cbcvebase.
CVE-2024-26766
published 2024-04-03

CVE-2024-26766: In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error Unfortunately the commit `fd8958efe877`…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.26%
17.3th percentile
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error Unfortunately the commit `fd8958efe877` introduced another error causing the `descs` array to overflow. This reults in further crashes easily reproducible by `sendmsg` system call. [ 1080.836473] general protection fault, probably for non-canonical address 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI [ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1] -- [ 1080.974535] Call Trace: [ 1080.976990] [ 1081.021929] hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1] [ 1081.027364] hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1] [ 1081.032633] hfi1_ipoib_send+0x112/0x300 [hfi1] [ 1081.042001] ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib] [ 1081.046978] dev_hard_start_xmit+0xc4/0x210 -- [ 1081.148347] __sys_sendmsg+0x59/0xa0 crash> ipoib_txreq 0xffff9cfeba229f00 struct ipoib_txreq { txreq = { list = { next = 0xffff9cfeba229f00, prev = 0xffff9cfeba229f00 }, descp = 0xffff9cfeba229f40, coalesce_buf = 0x0, wait = 0xffff9cfea4e69a48, complete = 0xffffffffc0fe0760 , packet_len = 0x46d, tlen = 0x0, num_desc = 0x0, desc_limit = 0x6, next_descq_idx = 0x45c, coalesce_idx = 0x0, flags = 0x0, descs = {{ qw = {0x8024000120dffb00, 0x4} # SDMA_DESC0_FIRST_DESC_FLAG (bit 63) }, { qw = { 0x3800014231b108, 0x4} }, { qw = { 0x310000e4ee0fcf0, 0x8} }, { qw = { 0x3000012e9f8000, 0x8} }, { qw = { 0x59000dfb9d0000, 0x8} }, { qw = { 0x78000e02e40000, 0x8} }} }, sdma_hdr = 0x400300015528b000, <<< invalid pointer in the tx request structure sdma_status = 0x0, SDMA_DESC0_LAST_DESC_FLAG (bit 62) complete = 0x0, priv = 0x0, txq = 0xffff9cfea4e69880, skb = 0xffff9d099809f400 } If an SDMA send consists of exactly 6 descriptors and requires dword padding (in the 7th descriptor), the sdma_txreq descriptor array is not properly expanded and the packet will overflow into the container structure. This results in a panic when the send completion runs. The exact panic va

Affected

36 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux>= 4.19.291 < 4.19.3084.19.308
linuxlinux>= 40ac5cb6cbb01afa40881f78b4d2f559fb7065c4 < 5833024a9856f454a964a198c63a57e59e07baf55833024a9856f454a964a198c63a57e59e07baf5
linuxlinux>= 5.10.188 < 5.10.2115.10.211
linuxlinux>= 5.15.99 < 5.15.1505.15.150
linuxlinux>= 5.4.251 < 5.4.2705.4.270
linuxlinux>= 6.1.16 < 6.1.806.1.80
linuxlinux>= 6.2.3 < 6.36.3
linuxlinux>= 6cf8f3d690bb5ad31ef0f41a6206ecf5a068d179 < 3f38d22e645e2e994979426ea5a35186102ff3c23f38d22e645e2e994979426ea5a35186102ff3c2
linuxlinux>= bd57756a7e43c7127d0eca1fc5868e705fd0f7ba < 47ae64df23ed1318e27bd9844e135a5e1c0e6e3947ae64df23ed1318e27bd9844e135a5e1c0e6e39
linuxlinux>= d1c1ee052d25ca23735eea912f843bc7834781b4 < 115b7f3bc1dce590a6851a2dcf23dc1100c49790115b7f3bc1dce590a6851a2dcf23dc1100c49790
linuxlinux>= eeaf35f4e3b360162081de5e744cf32d6d1b0091 < 52dc9a7a573dbf778625a0efca0fca55489f084b52dc9a7a573dbf778625a0efca0fca55489f084b
linuxlinux>= fd8958efe8779d3db19c9124fce593ce681ac709 < a2fef1d81becf4ff60e1a249477464eae3c3bc2aa2fef1d81becf4ff60e1a249477464eae3c3bc2a
linuxlinux>= fd8958efe8779d3db19c9124fce593ce681ac709 < 9034a1bec35e9f725315a3bb6002ef39666114d99034a1bec35e9f725315a3bb6002ef39666114d9
linuxlinux>= fd8958efe8779d3db19c9124fce593ce681ac709 < e6f57c6881916df39db7d95981a8ad2b9c3458d6e6f57c6881916df39db7d95981a8ad2b9c3458d6
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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