so that the potential linked lapbether devices (or any other devices
having assumptions on the physical device) are removed.
A similar bug has been addressed in commit 40baec225765
("bonding: fix panic on non-ARPHRD_ETHER enslave failure")
[1]
skbuff: skb_under_panic: text:ffff800089508810 len:44 put:40 head:ffff0000c78e7c00 data:ffff0000c78e7bea tail:0x16 end:0x140 dev:bond0
kernel BUG at net/core/skbuff.c:192 !
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6007 Comm: syz-executor383 Not tainted 6.6.0-rc3-syzkaller-gbf6547d8715b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : skb_panic net/core/skbuff.c:188 [inline]
pc : skb_under_panic+0x13c/0x140 net/core/skbuff.c:202
lr : skb_panic net/core/skbuff.c:188 [inline]
lr : skb_under_panic+0x13c/0x140 net/core/skbuff.c:202
sp : ffff800096a06aa0
x29: ...
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52783 |
Description: In the Linux kernel, the following vulnerability has been resolved:
net: wangxun: fix kernel panic due to null pointer
When the device uses a custom subsystem vendor ID, the function
wx_sw_init() returns before the memory of 'wx->mac_table' is allocated.
The null pointer will causes the kernel panic.
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52782 |
Description: In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Track xmit submission to PTP WQ after populating metadata map
Ensure the skb is available in metadata mapping to skbs before tracking the
metadata index for detecting undelivered CQEs. If the metadata index is put
in the tracking list before putting the skb in the map, the metadata index
might be used for detecting undelivered CQEs before the relevant skb is
available in the map, which can lead to a null-ptr-deref.
Log:
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 PID: 1243 Comm: kworker/0:2 Not tainted 6.6.0-rc4+ #108
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Workqueue: events mlx5e_rx_dim_work [mlx5_core]
RIP: 0010:mlx5e_ptp_napi_poll+0x9a4/0x2290 [mlx5_core]
Code: 8c 24 38 cc ff ff 4c 8d 3c c1 4c 89 f9 48 c1 e9 03 42 80 3c 31 00 0f 85 97 0f 00 00 4d 8b 3f 49 8d 7f 28 48 89 f9 48 c1 e9 03 <42> 80 3c 31 00 0f 85 8b 0f 00 00 49 8b 47 28 48 85 c0 0f 84 05 07
RSP: 0018:ffff8884d3c09c88 EFLAGS: 00010206
RAX: 0000000000000069 RBX: ffff8881160349d8 RCX: 0000000000000005
RDX: ffffed10218f48cf RSI: 0000000000000004 RDI: 0000000000000028
RBP: ffff888122707700 R08: 0000000000000001 R09: ffffed109a781383
R10: 0000000000000003 R11: 0000000000000003 R12: f...
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52781 |
Description: In the Linux kernel, the following vulnerability has been resolved:
usb: config: fix iteration issue in 'usb_get_bos_descriptor()'
The BOS descriptor defines a root descriptor and is the base descriptor for
accessing a family of related descriptors.
Function 'usb_get_bos_descriptor()' encounters an iteration issue when
skipping the 'USB_DT_DEVICE_CAPABILITY' descriptor type. This results in
the same descriptor being read repeatedly.
To address this issue, a 'goto' statement is introduced to ensure that the
pointer and the amount read is updated correctly. This ensures that the
function iterates to the next descriptor instead of reading the same
descriptor repeatedly.
EPSS Score: 0.05%
December 20th, 2024 (4 months ago)
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CVE-2023-52780 |
Description: In the Linux kernel, the following vulnerability has been resolved:
net: mvneta: fix calls to page_pool_get_stats
Calling page_pool_get_stats in the mvneta driver without checks
leads to kernel crashes.
First the page pool is only available if the bm is not used.
The page pool is also not allocated when the port is stopped.
It can also be not allocated in case of errors.
The current implementation leads to the following crash calling
ethstats on a port that is down or when calling it at the wrong moment:
ble to handle kernel NULL pointer dereference at virtual address 00000070
[00000070] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Hardware name: Marvell Armada 380/385 (Device Tree)
PC is at page_pool_get_stats+0x18/0x1cc
LR is at mvneta_ethtool_get_stats+0xa0/0xe0 [mvneta]
pc : [] lr : [] psr: a0000013
sp : f1439d48 ip : f1439dc0 fp : 0000001d
r10: 00000100 r9 : c4816b80 r8 : f0d75150
r7 : bf0b400c r6 : c238f000 r5 : 00000000 r4 : f1439d68
r3 : c2091040 r2 : ffffffd8 r1 : f1439d68 r0 : 00000000
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: 066b004a DAC: 00000051
Register r0 information: NULL pointer
Register r1 information: 2-page vmalloc region starting at 0xf1438000 allocated at kernel_clone+0x9c/0x390
Register r2 information: non-paged memory
Register r3 information: slab kmalloc-2k start c2091000 pointer offset 64 size 2048
Register r4 information: 2-page vmalloc region starting at 0xf1438000 all...
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52779 |
Description: In the Linux kernel, the following vulnerability has been resolved:
fs: Pass AT_GETATTR_NOSEC flag to getattr interface function
When vfs_getattr_nosec() calls a filesystem's getattr interface function
then the 'nosec' should propagate into this function so that
vfs_getattr_nosec() can again be called from the filesystem's gettattr
rather than vfs_getattr(). The latter would add unnecessary security
checks that the initial vfs_getattr_nosec() call wanted to avoid.
Therefore, introduce the getattr flag GETATTR_NOSEC and allow to pass
with the new getattr_flags parameter to the getattr interface function.
In overlayfs and ecryptfs use this flag to determine which one of the
two functions to call.
In a recent code change introduced to IMA vfs_getattr_nosec() ended up
calling vfs_getattr() in overlayfs, which in turn called
security_inode_getattr() on an exiting process that did not have
current->fs set anymore, which then caused a kernel NULL pointer
dereference. With this change the call to security_inode_getattr() can
be avoided, thus avoiding the NULL pointer dereference.
EPSS Score: 0.04%
December 20th, 2024 (4 months ago)
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CVE-2023-52778 |
Description: In the Linux kernel, the following vulnerability has been resolved:
mptcp: deal with large GSO size
After the blamed commit below, the TCP sockets (and the MPTCP subflows)
can build egress packets larger than 64K. That exceeds the maximum DSS
data size, the length being misrepresent on the wire and the stream being
corrupted, as later observed on the receiver:
WARNING: CPU: 0 PID: 9696 at net/mptcp/protocol.c:705 __mptcp_move_skbs_from_subflow+0x2604/0x26e0
CPU: 0 PID: 9696 Comm: syz-executor.7 Not tainted 6.6.0-rc5-gcd8bdf563d46 #45
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'.
RIP: 0010:__mptcp_move_skbs_from_subflow+0x2604/0x26e0 net/mptcp/protocol.c:705
RSP: 0018:ffffc90000006e80 EFLAGS: 00010246
RAX: ffffffff83e9f674 RBX: ffff88802f45d870 RCX: ffff888102ad0000
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'.
RDX: 0000000080000303 RSI: 0000000000013908 RDI: 0000000000003908
RBP: ffffc90000007110 R08: ffffffff83e9e078 R09: 1ffff1100e548c8a
R10: dffffc0000000000 R11: ffffed100e548c8b R12: 0000000000013908
R13: dffffc0000000000 R14: 0000000000003908 R15: 000000000031cf29
FS: 00007f239c47e700(0000) GS:ffff88811b200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f239c45cd78 CR3: 000000006a66c006 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000...
EPSS Score: 0.05%
December 20th, 2024 (4 months ago)
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