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CVE-2024-44956— drm/xe/preempt_fence: enlarge the fence critical section

EPSS 0.03% · P10

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987< 458bb83119dfee5d14c677f7846dd9363817006faffected
dd08ebf6c3525a7ea2186e636df064ea47281987< 3cd1585e57908b6efcd967465ef7685f40b2a294affected
6.8affected
< 6.8unaffected
6.10.5≤ 6.10.*unaffected
6.11≤ *unaffected
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I. Basic Information for CVE-2024-44956

Vulnerability Information
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Vulnerability Title
drm/xe/preempt_fence: enlarge the fence critical section
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/preempt_fence: enlarge the fence critical section It is really easy to introduce subtle deadlocks in preempt_fence_work_func() since we operate on single global ordered-wq for signalling our preempt fences behind the scenes, so even though we signal a particular fence, everything in the callback should be in the fence critical section, since blocking in the callback will prevent other published fences from signalling. If we enlarge the fence critical section to cover the entire callback, then lockdep should be able to understand this better, and complain if we grab a sensitive lock like vm->lock, which is also held when waiting on preempt fences.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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drm/xe组件preempt_fence的临界区不足可能导致死锁。
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 ~ 458bb83119dfee5d14c677f7846dd9363817006f -
LinuxLinux 6.8 -

II. Public POCs for CVE-2024-44956

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III. Intelligence Information for CVE-2024-44956

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Same Patch Batch · Linux · 2024-09-04 · 58 CVEs total

CVE-2024-44991tcp: prevent concurrent execution of tcp_sk_exit_batch
CVE-2024-45002rtla/osnoise: Prevent NULL dereference in error handling
CVE-2024-45006xhci: Fix Panther point NULL pointer deref at full-speed re-enumeration
CVE-2024-45004KEYS: trusted: dcp: fix leak of blob encryption key
CVE-2024-45003vfs: Don't evict inode under the inode lru traversing context
CVE-2024-45005KVM: s390: fix validity interception issue when gisa is switched off
CVE-2024-44994iommu: Restore lost return in iommu_report_device_fault()
CVE-2024-44993drm/v3d: Fix out-of-bounds read in `v3d_csd_job_run()`
CVE-2024-44992smb/client: avoid possible NULL dereference in cifs_free_subrequest()
CVE-2024-44990bonding: fix null pointer deref in bond_ipsec_offload_ok
CVE-2024-44995net: hns3: fix a deadlock problem when config TC during resetting
CVE-2024-44989bonding: fix xfrm real_dev null pointer dereference
CVE-2024-44988net: dsa: mv88e6xxx: Fix out-of-bound access
CVE-2024-44987ipv6: prevent UAF in ip6_send_skb()
CVE-2024-44986ipv6: fix possible UAF in ip6_finish_output2()
CVE-2024-44985ipv6: prevent possible UAF in ip6_xmit()
CVE-2024-44983netfilter: flowtable: validate vlan header
CVE-2024-44984bnxt_en: Fix double DMA unmapping for XDP_REDIRECT
CVE-2024-44982drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails
CVE-2024-44981workqueue: Fix UBSAN 'subtraction overflow' error in shift_and_mask()

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-44956

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