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CVE-2024-53160— rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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__mod_timer与kvfree_call_rcu之间的数据竞争问题。

AI Predicted 6.5 Difficulty: Hard EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 8fc5494ad5face62747a3937db66b00db1e5d80b< 967a0e61910825d1fad009d836a6cb41f7402395 affected
8fc5494ad5face62747a3937db66b00db1e5d80b< 05b8ea1f16667f07c8e5843fb4bde3e49d49ead8 affected
8fc5494ad5face62747a3937db66b00db1e5d80b< 5ced426d97ce84299ecfcc7bd8b38f975fd11089 affected
8fc5494ad5face62747a3937db66b00db1e5d80b< a23da88c6c80e41e0503e0b481a22c9eea63f263 affected
6.3 affected
< 6.3 unaffected
6.6.64≤ 6.6.* unaffected
6.11.11≤ 6.11.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-53160

Vulnerability Information
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Vulnerability Title
rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu KCSAN reports a data race when access the krcp->monitor_work.timer.expires variable in the schedule_delayed_monitor_work() function: <snip> BUG: KCSAN: data-race in __mod_timer / kvfree_call_rcu read to 0xffff888237d1cce8 of 8 bytes by task 10149 on cpu 1: schedule_delayed_monitor_work kernel/rcu/tree.c:3520 [inline] kvfree_call_rcu+0x3b8/0x510 kernel/rcu/tree.c:3839 trie_update_elem+0x47c/0x620 kernel/bpf/lpm_trie.c:441 bpf_map_update_value+0x324/0x350 kernel/bpf/syscall.c:203 generic_map_update_batch+0x401/0x520 kernel/bpf/syscall.c:1849 bpf_map_do_batch+0x28c/0x3f0 kernel/bpf/syscall.c:5143 __sys_bpf+0x2e5/0x7a0 __do_sys_bpf kernel/bpf/syscall.c:5741 [inline] __se_sys_bpf kernel/bpf/syscall.c:5739 [inline] __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5739 x64_sys_call+0x2625/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f write to 0xffff888237d1cce8 of 8 bytes by task 56 on cpu 0: __mod_timer+0x578/0x7f0 kernel/time/timer.c:1173 add_timer_global+0x51/0x70 kernel/time/timer.c:1330 __queue_delayed_work+0x127/0x1a0 kernel/workqueue.c:2523 queue_delayed_work_on+0xdf/0x190 kernel/workqueue.c:2552 queue_delayed_work include/linux/workqueue.h:677 [inline] schedule_delayed_monitor_work kernel/rcu/tree.c:3525 [inline] kfree_rcu_monitor+0x5e8/0x660 kernel/rcu/tree.c:3643 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 56 Comm: kworker/u8:4 Not tainted 6.12.0-rc2-syzkaller-00050-g5b7c893ed5ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound kfree_rcu_monitor <snip> kfree_rcu_monitor() rearms the work if a "krcp" has to be still offloaded and this is done without holding krcp->lock, whereas the kvfree_call_rcu() holds it. Fix it by acquiring the "krcp->lock" for kfree_rcu_monitor() so both functions do not race anymore.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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__mod_timer与kvfree_call_rcu之间的数据竞争问题。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8fc5494ad5face62747a3937db66b00db1e5d80b ~ 967a0e61910825d1fad009d836a6cb41f7402395 -
Linux Linux 6.3 -

II. Public POCs for CVE-2024-53160

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III. Intelligence Information for CVE-2024-53160

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Patches & Fixes for CVE-2024-53160 (4)

Same Patch Batch · Linux · 2024-12-24 · 20 CVEs total

CVE-2024-53146 9.1 CRITICAL NFSD: Prevent a potential integer overflow
CVE-2024-53147 7.8 HIGH exfat: fix out-of-bounds access of directory entries
CVE-2024-53148 7.8 HIGH comedi: Flush partial mappings in error case
CVE-2024-53151 7.5 HIGH svcrdma: Address an integer overflow
CVE-2024-53152 PCI: tegra194: Move controller cleanups to pex_ep_event_pex_rst_deassert()
CVE-2024-53163 crypto: qat/qat_420xx - fix off by one in uof_get_name()
CVE-2024-53162 crypto: qat/qat_4xxx - fix off by one in uof_get_name()
CVE-2024-53161 EDAC/bluefield: Fix potential integer overflow
CVE-2024-53158 soc: qcom: geni-se: fix array underflow in geni_se_clk_tbl_get()
CVE-2024-53157 firmware: arm_scpi: Check the DVFS OPP count returned by the firmware
CVE-2024-53156 wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service()
CVE-2024-53155 ocfs2: fix uninitialized value in ocfs2_file_read_iter()
CVE-2024-53154 clk: clk-apple-nco: Add NULL check in applnco_probe
CVE-2024-53153 PCI: qcom-ep: Move controller cleanups to qcom_pcie_perst_deassert()
CVE-2024-53240 xen/netfront: fix crash when removing device
CVE-2024-53150 ALSA: usb-audio: Fix out of bounds reads when finding clock sources
CVE-2024-53149 usb: typec: ucsi: glink: fix off-by-one in connector_status
CVE-2024-53145 um: Fix potential integer overflow during physmem setup
CVE-2024-53241 x86/xen: don't do PV iret hypercall through hypercall page

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-53160

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