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CVE-2024-49877— ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate

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ocfs2文件系统在清理时可能触发空指针取消引用。

AI Predicted 4.7 Difficulty: Moderate EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 27

VendorProduct Version RangeStatus
Linux Linux 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc< 190d98bcd61117a78fe185222d162180f061a6ca affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< e68c8323355e8cedfbe0bec7d5a39009f61640b6 affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< 61b84013e560382cbe7dd56758be3154d43a3988 affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< df944dc46d06af65a75191183d52be017e6b9dbe affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< 01cb2e751cc61ade454c9bc1aaa2eac1f8197112 affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< d52c5652e7dcb7a0648bbb8642cc3e617070ab49 affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< 46b1edf0536a5291a8ad2337f88c926214b209d9 affected
cf76c78595ca87548ca5e45c862ac9e0949c4687< 4846e72ab5a0726e49ad4188b9d9df091ae78c64 affected
… +19 more rows
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I. Basic Information for CVE-2024-49877

Vulnerability Information
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Vulnerability Title
ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate When doing cleanup, if flags without OCFS2_BH_READAHEAD, it may trigger NULL pointer dereference in the following ocfs2_set_buffer_uptodate() if bh is NULL.
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ocfs2文件系统在清理时可能触发空指针取消引用。
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 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc ~ 190d98bcd61117a78fe185222d162180f061a6ca -
Linux Linux 4.20 -

II. Public POCs for CVE-2024-49877

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III. Intelligence Information for CVE-2024-49877

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Patches & Fixes for CVE-2024-49877 (1)

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

CVE-2024-50043 9.8 CRITICAL nfsd: fix possible badness in FREE_STATEID
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-2024-49855 9.8 CRITICAL nbd: fix race between timeout and normal completion
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-2022-49003 9.8 CRITICAL nvme: fix SRCU protection of nvme_ns_head list
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-2024-50029 8.8 HIGH Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-50041 8.8 HIGH i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-49939 8.8 HIGH wifi: rtw89: avoid to add interface to list twice when SER
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-2022-48964 8.8 HIGH ravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2022-49015 8.8 HIGH net: hsr: Fix potential use-after-free
CVE-2022-48967 8.8 HIGH NFC: nci: Bounds check struct nfc_target arrays
CVE-2024-49930 8.8 HIGH wifi: ath11k: fix array out-of-bound access in SoC stats

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-2024-49877

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