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CVE-2024-45016— netem: fix return value if duplicate enqueue fails

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netem组件存在重复入队失败返回值问题。

CVSS 7.8 · High EPSS 0.28% · P20

Affected Version Matrix 26

VendorProduct Version RangeStatus
Linux Linux 5845f706388a4cde0f6b80f9e5d33527e942b7d9< 759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4 affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< c414000da1c2ea1ba9a5e5bb1a4ba774e51e202d affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< 52d99a69f3d556c6426048c9d481b912205919d8 affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< 0486d31dd8198e22b63a4730244b38fffce6d469 affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< 577d6c0619467fe90f7e8e57e45cb5bd9d936014 affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< e5bb2988a310667abed66c7d3ffa28880cf0f883 affected
5845f706388a4cde0f6b80f9e5d33527e942b7d9< c07ff8592d57ed258afee5a5e04991a48dbaf382 affected
a550a01b8af856f2684b0f79d552f5119eb5006c affected
… +18 more rows
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I. Basic Information for CVE-2024-45016

Vulnerability Information
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Vulnerability Title
netem: fix return value if duplicate enqueue fails
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue() introduced by commit 5845f706388a ("net: netem: fix skb length BUG_ON in __skb_to_sgvec") that can lead to a use-after-free. This commit made netem_enqueue() always return NET_XMIT_SUCCESS when a packet is duplicated, which can cause the parent qdisc's q.qlen to be mistakenly incremented. When this happens qlen_notify() may be skipped on the parent during destruction, leaving a dangling pointer for some classful qdiscs like DRR. There are two ways for the bug happen: - If the duplicated packet is dropped by rootq->enqueue() and then the original packet is also dropped. - If rootq->enqueue() sends the duplicated packet to a different qdisc and the original packet is dropped. In both cases NET_XMIT_SUCCESS is returned even though no packets are enqueued at the netem qdisc. The fix is to defer the enqueue of the duplicate packet until after the original packet has been guaranteed to return NET_XMIT_SUCCESS.
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netem组件存在重复入队失败返回值问题。
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 5845f706388a4cde0f6b80f9e5d33527e942b7d9 ~ 759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4 -
Linux Linux 5.0 -

II. Public POCs for CVE-2024-45016

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III. Intelligence Information for CVE-2024-45016

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Same Patch Batch · Linux · 2024-09-11 · 23 CVEs total

CVE-2024-45030 9.8 CRITICAL igb: cope with large MAX_SKB_FRAGS
CVE-2024-45013 9.8 CRITICAL nvme: move stopping keep-alive into nvme_uninit_ctrl()
CVE-2024-45009 8.2 HIGH mptcp: pm: only decrement add_addr_accepted for MPJ req
CVE-2024-45017 7.8 HIGH net/mlx5: Fix IPsec RoCE MPV trace call
CVE-2024-45019 7.8 HIGH net/mlx5e: Take state lock during tx timeout reporter
CVE-2024-45020 7.8 HIGH bpf: Fix a kernel verifier crash in stacksafe()
CVE-2024-45024 7.8 HIGH mm/hugetlb: fix hugetlb vs. core-mm PT locking
CVE-2024-45022 7.8 HIGH mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0
CVE-2024-45023 7.8 HIGH md/raid1: Fix data corruption for degraded array with slow disk
CVE-2024-45021 7.1 HIGH memcg_write_event_control(): fix a user-triggerable oops
CVE-2024-45026 7.0 HIGH s390/dasd: fix error recovery leading to data corruption on ESE devices
CVE-2024-46672 wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
CVE-2024-45025 fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE
CVE-2024-45027 usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
CVE-2024-45018 netfilter: flowtable: initialise extack before use
CVE-2024-45014 s390/boot: Avoid possible physmem_info segment corruption
CVE-2024-45015 drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable()
CVE-2024-45012 nouveau/firmware: use dma non-coherent allocator
CVE-2024-45029 i2c: tegra: Do not mark ACPI devices as irq safe
CVE-2024-45011 char: xillybus: Check USB endpoints when probing device

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-45016

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