Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-44948— x86/mtrr: Check if fixed MTRRs exist before saving them

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x86/mtrr组件存在固定MTRRs存在性检查漏洞。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
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
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-44948

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
x86/mtrr: Check if fixed MTRRs exist before saving them
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2b1f6278d77c1f2f669346fc2bb48012b5e9495a ~ 34f36e6ee5bd7eff8b2adcd9fcaef369f752d82e -
Linux Linux 2.6.22 -

II. Public POCs for CVE-2024-44948

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-44948

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-44948 (5)

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

CVE-2024-44984 10.0 CRITICAL bnxt_en: Fix double DMA unmapping for XDP_REDIRECT
CVE-2024-44985 9.8 CRITICAL ipv6: prevent possible UAF in ip6_xmit()
CVE-2024-44970 9.8 CRITICAL net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink
CVE-2024-44998 9.8 CRITICAL atm: idt77252: prevent use after free in dequeue_rx()
CVE-2024-44988 8.8 HIGH net: dsa: mv88e6xxx: Fix out-of-bound access
CVE-2024-44994 8.8 HIGH iommu: Restore lost return in iommu_report_device_fault()
CVE-2024-44986 8.1 HIGH ipv6: fix possible UAF in ip6_finish_output2()
CVE-2024-44973 8.1 HIGH mm, slub: do not call do_slab_free for kfence object
CVE-2024-44951 7.8 HIGH serial: sc16is7xx: fix TX fifo corruption
CVE-2024-44997 7.8 HIGH net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()
CVE-2024-44949 7.8 HIGH parisc: fix a possible DMA corruption
CVE-2024-45000 7.8 HIGH fs/netfs/fscache_cookie: add missing "n_accesses" check
CVE-2024-44959 7.8 HIGH tracefs: Use generic inode RCU for synchronizing freeing
CVE-2024-44954 7.8 HIGH ALSA: line6: Fix racy access to midibuf
CVE-2024-44966 7.8 HIGH binfmt_flat: Fix corruption when not offsetting data start
CVE-2024-44967 7.8 HIGH drm/mgag200: Bind I2C lifetime to DRM device
CVE-2024-44974 7.8 HIGH mptcp: pm: avoid possible UaF when selecting endp
CVE-2024-44995 7.8 HIGH net: hns3: fix a deadlock problem when config TC during resetting
CVE-2024-44978 7.8 HIGH drm/xe: Free job before xe_exec_queue_put
CVE-2024-44987 7.8 HIGH ipv6: prevent UAF in ip6_send_skb()

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-2024-44948

No comments yet

Leave a comment