CVE-2024-50249— ACPI: CPPC: Make rmw_lock a raw_spin_lock
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I. Basic Information for CVE-2024-50249
Vulnerability Information
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Vulnerability Title
ACPI: CPPC: Make rmw_lock a raw_spin_lock
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Make rmw_lock a raw_spin_lock The following BUG was triggered: ============================= [ BUG: Invalid wait context ] 6.12.0-rc2-XXX #406 Not tainted ----------------------------- kworker/1:1/62 is trying to lock: ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370 other info that might help us debug this: context-{5:5} 2 locks held by kworker/1:1/62: #0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50 #1: ffffff880154e238 (&sg_policy->update_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280 stack backtrace: CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406 Workqueue: 0x0 (events) Call trace: dump_backtrace+0xa4/0x130 show_stack+0x20/0x38 dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x28 __lock_acquire+0x480/0x1ad8 lock_acquire+0x114/0x310 _raw_spin_lock+0x50/0x70 cpc_write+0xcc/0x370 cppc_set_perf+0xa0/0x3a8 cppc_cpufreq_fast_switch+0x40/0xc0 cpufreq_driver_fast_switch+0x4c/0x218 sugov_update_shared+0x234/0x280 update_load_avg+0x6ec/0x7b8 dequeue_entities+0x108/0x830 dequeue_task_fair+0x58/0x408 __schedule+0x4f0/0x1070 schedule+0x54/0x130 worker_thread+0xc0/0x2e8 kthread+0x130/0x148 ret_from_fork+0x10/0x20 sugov_update_shared() locks a raw_spinlock while cpc_write() locks a spinlock. To have a correct wait-type order, update rmw_lock to a raw spinlock and ensure that interrupts will be disabled on the CPU holding it. [ rjw: Changelog edits ]
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，该漏洞源于存在rmw_lock类型问题。
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-2024-50249
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Same Patch Batch · Linux · 2024-11-09 · 49 CVEs total
| CVE-2024-50248 | ntfs3: Add bounds checking to mi_enum_attr() | |
| CVE-2024-50252 | mlxsw: spectrum_ipip: Fix memory leak when changing remote IPv6 address | |
| CVE-2024-50254 | bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() | |
| CVE-2024-50258 | net: fix crash when config small gso_max_size/gso_ipv4_max_size | |
| CVE-2024-50259 | netdevsim: Add trailing zero to terminate the string in nsim_nexthop_bucket_activity_write | |
| CVE-2024-50260 | sock_map: fix a NULL pointer dereference in sock_map_link_update_prog() | |
| CVE-2024-50261 | macsec: Fix use-after-free while sending the offloading packet | |
| CVE-2024-50262 | bpf: Fix out-of-bounds write in trie_get_next_key() | |
| CVE-2024-50257 | netfilter: Fix use-after-free in get_info() | |
| CVE-2024-50250 | fsdax: dax_unshare_iter needs to copy entire blocks | |
| CVE-2024-50251 | netfilter: nft_payload: sanitize offset and length before calling skb_checksum() | |
| CVE-2024-50247 | fs/ntfs3: Check if more than chunk-size bytes are written | |
| CVE-2024-50246 | fs/ntfs3: Add rough attr alloc_size check | |
| CVE-2024-50244 | fs/ntfs3: Additional check in ni_clear() | |
| CVE-2024-50245 | fs/ntfs3: Fix possible deadlock in mi_read | |
| CVE-2024-50243 | fs/ntfs3: Fix general protection fault in run_is_mapped_full | |
| CVE-2024-50242 | fs/ntfs3: Additional check in ntfs_file_release | |
| CVE-2024-50241 | NFSD: Initialize struct nfsd4_copy earlier | |
| CVE-2024-50240 | phy: qcom: qmp-usb: fix NULL-deref on runtime suspend | |
| CVE-2024-50239 | phy: qcom: qmp-usb-legacy: fix NULL-deref on runtime suspend |
Showing top 20 of 49 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-2024-50249
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