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CVE-2024-49902— jfs: check if leafidx greater than num leaves per dmap tree

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jfs文件系统的dbFindLeaf函数中未检查leafidx是否大于dmap树的叶子数量。

CVSS 7.8 · High EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1206

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d76b9a4c283c7535ae7c7c9b14984e75402951e1 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 35b91f15f44ce3c01eba058ccb864bb04743e792 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2451e5917c56be45d4add786e2a059dd9c2c37c4 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 25d2a3ff02f22e215ce53355619df10cc5faa7ab affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 058aa89b3318be3d66a103ba7c68d717561e1dc6 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7fff9a9f866e99931cf6fa260288e55d01626582 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< cb0eb10558802764f07de1dc439c4609e27cb4f0 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4a7bf6a01fb441009a6698179a739957efd88e38 affected
… +12 more rows
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I. Basic Information for CVE-2024-49902

Vulnerability Information
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Vulnerability Title
jfs: check if leafidx greater than num leaves per dmap tree
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jfs: check if leafidx greater than num leaves per dmap tree syzbot report a out of bounds in dbSplit, it because dmt_leafidx greater than num leaves per dmap tree, add a checking for dmt_leafidx in dbFindLeaf. Shaggy: Modified sanity check to apply to control pages as well as leaf pages.
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 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jfs文件系统的dbFindLeaf函数中未检查leafidx是否大于dmap树的叶子数量。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ d76b9a4c283c7535ae7c7c9b14984e75402951e1 -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2024-49902

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III. Intelligence Information for CVE-2024-49902

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Patches & Fixes for CVE-2024-49902 (1)

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

CVE-2022-48985 9.8 CRITICAL net: mana: Fix race on per-CQ variable napi work_done
CVE-2024-47695 9.8 CRITICAL RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
CVE-2024-50033 9.8 CRITICAL slip: make slhc_remember() more robust against malicious packets
CVE-2022-49003 9.8 CRITICAL nvme: fix SRCU protection of nvme_ns_head list
CVE-2024-49855 9.8 CRITICAL nbd: fix race between timeout and normal completion
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-2022-49017 8.8 HIGH tipc: re-fetch skb cb after tipc_msg_validate
CVE-2024-50041 8.8 HIGH i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-50029 8.8 HIGH Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2022-48964 8.8 HIGH ravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2022-48960 8.8 HIGH net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
CVE-2022-48962 8.8 HIGH net: hisilicon: Fix potential use-after-free in hisi_femac_rx()
CVE-2022-49015 8.8 HIGH net: hsr: Fix potential use-after-free
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

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-2024-49902

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