cbcvebase.
CVE-2024-27405
published 2024-05-17

CVE-2024-27405: In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs It is observed sometimes…

PriorityP339high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.29%
67.3th percentile
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs It is observed sometimes when tethering is used over NCM with Windows 11 as host, at some instances, the gadget_giveback has one byte appended at the end of a proper NTB. When the NTB is parsed, unwrap call looks for any leftover bytes in SKB provided by u_ether and if there are any pending bytes, it treats them as a separate NTB and parses it. But in case the second NTB (as per unwrap call) is faulty/corrupt, all the datagrams that were parsed properly in the first NTB and saved in rx_list are dropped. Adding a few custom traces showed the following: [002] d..1 7828.532866: dwc3_gadget_giveback: ep1out: req 000000003868811a length 1025/16384 zsI ==> 0 [002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb toprocess: 1025 [002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb seq: 0xce67 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x400 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb ndp_len: 0x10 [002] d..1 7828.532869: ncm_unwrap_ntb: K: Parsed NTB with 1 frames In this case, the giveback is of 1025 bytes and block length is 1024. The rest 1 byte (which is 0x00) won't be parsed resulting in drop of all datagrams in rx_list. Same is case with packets of size 2048: [002] d..1 7828.557948: dwc3_gadget_giveback: ep1out: req 0000000011dfd96e length 2049/16384 zsI ==> 0 [002] d..1 7828.557949: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342 [002] d..1 7828.557950: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x800 Lecroy shows one byte coming in extra confirming that the byte is coming in from PC: Transfer 2959 - Bytes Transferred(1025) Timestamp((18.524 843 590) - Transaction 8391 - Data(1025 bytes) Timestamp(18.524 843 590) --- Packet 4063861 Data(1024 bytes) Duration(2.117us) Idle(14.700ns) Timestamp(18.524 843 590)

Affected

25 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 059285e04ebb273d32323fbad5431c5b94f77e48059285e04ebb273d32323fbad5431c5b94f77e48
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < a31cf46d108dabce3df80b3e5c07661e24912151a31cf46d108dabce3df80b3e5c07661e24912151
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 57ca0e16f393bb21d69734e536e383a3a4c665fd57ca0e16f393bb21d69734e536e383a3a4c665fd
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 2cb66b62a5d64ccf09b0591ab86fb085fa491fc52cb66b62a5d64ccf09b0591ab86fb085fa491fc5
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 35b604a37ec70d68b19dafd10bbacf1db505c9ca35b604a37ec70d68b19dafd10bbacf1db505c9ca
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 2b7ec68869d50ea998908af43b643bca7e54577e2b7ec68869d50ea998908af43b643bca7e54577e
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < c7f43900bc723203d7554d299a2ce844054fab8ec7f43900bc723203d7554d299a2ce844054fab8e
linuxlinux>= 9f6ce4240a2bf456402c15c06768059e5973f28c < 76c51146820c5dac629f21deafab0a7039bc3ccd76c51146820c5dac629f21deafab0a7039bc3ccd
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.4.0-186.2065.4.0-186.206
linuxlinux_kernel>= 0 < 5.15.0-112.1225.15.0-112.122
linuxlinux_kernel>= 2.6.38 < 4.19.3084.19.308
linuxlinux_kernel>= 4.20 < 5.4.2705.4.270
linuxlinux_kernel>= 5.11 < 5.15.1505.15.150
linuxlinux_kernel>= 5.16 < 6.1.806.1.80
linuxlinux_kernel>= 5.5 < 5.10.2115.10.211
linuxlinux_kernel>= 6.2 < 6.6.196.6.19
linuxlinux_kernel>= 6.7 < 6.7.76.7.7

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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