CVE-2024-43914— md/raid5: avoid BUG_ON() while continue reshape after reassembling
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I. Basic Information for CVE-2024-43914
Vulnerability Information
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Vulnerability Title
md/raid5: avoid BUG_ON() while continue reshape after reassembling
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: md/raid5: avoid BUG_ON() while continue reshape after reassembling Currently, mdadm support --revert-reshape to abort the reshape while reassembling, as the test 07revert-grow. However, following BUG_ON() can be triggerred by the test: kernel BUG at drivers/md/raid5.c:6278! invalid opcode: 0000 [#1] PREEMPT SMP PTI irq event stamp: 158985 CPU: 6 PID: 891 Comm: md0_reshape Not tainted 6.9.0-03335-g7592a0b0049a #94 RIP: 0010:reshape_request+0x3f1/0xe60 Call Trace: <TASK> raid5_sync_request+0x43d/0x550 md_do_sync+0xb7a/0x2110 md_thread+0x294/0x2b0 kthread+0x147/0x1c0 ret_from_fork+0x59/0x70 ret_from_fork_asm+0x1a/0x30 </TASK> Root cause is that --revert-reshape update the raid_disks from 5 to 4, while reshape position is still set, and after reassembling the array, reshape position will be read from super block, then during reshape the checking of 'writepos' that is caculated by old reshape position will fail. Fix this panic the easy way first, by converting the BUG_ON() to WARN_ON(), and stop the reshape if checkings fail. Noted that mdadm must fix --revert-shape as well, and probably md/raid should enhance metadata validation as well, however this means reassemble will fail and there must be user tools to fix the wrong metadata.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在执行reshape操作时，未能正确处理--revert-reshape参数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-43914
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Same Patch Batch · Linux · 2024-08-26 · 39 CVEs total
| CVE-2024-44934 | net: bridge: mcast: wait for previous gc cycles when removing port | |
| CVE-2024-43908 | drm/amdgpu: Fix the null pointer dereference to ras_manager | |
| CVE-2024-43909 | drm/amdgpu/pm: Fix the null pointer dereference for smu7 | |
| CVE-2024-43910 | bpf: add missing check_func_arg_reg_off() to prevent out-of-bounds memory accesses | |
| CVE-2024-43911 | wifi: mac80211: fix NULL dereference at band check in starting tx ba session | |
| CVE-2024-43912 | wifi: nl80211: disallow setting special AP channel widths | |
| CVE-2024-43913 | nvme: apple: fix device reference counting | |
| CVE-2024-44931 | gpio: prevent potential speculation leaks in gpio_device_get_desc() | |
| CVE-2024-44932 | idpf: fix UAFs when destroying the queues | |
| CVE-2024-44933 | bnxt_en : Fix memory out-of-bounds in bnxt_fill_hw_rss_tbl() | |
| CVE-2024-43907 | drm/amdgpu/pm: Fix the null pointer dereference in apply_state_adjust_rules | |
| CVE-2024-44935 | sctp: Fix null-ptr-deref in reuseport_add_sock(). | |
| CVE-2024-44936 | power: supply: rt5033: Bring back i2c_set_clientdata | |
| CVE-2024-44937 | platform/x86: intel-vbtn: Protect ACPI notify handler against recursion | |
| CVE-2024-44938 | jfs: Fix shift-out-of-bounds in dbDiscardAG | |
| CVE-2024-44939 | jfs: fix null ptr deref in dtInsertEntry | |
| CVE-2024-44940 | fou: remove warn in gue_gro_receive on unsupported protocol | |
| CVE-2024-44941 | f2fs: fix to cover read extent cache access with lock | |
| CVE-2024-44942 | f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC | |
| CVE-2024-43896 | ASoC: cs-amp-lib: Fix NULL pointer crash if efi.get_variable is NULL |
Showing top 20 of 39 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-43914
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