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CVE-2024-41086— bcachefs: Fix sb_field_downgrade validation

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bch2_sb_downgrade_validate函数没有检查降级条目是否超出了超级块部分的末尾。

CVSS 7.8 · High EPSS 0.21% · P11

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 84f1638795da1ff2084597de4251e9054f1ad728< bf920ed92ef24dcd6970c88881cd4700b3acf05b affected
84f1638795da1ff2084597de4251e9054f1ad728< 692aa7a54b2b28d59f24b3bf8250837805484b99 affected
6.7 affected
< 6.7 unaffected
6.9.8≤ 6.9.* unaffected
6.10≤ * unaffected
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I. Basic Information for CVE-2024-41086

Vulnerability Information
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Vulnerability Title
bcachefs: Fix sb_field_downgrade validation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bcachefs: Fix sb_field_downgrade validation - bch2_sb_downgrade_validate() wasn't checking for a downgrade entry extending past the end of the superblock section - for_each_downgrade_entry() is used in to_text() and needs to work on malformed input; it also was missing a check for a field extending past the end of the section
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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bch2_sb_downgrade_validate函数没有检查降级条目是否超出了超级块部分的末尾。
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 84f1638795da1ff2084597de4251e9054f1ad728 ~ bf920ed92ef24dcd6970c88881cd4700b3acf05b -
Linux Linux 6.7 -

II. Public POCs for CVE-2024-41086

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III. Intelligence Information for CVE-2024-41086

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Other References for CVE-2024-41086 (2)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41075 7.8 HIGH cachefiles: add consistency check for copen/cread
CVE-2024-41041 7.8 HIGH udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-41017 7.8 HIGH jfs: don't walk off the end of ealist
CVE-2024-42067 7.8 HIGH bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-41051 7.8 HIGH cachefiles: wait for ondemand_object_worker to finish when dropping object
CVE-2024-42068 7.8 HIGH bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
CVE-2024-42069 7.8 HIGH net: mana: Fix possible double free in error handling path
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41069 7.8 HIGH ASoC: topology: Fix references to freed memory
CVE-2024-42075 7.8 HIGH bpf: Fix remap of arena.

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-41086

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