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CVE-2024-36244— net/sched: taprio: extend minimum interval restriction to entire cycle too

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net/sched:taprio模块将最小间隔限制扩展到整个周期。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1134 · Access Token Manipulation

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux b5b73b26b3ca34574124ed7ae9c5ba8391a7f176< 34d83c3e6e97867ae061d14eb52123404aab1cbc affected
b5b73b26b3ca34574124ed7ae9c5ba8391a7f176< b939d1e04a90248b4cdf417b0969c270ceb992b2 affected
b5b73b26b3ca34574124ed7ae9c5ba8391a7f176< 91f249b01fe490fce11fbb4307952ca8cce78724 affected
b5b73b26b3ca34574124ed7ae9c5ba8391a7f176< fb66df20a7201e60f2b13d7f95d031b31a8831d3 affected
83bd58952b2b8543d8c48d1453975ab47a0a7504 affected
817ff50796c5e364c879596509f83fcba194bb6f affected
5.4.68< 5.5 affected
5.8.12< 5.9 affected
… +6 more rows
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I. Basic Information for CVE-2024-36244

Vulnerability Information
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Vulnerability Title
net/sched: taprio: extend minimum interval restriction to entire cycle too
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: extend minimum interval restriction to entire cycle too It is possible for syzbot to side-step the restriction imposed by the blamed commit in the Fixes: tag, because the taprio UAPI permits a cycle-time different from (and potentially shorter than) the sum of entry intervals. We need one more restriction, which is that the cycle time itself must be larger than N * ETH_ZLEN bit times, where N is the number of schedule entries. This restriction needs to apply regardless of whether the cycle time came from the user or was the implicit, auto-calculated value, so we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)" branch. This way covers both conditions and scenarios. Add a selftest which illustrates the issue triggered by syzbot.
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net/sched:taprio模块将最小间隔限制扩展到整个周期。
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 b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 ~ 34d83c3e6e97867ae061d14eb52123404aab1cbc -
Linux Linux 5.9 -

II. Public POCs for CVE-2024-36244

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III. Intelligence Information for CVE-2024-36244

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Patches & Fixes for CVE-2024-36244 (1)

Other References for CVE-2024-36244 (3)

Same Patch Batch · Linux · 2024-06-21 · 40 CVEs total

CVE-2024-36288 9.8 CRITICAL SUNRPC: Fix loop termination condition in gss_free_in_token_pages()
CVE-2024-38381 8.8 HIGH nfc: nci: Fix uninit-value in nci_rx_work
CVE-2024-33619 7.8 HIGH efi: libstub: only free priv.runtime_map when allocated
CVE-2024-36477 7.8 HIGH tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer
CVE-2024-38628 7.8 HIGH usb: gadget: u_audio: Fix race condition use of controls after free during gadget unbind.
CVE-2024-36286 7.8 HIGH netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()
CVE-2024-38626 7.8 HIGH fuse: clear FR_SENT when re-adding requests into pending list
CVE-2024-38388 7.8 HIGH ALSA: hda/cs_dsp_ctl: Use private_free for control cleanup
CVE-2024-38623 7.8 HIGH fs/ntfs3: Use variable length array instead of fixed size
CVE-2024-38635 7.8 HIGH soundwire: cadence: fix invalid PDI offset
CVE-2024-38659 7.3 HIGH enic: Validate length of nl attributes in enic_set_vf_port
CVE-2024-38631 iio: adc: PAC1934: fix accessing out of bounds array index
CVE-2024-38625 fs/ntfs3: Check 'folio' pointer for NULL
CVE-2024-38632 vfio/pci: fix potential memory leak in vfio_intx_enable()
CVE-2024-38633 serial: max3100: Update uart_driver_registered on driver removal
CVE-2024-38634 serial: max3100: Lock port->lock when calling uart_handle_cts_change()
CVE-2024-38636 f2fs: multidev: fix to recognize valid zero block address
CVE-2024-38637 greybus: lights: check return of get_channel_from_mode
CVE-2024-38662 bpf: Allow delete from sockmap/sockhash only if update is allowed
CVE-2024-38780 dma-buf/sw-sync: don't enable IRQ from sync_print_obj()

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-36244

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