CVE-2023-53344
published 2025-09-17CVE-2023-53344: In the Linux kernel, the following vulnerability has been resolved: can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write Syzkaller reported the…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.18%
8.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Syzkaller reported the following issue:
BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline]
BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600
aio_rw_done fs/aio.c:1520 [inline]
aio_write+0x899/0x950 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+0x11d/0x3b0 mm/slab_common.c:981
kmalloc_array include/linux/slab.h:636 [inline]
bcm_tx_setup+0x80e/0x29d0 net/can/bcm.c:930
bcm_sendmsg+0x3a2/0xce0 net/can/bcm.c:1351
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
sock_write_iter+0x495/0x5e0 net/socket.c:1108
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
CPU: 1 PID: 5034 Comm: syz-executor350 Not tainted 6.2.0-rc6-syzkaller-80422-geda666ff2276 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
We can follow the call chain and find that 'bcm_tx_setup' function
calls 'memcpy_from_msg' to copy some content to the newly allocated
frame of 'op->frames'. After that the 'len' field of copied structure
being
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.25-1 (bookworm) | linux 6.1.25-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < 3fa0f1e0e31b1b73cdf59d4c36c7242e6ef821be | 3fa0f1e0e31b1b73cdf59d4c36c7242e6ef821be |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < 618b15d09fed6126356101543451d49860db4388 | 618b15d09fed6126356101543451d49860db4388 |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < 78bc7f0ab99458221224d3ab97199c0f8e6861f1 | 78bc7f0ab99458221224d3ab97199c0f8e6861f1 |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < ab2a55907823f0bca56b6d03ea05e4071ba8535f | ab2a55907823f0bca56b6d03ea05e4071ba8535f |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < bf70e0eab64c625da84d9fdf4e84466b79418920 | bf70e0eab64c625da84d9fdf4e84466b79418920 |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < c11dbc7705b3739974ac31a13f4ab81e61a5fb07 | c11dbc7705b3739974ac31a13f4ab81e61a5fb07 |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < 2e6ad51c709fa794e0ce26003c9c9cd944e3383a | 2e6ad51c709fa794e0ce26003c9c9cd944e3383a |
| linux | linux | >= 6f3b911d5f29b98752e5da86a295210c0c4f4e14 < 2b4c99f7d9a57ecd644eda9b1fb0a1072414959f | 2b4c99f7d9a57ecd644eda9b1fb0a1072414959f |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 4.15 < 4.19.280 | 4.19.280 |
| linux | linux_kernel | >= 4.20 < 5.4.240 | 5.4.240 |
| linux | linux_kernel | >= 4.8 < 4.14.312 | 4.14.312 |
| linux | linux_kernel | >= 5.11 < 5.15.106 | 5.15.106 |
| linux | linux_kernel | >= 5.16 < 6.1.23 | 6.1.23 |
| linux | linux_kernel | >= 5.5 < 5.10.177 | 5.10.177 |
| linux | linux_kernel | >= 6.2 < 6.2.10 | 6.2.10 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: Linux Kernel: Denial of Service in CAN BCM due to uninitialized memory read
vendor_redhat·2025-09-17·CVSS 5.5
CVE-2023-53344 [MEDIUM] CWE-390 kernel: Linux Kernel: Denial of Service in CAN BCM due to uninitialized memory read
kernel: Linux Kernel: Denial of Service in CAN BCM due to uninitialized memory read
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Syzkaller reported the following issue:
BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline]
BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600
aio_rw_done fs/aio.c:1520 [inline]
aio_write+0x899/0x950 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_pos
Debian
CVE-2023-53344: linux - In the Linux kernel, the following vulnerability has been resolved: can: bcm: b...
vendor_debian·2023·CVSS 5.5
CVE-2023-53344 [MEDIUM] CVE-2023-53344: linux - In the Linux kernel, the following vulnerability has been resolved: can: bcm: b...
In the Linux kernel, the following vulnerability has been resolved: can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write Syzkaller reported the following issue: ===================================================== BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline] BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600 aio_rw_done fs/aio.c:1520 [inline] aio_write+0x899/0x950 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 [inl
OSV
CVE-2023-53344: In the Linux kernel, the following vulnerability has been resolved: can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write Syzkaller reported t
osv·2025-09-17·CVSS 5.5
CVE-2023-53344 [MEDIUM] CVE-2023-53344: In the Linux kernel, the following vulnerability has been resolved: can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write Syzkaller reported t
In the Linux kernel, the following vulnerability has been resolved: can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write Syzkaller reported the following issue: ===================================================== BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline] BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600 aio_rw_done fs/aio.c:1520 [inline] aio_write+0x899/0x950 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 [inl
GHSA
GHSA-7qp3-gx4r-g85j: In the Linux kernel, the following vulnerability has been resolved:
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Syzkaller reported
ghsa_unreviewed·2025-09-17
CVE-2023-53344 [MEDIUM] CWE-908 GHSA-7qp3-gx4r-g85j: In the Linux kernel, the following vulnerability has been resolved:
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Syzkaller reported
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
Syzkaller reported the following issue:
BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline]
BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600
aio_rw_done fs/aio.c:1520 [inline]
aio_write+0x899/0x950 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]
__kme
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2b4c99f7d9a57ecd644eda9b1fb0a1072414959fhttps://git.kernel.org/stable/c/2e6ad51c709fa794e0ce26003c9c9cd944e3383ahttps://git.kernel.org/stable/c/3fa0f1e0e31b1b73cdf59d4c36c7242e6ef821behttps://git.kernel.org/stable/c/618b15d09fed6126356101543451d49860db4388https://git.kernel.org/stable/c/78bc7f0ab99458221224d3ab97199c0f8e6861f1https://git.kernel.org/stable/c/ab2a55907823f0bca56b6d03ea05e4071ba8535fhttps://git.kernel.org/stable/c/bf70e0eab64c625da84d9fdf4e84466b79418920https://git.kernel.org/stable/c/c11dbc7705b3739974ac31a13f4ab81e61a5fb07
2025-09-17
Published