{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26766", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Fix sdma.h tx->num_descs off-by-one error\n\nUnfortunately the commit `fd8958efe877` introduced another error\ncausing the `descs` array to overflow. This reults in further crashes\neasily reproducible by `sendmsg` system call.\n\n[ 1080.836473] general protection fault, probably for non-canonical address 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI\n[ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1]\n--\n[ 1080.974535] Call Trace:\n[ 1080.976990] \n[ 1081.021929] hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1]\n[ 1081.027364] hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1]\n[ 1081.032633] hfi1_ipoib_send+0x112/0x300 [hfi1]\n[ 1081.042001] ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib]\n[ 1081.046978] dev_hard_start_xmit+0xc4/0x210\n--\n[ 1081.148347] __sys_sendmsg+0x59/0xa0\n\ncrash> ipoib_txreq 0xffff9cfeba229f00\nstruct ipoib_txreq {\n txreq = {\n list = {\n next = 0xffff9cfeba229f00,\n prev = 0xffff9cfeba229f00\n },\n descp = 0xffff9cfeba229f40,\n coalesce_buf = 0x0,\n wait = 0xffff9cfea4e69a48,\n complete = 0xffffffffc0fe0760 ,\n packet_len = 0x46d,\n tlen = 0x0,\n num_desc = 0x0,\n desc_limit = 0x6,\n next_descq_idx = 0x45c,\n coalesce_idx = 0x0,\n flags = 0x0,\n descs = {{\n qw = {0x8024000120dffb00, 0x4} # SDMA_DESC0_FIRST_DESC_FLAG (bit 63)\n }, {\n qw = { 0x3800014231b108, 0x4}\n }, {\n qw = { 0x310000e4ee0fcf0, 0x8}\n }, {\n qw = { 0x3000012e9f8000, 0x8}\n }, {\n qw = { 0x59000dfb9d0000, 0x8}\n }, {\n qw = { 0x78000e02e40000, 0x8}\n }}\n },\n sdma_hdr = 0x400300015528b000, <<< invalid pointer in the tx request structure\n sdma_status = 0x0, SDMA_DESC0_LAST_DESC_FLAG (bit 62)\n complete = 0x0,\n priv = 0x0,\n txq = 0xffff9cfea4e69880,\n skb = 0xffff9d099809f400\n}\n\nIf an SDMA send consists of exactly 6 descriptors and requires dword\npadding (in the 7th descriptor), the sdma_txreq descriptor array is not\nproperly expanded and the packet will overflow into the container\nstructure. This results in a panic when the send completion runs. The\nexact panic varies depending on what elements of the container structure\nget corrupted. The fix is to use the correct expression in\n_pad_sdma_tx_descs() to test the need to expand the descriptor array.\n\nWith this patch the crashes are no longer reproducible and the machine is\nstable." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "d1c1ee052d25", "version_value": "115b7f3bc1dc" }, { "version_affected": "<", "version_name": "40ac5cb6cbb0", "version_value": "5833024a9856" }, { "version_affected": "<", "version_name": "6cf8f3d690bb", "version_value": "3f38d22e645e" }, { "version_affected": "<", "version_name": "bd57756a7e43", "version_value": "47ae64df23ed" }, { "version_affected": "<", "version_name": "eeaf35f4e3b3", "version_value": "52dc9a7a573d" }, { "version_affected": "<", "version_name": "fd8958efe877", "version_value": "a2fef1d81bec" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.308", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.270", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.211", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.150", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/115b7f3bc1dce590a6851a2dcf23dc1100c49790", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/115b7f3bc1dce590a6851a2dcf23dc1100c49790" }, { "url": "https://git.kernel.org/stable/c/5833024a9856f454a964a198c63a57e59e07baf5", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/5833024a9856f454a964a198c63a57e59e07baf5" }, { "url": "https://git.kernel.org/stable/c/3f38d22e645e2e994979426ea5a35186102ff3c2", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3f38d22e645e2e994979426ea5a35186102ff3c2" }, { "url": "https://git.kernel.org/stable/c/47ae64df23ed1318e27bd9844e135a5e1c0e6e39", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/47ae64df23ed1318e27bd9844e135a5e1c0e6e39" }, { "url": "https://git.kernel.org/stable/c/52dc9a7a573dbf778625a0efca0fca55489f084b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/52dc9a7a573dbf778625a0efca0fca55489f084b" }, { "url": "https://git.kernel.org/stable/c/a2fef1d81becf4ff60e1a249477464eae3c3bc2a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a2fef1d81becf4ff60e1a249477464eae3c3bc2a" }, { "url": "https://git.kernel.org/stable/c/9034a1bec35e9f725315a3bb6002ef39666114d9", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/9034a1bec35e9f725315a3bb6002ef39666114d9" }, { "url": "https://git.kernel.org/stable/c/e6f57c6881916df39db7d95981a8ad2b9c3458d6", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/e6f57c6881916df39db7d95981a8ad2b9c3458d6" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }