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CVE-2024-43890— tracing: Fix overflow in get_free_elt()

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get_free_elt函数中发现包含溢出问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.26% · P16

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 08d43a5fa063e03c860f2f391a30c388bcbc948e< 302ceb625d7b990db205a15e371f9a71238de91c affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18 affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< eb223bf01e688dfe37e813c8988ee11c8c9f8d0a affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< cd10d186a5409a1fe6e976df82858e9773a698da affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< 788ea62499b3c18541fd6d621964d8fafbc4aec5 affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< a172c7b22bc2feaf489cfc6d6865f7237134fdf8 affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< 236bb4690773ab6869b40bedc7bc8d889e36f9d6 affected
08d43a5fa063e03c860f2f391a30c388bcbc948e< bcf86c01ca4676316557dd482c8416ece8c2e143 affected
… +10 more rows
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I. Basic Information for CVE-2024-43890

Vulnerability Information
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Vulnerability Title
tracing: Fix overflow in get_free_elt()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
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get_free_elt函数中发现包含溢出问题。
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 08d43a5fa063e03c860f2f391a30c388bcbc948e ~ 302ceb625d7b990db205a15e371f9a71238de91c -
Linux Linux 4.7 -

II. Public POCs for CVE-2024-43890

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III. Intelligence Information for CVE-2024-43890

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Other References for CVE-2024-43890 (7)

Same Patch Batch · Linux · 2024-08-26 · 39 CVEs total

CVE-2024-44942 7.8 HIGH f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during GC
CVE-2024-43910 7.8 HIGH bpf: add missing check_func_arg_reg_off() to prevent out-of-bounds memory accesses
CVE-2024-44934 7.8 HIGH net: bridge: mcast: wait for previous gc cycles when removing port
CVE-2024-43897 7.8 HIGH net: drop bad gso csum_start and offset in virtio_net_hdr
CVE-2024-44939 7.8 HIGH jfs: fix null ptr deref in dtInsertEntry
CVE-2024-43892 7.8 HIGH memcg: protect concurrent access to mem_cgroup_idr
CVE-2024-43891 7.8 HIGH tracing: Have format file honor EVENT_FILE_FL_FREED
CVE-2024-43888 7.8 HIGH mm: list_lru: fix UAF for memory cgroup
CVE-2024-44941 7.8 HIGH f2fs: fix to cover read extent cache access with lock
CVE-2024-44940 7.5 HIGH fou: remove warn in gue_gro_receive on unsupported protocol
CVE-2024-44933 7.3 HIGH bnxt_en : Fix memory out-of-bounds in bnxt_fill_hw_rss_tbl()
CVE-2024-43913 7.0 HIGH nvme: apple: fix device reference counting
CVE-2024-44938 jfs: Fix shift-out-of-bounds in dbDiscardAG
CVE-2024-44937 platform/x86: intel-vbtn: Protect ACPI notify handler against recursion
CVE-2024-44936 power: supply: rt5033: Bring back i2c_set_clientdata
CVE-2024-44935 sctp: Fix null-ptr-deref in reuseport_add_sock().
CVE-2024-44932 idpf: fix UAFs when destroying the queues
CVE-2024-44931 gpio: prevent potential speculation leaks in gpio_device_get_desc()
CVE-2024-43914 md/raid5: avoid BUG_ON() while continue reshape after reassembling
CVE-2024-43912 wifi: nl80211: disallow setting special AP channel widths

Showing top 20 of 39 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-43890

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