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CVE-2024-46683— drm/xe: prevent UAF around preempt fence

CVSS 7.8 · High EPSS 0.21% · P12

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987< 10081b0b0ed201f53e24bd92deb2e0f3c3e713d4affected
dd08ebf6c3525a7ea2186e636df064ea47281987< 730b72480e29f63fd644f5fa57c9d46109428953affected
6.8affected
< 6.8unaffected
6.10.8≤ 6.10.*unaffected
6.11≤ *unaffected
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I. Basic Information for CVE-2024-46683

Vulnerability Information
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Vulnerability Title
drm/xe: prevent UAF around preempt fence
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe: prevent UAF around preempt fence The fence lock is part of the queue, therefore in the current design anything locking the fence should then also hold a ref to the queue to prevent the queue from being freed. However, currently it looks like we signal the fence and then drop the queue ref, but if something is waiting on the fence, the waiter is kicked to wake up at some later point, where upon waking up it first grabs the lock before checking the fence state. But if we have already dropped the queue ref, then the lock might already be freed as part of the queue, leading to uaf. To prevent this, move the fence lock into the fence itself so we don't run into lifetime issues. Alternative might be to have device level lock, or only release the queue in the fence release callback, however that might require pushing to another worker to avoid locking issues. References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2454 References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2342 References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2020 (cherry picked from commit 7116c35aacedc38be6d15bd21b2fc936eed0008b)
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 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，该漏洞源于在处理预占用栅栏时未能正确管理内存引用计数，可能导致内存释放后重用问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux dd08ebf6c3525a7ea2186e636df064ea47281987 ~ 10081b0b0ed201f53e24bd92deb2e0f3c3e713d4 -
LinuxLinux 6.8 -

II. Public POCs for CVE-2024-46683

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III. Intelligence Information for CVE-2024-46683

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Patches & Fixes for CVE-2024-46683 (2)

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

CVE-2024-466979.8 CRITICALnfsd: ensure that nfsd4_fattr_args.context is zeroed out
CVE-2024-466959.8 CRITICALselinux,smack: don't bypass permissions check in inode_setsecctx hook
CVE-2024-466969.8 CRITICALnfsd: fix potential UAF in nfsd4_cb_getattr_release
CVE-2024-466909.8 CRITICALnfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease
CVE-2024-466737.8 HIGHscsi: aacraid: Fix double-free on probe failure
CVE-2024-467137.8 HIGHperf/aux: Fix AUX buffer serialization
CVE-2024-467107.8 HIGHdrm/vmwgfx: Prevent unmapping active read buffers
CVE-2024-467097.8 HIGHdrm/vmwgfx: Fix prime with external buffers
CVE-2024-467057.8 HIGHdrm/xe: reset mmio mappings with devm
CVE-2024-466877.8 HIGHbtrfs: fix a use-after-free when hitting errors inside btrfs_submit_chunk()
CVE-2024-466747.8 HIGHusb: dwc3: st: fix probed platform device ref count on probe error path
CVE-2024-466807.8 HIGHBluetooth: btnxpuart: Fix random crash seen while removing driver
CVE-2024-466787.8 HIGHbonding: change ipsec_lock from spin lock to mutex
CVE-2024-46679ethtool: check device is present when getting link settings
CVE-2024-46712drm/vmwgfx: Disable coherent dumb buffers without 3d
CVE-2024-46711mptcp: pm: fix ID 0 endp usage after multiple re-creations
CVE-2024-46675usb: dwc3: core: Prevent USB core invalid event buffer address access
CVE-2024-46708pinctrl: qcom: x1e80100: Fix special pin offsets
CVE-2024-46676nfc: pn533: Add poll mod list filling check
CVE-2024-46707KVM: 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-2024-46683

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