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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-50042— ice: Fix increasing MSI-X on VF

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，该漏洞源于在VF上增加MSI-X值导致的无效内存操作。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 2a2cb4c6c18130e9f14d2e39deb75590744d98ef< cbda6197929418fabf0e45ecf9b7a76360944c70 affected
2a2cb4c6c18130e9f14d2e39deb75590744d98ef< bce9af1b030bf59d51bbabf909a3ef164787e44e affected
8910b1cef190545085e9bb486f35dd30ad928a05 affected
6.7.10< 6.8 affected
6.8 affected
< 6.8 unaffected
6.11.4≤ 6.11.* unaffected
6.12≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-50042

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
ice: Fix increasing MSI-X on VF
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ice: Fix increasing MSI-X on VF Increasing MSI-X value on a VF leads to invalid memory operations. This is caused by not reallocating some arrays. Reproducer: modprobe ice echo 0 > /sys/bus/pci/devices/$PF_PCI/sriov_drivers_autoprobe echo 1 > /sys/bus/pci/devices/$PF_PCI/sriov_numvfs echo 17 > /sys/bus/pci/devices/$VF0_PCI/sriov_vf_msix_count Default MSI-X is 16, so 17 and above triggers this issue. KASAN reports: BUG: KASAN: slab-out-of-bounds in ice_vsi_alloc_ring_stats+0x38d/0x4b0 [ice] Read of size 8 at addr ffff8888b937d180 by task bash/28433 (...) Call Trace: (...) ? ice_vsi_alloc_ring_stats+0x38d/0x4b0 [ice] kasan_report+0xed/0x120 ? ice_vsi_alloc_ring_stats+0x38d/0x4b0 [ice] ice_vsi_alloc_ring_stats+0x38d/0x4b0 [ice] ice_vsi_cfg_def+0x3360/0x4770 [ice] ? mutex_unlock+0x83/0xd0 ? __pfx_ice_vsi_cfg_def+0x10/0x10 [ice] ? __pfx_ice_remove_vsi_lkup_fltr+0x10/0x10 [ice] ice_vsi_cfg+0x7f/0x3b0 [ice] ice_vf_reconfig_vsi+0x114/0x210 [ice] ice_sriov_set_msix_vec_count+0x3d0/0x960 [ice] sriov_vf_msix_count_store+0x21c/0x300 (...) Allocated by task 28201: (...) ice_vsi_cfg_def+0x1c8e/0x4770 [ice] ice_vsi_cfg+0x7f/0x3b0 [ice] ice_vsi_setup+0x179/0xa30 [ice] ice_sriov_configure+0xcaa/0x1520 [ice] sriov_numvfs_store+0x212/0x390 (...) To fix it, use ice_vsi_rebuild() instead of ice_vf_reconfig_vsi(). This causes the required arrays to be reallocated taking the new queue count into account (ice_vsi_realloc_stat_arrays()). Set req_txq and req_rxq before ice_vsi_rebuild(), so that realloc uses the newly set queue count. Additionally, ice_vsi_rebuild() does not remove VSI filters (ice_fltr_remove_all()), so ice_vf_init_host_cfg() is no longer necessary.
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，该漏洞源于在VF上增加MSI-X值导致的无效内存操作。
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 2a2cb4c6c18130e9f14d2e39deb75590744d98ef ~ cbda6197929418fabf0e45ecf9b7a76360944c70 -
Linux Linux 6.8 -

II. Public POCs for CVE-2024-50042

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-50042

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-50042 (2)

Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total

CVE-2024-50033 9.8 CRITICAL slip: make slhc_remember() more robust against malicious packets
CVE-2024-49855 9.8 CRITICAL nbd: fix race between timeout and normal completion
CVE-2024-47695 9.8 CRITICAL RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
CVE-2022-48985 9.8 CRITICAL net: mana: Fix race on per-CQ variable napi work_done
CVE-2022-49003 9.8 CRITICAL nvme: fix SRCU protection of nvme_ns_head list
CVE-2024-50043 9.8 CRITICAL nfsd: fix possible badness in FREE_STATEID
CVE-2024-50047 9.8 CRITICAL smb: client: fix UAF in async decryption
CVE-2024-50046 9.8 CRITICAL NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
CVE-2024-49996 9.4 CRITICAL cifs: Fix buffer overflow when parsing NFS reparse points
CVE-2024-47678 9.4 CRITICAL icmp: change the order of rate limits
CVE-2022-48962 8.8 HIGH net: hisilicon: Fix potential use-after-free in hisi_femac_rx()
CVE-2024-49950 8.8 HIGH Bluetooth: L2CAP: Fix uaf in l2cap_connect
CVE-2024-49939 8.8 HIGH wifi: rtw89: avoid to add interface to list twice when SER
CVE-2022-48967 8.8 HIGH NFC: nci: Bounds check struct nfc_target arrays
CVE-2022-48964 8.8 HIGH ravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2024-50029 8.8 HIGH Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-49930 8.8 HIGH wifi: ath11k: fix array out-of-bound access in SoC stats
CVE-2024-50041 8.8 HIGH i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-49936 8.8 HIGH net/xen-netback: prevent UAF in xenvif_flush_hash()
CVE-2022-48954 8.8 HIGH s390/qeth: fix use-after-free in hsci

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-50042

No comments yet

Leave a comment