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CVE-2024-49976— tracing/timerlat: Drop interface_lock in stop_kthread()

AI Predicted 7.8 Difficulty: Moderate EPSS 0.18% · P8

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinuxb4fdabffae14cca2c80d99bd81f3f27239ac7f5e< a4a05ceffe8fad68b45de38fe2311bda619e76e2affected
4679272d5252720746fd9c5465352cbc5665f230< 09cb44cc3d3df7ade2cebc939d6257a2fa8afc7aaffected
5bfbcd1ee57b607fd29e4645c7f350dd385dd9ad< db8571a9a098086608c11a15856ff585789e67e8affected
5bfbcd1ee57b607fd29e4645c7f350dd385dd9ad< b484a02c9cedf8703eff8f0756f94618004bd165affected
6.6.51< 6.6.55affected
6.10.10< 6.10.14affected
6.11affected
< 6.11unaffected
… +4 more rows
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I. Basic Information for CVE-2024-49976

Vulnerability Information
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Vulnerability Title
tracing/timerlat: Drop interface_lock in stop_kthread()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing/timerlat: Drop interface_lock in stop_kthread() stop_kthread() is the offline callback for "trace/osnoise:online", since commit 5bfbcd1ee57b ("tracing/timerlat: Add interface_lock around clearing of kthread in stop_kthread()"), the following ABBA deadlock scenario is introduced: T1 | T2 [BP] | T3 [AP] osnoise_hotplug_workfn() | work_for_cpu_fn() | cpuhp_thread_fun() | _cpu_down() | osnoise_cpu_die() mutex_lock(&interface_lock) | | stop_kthread() | cpus_write_lock() | mutex_lock(&interface_lock) cpus_read_lock() | cpuhp_kick_ap() | As the interface_lock here in just for protecting the "kthread" field of the osn_var, use xchg() instead to fix this issue. Also use for_each_online_cpu() back in stop_per_cpu_kthreads() as it can take cpu_read_lock() again.
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tracing/timerlat子系统中stop_kthread函数中的死锁问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux b4fdabffae14cca2c80d99bd81f3f27239ac7f5e ~ a4a05ceffe8fad68b45de38fe2311bda619e76e2 -
LinuxLinux 6.11 -

II. Public POCs for CVE-2024-49976

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III. Intelligence Information for CVE-2024-49976

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Patches & Fixes for CVE-2024-49976 (2)

Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total

CVE-2024-500339.8 CRITICALslip: make slhc_remember() more robust against malicious packets
CVE-2024-498559.8 CRITICALnbd: fix race between timeout and normal completion
CVE-2024-476959.8 CRITICALRDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
CVE-2022-489859.8 CRITICALnet: mana: Fix race on per-CQ variable napi work_done
CVE-2022-490039.8 CRITICALnvme: fix SRCU protection of nvme_ns_head list
CVE-2024-500439.8 CRITICALnfsd: fix possible badness in FREE_STATEID
CVE-2024-500479.8 CRITICALsmb: client: fix UAF in async decryption
CVE-2024-500469.8 CRITICALNFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
CVE-2024-499969.4 CRITICALcifs: Fix buffer overflow when parsing NFS reparse points
CVE-2024-476789.4 CRITICALicmp: change the order of rate limits
CVE-2022-489628.8 HIGHnet: hisilicon: Fix potential use-after-free in hisi_femac_rx()
CVE-2024-499508.8 HIGHBluetooth: L2CAP: Fix uaf in l2cap_connect
CVE-2024-499398.8 HIGHwifi: rtw89: avoid to add interface to list twice when SER
CVE-2022-489678.8 HIGHNFC: nci: Bounds check struct nfc_target arrays
CVE-2022-489648.8 HIGHravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2024-500298.8 HIGHBluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-499308.8 HIGHwifi: ath11k: fix array out-of-bound access in SoC stats
CVE-2024-500418.8 HIGHi40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-499368.8 HIGHnet/xen-netback: prevent UAF in xenvif_flush_hash()
CVE-2022-489548.8 HIGHs390/qeth: fix use-after-free in hsci

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-49976

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