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CVE-2024-41049— filelock: fix potential use-after-free in posix_lock_inode

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，该漏洞源于在使用trace_posix_lock_inode函数时，请求指针被更改指向刚添加到inode列表的锁条目，但在此之前，另一个任务可能已经释放了该锁，导致释放后重用问题。

CVSS 7.8 · High EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 22

VendorProduct Version RangeStatus
Linux Linux 117fb80cd1e63c419c7a221ce070becb4bfc7b6d< 1cbbb3d9475c403ebedc327490c7c2b991398197 affected
a6f4129378ca15f62cbdde09a7d3ccc35adcf49d< 7d4c14f4b511fd4c0dc788084ae59b4656ace58b affected
766e56faddbec2eaf70c9299e1c9ef74d846d32b< 02a8964260756c70b20393ad4006948510ac9967 affected
34bff6d850019e00001129d6de3aa4874c2cf471< 5cb36e35bc10ea334810937990c2b9023dacb1b0 affected
74f6f5912693ce454384eaeec48705646a21c74f< 432b06b69d1d354a171f7499141116536579eb6a affected
74f6f5912693ce454384eaeec48705646a21c74f< 116599f6a26906cf33f67975c59f0692ecf7e9b2 affected
74f6f5912693ce454384eaeec48705646a21c74f< 1b3ec4f7c03d4b07bad70697d7e2f4088d2cfe92 affected
e75396988bb9b3b90e6e8690604d0f566cea403a affected
… +14 more rows
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I. Basic Information for CVE-2024-41049

Vulnerability Information
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Vulnerability Title
filelock: fix potential use-after-free in posix_lock_inode
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: filelock: fix potential use-after-free in posix_lock_inode Light Hsieh reported a KASAN UAF warning in trace_posix_lock_inode(). The request pointer had been changed earlier to point to a lock entry that was added to the inode's list. However, before the tracepoint could fire, another task raced in and freed that lock. Fix this by moving the tracepoint inside the spinlock, which should ensure that this doesn't happen.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于在使用trace_posix_lock_inode函数时，请求指针被更改指向刚添加到inode列表的锁条目，但在此之前，另一个任务可能已经释放了该锁，导致释放后重用问题。
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 117fb80cd1e63c419c7a221ce070becb4bfc7b6d ~ 1cbbb3d9475c403ebedc327490c7c2b991398197 -
Linux Linux 6.6 -

II. Public POCs for CVE-2024-41049

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III. Intelligence Information for CVE-2024-41049

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Patches & Fixes for CVE-2024-41049 (1)

Other References for CVE-2024-41049 (6)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41070 7.8 HIGH KVM: PPC: Book3S HV: Prevent UAF in kvm_spapr_tce_attach_iommu_group()
CVE-2024-41045 7.8 HIGH bpf: Defer work in bpf_timer_cancel_and_free
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41060 7.8 HIGH drm/radeon: check bo_va->bo is non-NULL before using it
CVE-2024-41059 7.8 HIGH hfsplus: fix uninit-value in copy_name
CVE-2024-42075 7.8 HIGH bpf: Fix remap of arena.
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes
CVE-2024-42072 7.8 HIGH bpf: Fix may_goto with negative offset.
CVE-2024-41069 7.8 HIGH ASoC: topology: Fix references to freed memory
CVE-2024-41086 7.8 HIGH bcachefs: Fix sb_field_downgrade validation
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-41049

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