CVE-2024-41023— sched/deadline: Fix task_struct reference leak
Affected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | feff2e65efd8d84cf831668e182b2ce73c604bbb< 7a54d31face626f62de415ebe77b43f76c3ffaf4 | affected |
feff2e65efd8d84cf831668e182b2ce73c604bbb< b58652db66c910c2245f5bee7deca41c12d707b9 | affected | ||
f0e1c1d8ff908a39dd42e723d08f104505dfa601 | affected | ||
184c8ab5342450c4ae6fc5d937f9bb06c620dcf1 | affected | ||
4.19.257< 4.20 | affected | ||
5.4.212< 5.5 | affected | ||
5.10 | affected | ||
< 5.10 | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2024-41023
Vulnerability Information
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Vulnerability Title
sched/deadline: Fix task_struct reference leak
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sched/deadline: Fix task_struct reference leak During the execution of the following stress test with linux-rt: stress-ng --cyclic 30 --timeout 30 --minimize --quiet kmemleak frequently reported a memory leak concerning the task_struct: unreferenced object 0xffff8881305b8000 (size 16136): comm "stress-ng", pid 614, jiffies 4294883961 (age 286.412s) object hex dump (first 32 bytes): 02 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .@.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ debug hex dump (first 16 bytes): 53 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 S............... backtrace: [<00000000046b6790>] dup_task_struct+0x30/0x540 [<00000000c5ca0f0b>] copy_process+0x3d9/0x50e0 [<00000000ced59777>] kernel_clone+0xb0/0x770 [<00000000a50befdc>] __do_sys_clone+0xb6/0xf0 [<000000001dbf2008>] do_syscall_64+0x5d/0xf0 [<00000000552900ff>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 The issue occurs in start_dl_timer(), which increments the task_struct reference count and sets a timer. The timer callback, dl_task_timer, is supposed to decrement the reference count upon expiration. However, if enqueue_task_dl() is called before the timer expires and cancels it, the reference count is not decremented, leading to the leak. This patch fixes the reference leak by ensuring the task_struct reference count is properly decremented when the timer is canceled.
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 start_dl_timer 中增加了 task_struct 的引用计数并设置了定时器，如果 enqueue_task_dl 在定时器到期前被调用并取消了它，引用计数没有减少，导致内存泄漏。
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-2024-41023
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|---|
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Other References for CVE-2024-41023 (1)
Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total
| CVE-2024-41089 | drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_hd_modes | |
| CVE-2024-42068 | bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro() | |
| CVE-2024-42067 | bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro() | |
| CVE-2024-42066 | drm/xe: Fix potential integer overflow in page size calculation | |
| CVE-2024-42065 | drm/xe: Add a NULL check in xe_ttm_stolen_mgr_init | |
| CVE-2024-42063 | bpf: Mark bpf prog stack with kmsan_unposion_memory in interpreter mode | |
| CVE-2024-42064 | drm/amd/display: Skip pipe if the pipe idx not set properly | |
| CVE-2023-52887 | net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_s | |
| CVE-2024-41098 | ata: libata-core: Fix null pointer dereference on error | |
| CVE-2024-41097 | usb: atm: cxacru: fix endpoint checking in cxacru_bind() | |
| CVE-2024-41096 | PCI/MSI: Fix UAF in msi_capability_init | |
| CVE-2024-41095 | drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_ld_modes | |
| CVE-2024-41094 | drm/fbdev-dma: Only set smem_start is enable per module option | |
| CVE-2024-41093 | drm/amdgpu: avoid using null object of framebuffer | |
| CVE-2024-41092 | drm/i915/gt: Fix potential UAF by revoke of fence registers | |
| CVE-2024-41078 | btrfs: qgroup: fix quota root leak after quota disable failure | |
| CVE-2024-41081 | ila: block BH in ila_output() | |
| CVE-2024-41080 | io_uring: fix possible deadlock in io_register_iowq_max_workers() | |
| CVE-2024-41079 | nvmet: always initialize cqe.result | |
| CVE-2024-41076 | NFSv4: Fix memory leak in nfs4_set_security_label |
Showing top 20 of 121 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-41023
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