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CVE-2024-42265— protect the fetch of ->fd[fd] in do_dup2() from mispredictions

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，该漏洞源于错误预测导致数组索引问题。

AI Predicted 5.5 Difficulty: Hard EPSS 0.28% · P21

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8280d16172243702ed43432f826ca6130edb4086< ed42e8ff509d2a61c6642d1825032072dab79f26 affected
8280d16172243702ed43432f826ca6130edb4086< 41a6c31df77bd8e050136b0a200b537da9e1084a affected
8280d16172243702ed43432f826ca6130edb4086< 08775b3d6ed117cf4518754ec7300ee42b6a5368 affected
8280d16172243702ed43432f826ca6130edb4086< 3f480493550b6a23d3a65d095d6569d4a7f56a0f affected
8280d16172243702ed43432f826ca6130edb4086< 5db999fff545b924b24c9afd368ef5c17279b176 affected
8280d16172243702ed43432f826ca6130edb4086< da72e783afd27d9f487836b2e6738146c0edd149 affected
8280d16172243702ed43432f826ca6130edb4086< 1171ceccabfd596ca370c5d2cbb47d110c3f2fe1 affected
8280d16172243702ed43432f826ca6130edb4086< 8aa37bde1a7b645816cda8b80df4753ecf172bf1 affected
… +10 more rows
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I. Basic Information for CVE-2024-42265

Vulnerability Information
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Vulnerability Title
protect the fetch of ->fd[fd] in do_dup2() from mispredictions
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.
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，该漏洞源于错误预测导致数组索引问题。
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 8280d16172243702ed43432f826ca6130edb4086 ~ ed42e8ff509d2a61c6642d1825032072dab79f26 -
Linux Linux 3.7 -

II. Public POCs for CVE-2024-42265

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III. Intelligence Information for CVE-2024-42265

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Other References for CVE-2024-42265 (8)

Same Patch Batch · Linux · 2024-08-17 · 109 CVEs total

CVE-2024-42285 9.8 CRITICAL RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
CVE-2024-42284 9.1 CRITICAL tipc: Return non-zero value from tipc_udp_addr2str() on error
CVE-2024-43848 8.8 HIGH wifi: mac80211: fix TTLM teardown work
CVE-2024-43847 8.8 HIGH wifi: ath12k: fix invalid memory access while processing fragmented packets
CVE-2024-42287 8.8 HIGH scsi: qla2xxx: Complete command early within lock
CVE-2024-42318 8.8 HIGH landlock: Don't lose track of restrictions on cred_transfer
CVE-2024-42296 7.8 HIGH f2fs: fix return value of f2fs_convert_inline_inode()
CVE-2024-42288 7.8 HIGH scsi: qla2xxx: Fix for possible memory corruption
CVE-2024-43846 7.8 HIGH lib: objagg: Fix general protection fault
CVE-2024-43845 7.8 HIGH udf: Fix bogus checksum computation in udf_rename()
CVE-2024-42293 7.8 HIGH arm64: mm: Fix lockless walks with static and dynamic page-table folding
CVE-2024-43830 7.8 HIGH leds: trigger: Unregister sysfs attributes before calling deactivate()
CVE-2024-42300 7.8 HIGH erofs: fix race in z_erofs_get_gbuf()
CVE-2024-42313 7.8 HIGH media: venus: fix use after free in vdec_close
CVE-2024-42306 7.8 HIGH udf: Avoid using corrupted block bitmap buffer
CVE-2024-42304 7.8 HIGH ext4: make sure the first directory block is not a hole
CVE-2024-42314 7.8 HIGH btrfs: fix extent map use-after-free when adding pages to compressed bio
CVE-2024-42301 7.8 HIGH dev/parport: fix the array out-of-bounds risk
CVE-2024-43840 7.8 HIGH bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG
CVE-2024-43832 7.8 HIGH s390/uv: Don't call folio_wait_writeback() without a folio reference

Showing top 20 of 109 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42265

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