CVE-2024-44948— x86/mtrr: Check if fixed MTRRs exist before saving them
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 34f36e6ee5bd7eff8b2adcd9fcaef369f752d82e | affected |
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 06c1de44d378ec5439db17bf476507d68589bfe9 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 450b6b22acdaac67a18eaf5ed498421ffcf10051 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< ca7d00c5656d1791e28369919e3e10febe9c3b16 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 8aa79dfb216b865e96ff890bc4ea71650f9bc8d7 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 8a90d3fc7c24608548d3a750671f9dac21d1a462 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 388f1c954019f253a8383f7eb733f38d541e10b6 | affected | ||
2b1f6278d77c1f2f669346fc2bb48012b5e9495a< 919f18f961c03d6694aa726c514184f2311a4614 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2024-44948
Vulnerability Information
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Vulnerability Title
x86/mtrr: Check if fixed MTRRs exist before saving them
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/mtrr: Check if fixed MTRRs exist before saving them MTRRs have an obsolete fixed variant for fine grained caching control of the 640K-1MB region that uses separate MSRs. This fixed variant has a separate capability bit in the MTRR capability MSR. So far all x86 CPUs which support MTRR have this separate bit set, so it went unnoticed that mtrr_save_state() does not check the capability bit before accessing the fixed MTRR MSRs. Though on a CPU that does not support the fixed MTRR capability this results in a #GP. The #GP itself is harmless because the RDMSR fault is handled gracefully, but results in a WARN_ON(). Add the missing capability check to prevent this.
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x86/mtrr组件存在固定MTRRs存在性检查漏洞。
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
II. Public POCs for CVE-2024-44948
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2024-44948 (5)
Same Patch Batch · Linux · 2024-09-04 · 58 CVEs total
| CVE-2024-44991 | tcp: prevent concurrent execution of tcp_sk_exit_batch | |
| CVE-2024-45002 | rtla/osnoise: Prevent NULL dereference in error handling | |
| CVE-2024-45006 | xhci: Fix Panther point NULL pointer deref at full-speed re-enumeration | |
| CVE-2024-45004 | KEYS: trusted: dcp: fix leak of blob encryption key | |
| CVE-2024-45003 | vfs: Don't evict inode under the inode lru traversing context | |
| CVE-2024-45005 | KVM: s390: fix validity interception issue when gisa is switched off | |
| CVE-2024-44994 | iommu: Restore lost return in iommu_report_device_fault() | |
| CVE-2024-44993 | drm/v3d: Fix out-of-bounds read in `v3d_csd_job_run()` | |
| CVE-2024-44992 | smb/client: avoid possible NULL dereference in cifs_free_subrequest() | |
| CVE-2024-44990 | bonding: fix null pointer deref in bond_ipsec_offload_ok | |
| CVE-2024-44995 | net: hns3: fix a deadlock problem when config TC during resetting | |
| CVE-2024-44989 | bonding: fix xfrm real_dev null pointer dereference | |
| CVE-2024-44988 | net: dsa: mv88e6xxx: Fix out-of-bound access | |
| CVE-2024-44987 | ipv6: prevent UAF in ip6_send_skb() | |
| CVE-2024-44986 | ipv6: fix possible UAF in ip6_finish_output2() | |
| CVE-2024-44985 | ipv6: prevent possible UAF in ip6_xmit() | |
| CVE-2024-44983 | netfilter: flowtable: validate vlan header | |
| CVE-2024-44984 | bnxt_en: Fix double DMA unmapping for XDP_REDIRECT | |
| CVE-2024-44982 | drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails | |
| CVE-2024-44981 | workqueue: Fix UBSAN 'subtraction overflow' error in shift_and_mask() |
Showing top 20 of 58 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
Same vendor: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
V. Comments for CVE-2024-44948
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