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CVE-2024-46696— nfsd: fix potential UAF in nfsd4_cb_getattr_release

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存在资源管理错误漏洞，该漏洞源于在处理nfsd4_cb_getattr_release时未能正确处理已删除的委托，可能导致内存释放后重用。

CVSS 9.8 · Critical EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux c5967721e1063648b0506481585ba7e2e49a075e< e0b66698a5ae41078f7490e8b3527013f5fccd6c affected
c5967721e1063648b0506481585ba7e2e49a075e< 1116e0e372eb16dd907ec571ce5d4af325c55c10 affected
6.9 affected
< 6.9 unaffected
6.10.8≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-46696

Vulnerability Information
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Vulnerability Title
nfsd: fix potential UAF in nfsd4_cb_getattr_release
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix potential UAF in nfsd4_cb_getattr_release Once we drop the delegation reference, the fields embedded in it are no longer safe to access. Do that last.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 资源管理错误漏洞
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存在资源管理错误漏洞，该漏洞源于在处理nfsd4_cb_getattr_release时未能正确处理已删除的委托，可能导致内存释放后重用。
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 c5967721e1063648b0506481585ba7e2e49a075e ~ e0b66698a5ae41078f7490e8b3527013f5fccd6c -
Linux Linux 6.9 -

II. Public POCs for CVE-2024-46696

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III. Intelligence Information for CVE-2024-46696

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Patches & Fixes for CVE-2024-46696 (1)

Same Patch Batch · Linux · 2024-09-13 · 40 CVEs total

CVE-2024-46697 9.8 CRITICAL nfsd: ensure that nfsd4_fattr_args.context is zeroed out
CVE-2024-46695 9.8 CRITICAL selinux,smack: don't bypass permissions check in inode_setsecctx hook
CVE-2024-46690 9.8 CRITICAL nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease
CVE-2024-46673 7.8 HIGH scsi: aacraid: Fix double-free on probe failure
CVE-2024-46713 7.8 HIGH perf/aux: Fix AUX buffer serialization
CVE-2024-46710 7.8 HIGH drm/vmwgfx: Prevent unmapping active read buffers
CVE-2024-46709 7.8 HIGH drm/vmwgfx: Fix prime with external buffers
CVE-2024-46705 7.8 HIGH drm/xe: reset mmio mappings with devm
CVE-2024-46687 7.8 HIGH btrfs: fix a use-after-free when hitting errors inside btrfs_submit_chunk()
CVE-2024-46683 7.8 HIGH drm/xe: prevent UAF around preempt fence
CVE-2024-46674 7.8 HIGH usb: dwc3: st: fix probed platform device ref count on probe error path
CVE-2024-46680 7.8 HIGH Bluetooth: btnxpuart: Fix random crash seen while removing driver
CVE-2024-46678 7.8 HIGH bonding: change ipsec_lock from spin lock to mutex
CVE-2024-46679 ethtool: check device is present when getting link settings
CVE-2024-46712 drm/vmwgfx: Disable coherent dumb buffers without 3d
CVE-2024-46711 mptcp: pm: fix ID 0 endp usage after multiple re-creations
CVE-2024-46675 usb: dwc3: core: Prevent USB core invalid event buffer address access
CVE-2024-46708 pinctrl: qcom: x1e80100: Fix special pin offsets
CVE-2024-46676 nfc: pn533: Add poll mod list filling check
CVE-2024-46707 KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-46696

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