Vulnerability-Lookup

GSD-2024-26815

Vulnerability from gsd - Updated: 2024-02-20 06:02

Details

In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check taprio_parse_tc_entry() is not correctly checking TCA_TAPRIO_TC_ENTRY_INDEX attribute: int tc; // Signed value tc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]); if (tc >= TC_QOPT_MAX_QUEUE) { NL_SET_ERR_MSG_MOD(extack, "TC entry index out of range"); return -ERANGE; } syzbot reported that it could fed arbitary negative values: UBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18 shift exponent -2147418108 is negative CPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386 taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline] taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline] taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877 taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134 qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355 tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f1b2dea3759 Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 R10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340 R13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340

Aliases

CVE-2024-26815

JSON

To clipboard

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26815"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check\n\ntaprio_parse_tc_entry() is not correctly checking\nTCA_TAPRIO_TC_ENTRY_INDEX attribute:\n\n\tint tc; // Signed value\n\n\ttc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]);\n\tif (tc \u003e= TC_QOPT_MAX_QUEUE) {\n\t\tNL_SET_ERR_MSG_MOD(extack, \"TC entry index out of range\");\n\t\treturn -ERANGE;\n\t}\n\nsyzbot reported that it could fed arbitary negative values:\n\nUBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18\nshift exponent -2147418108 is negative\nCPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  ubsan_epilogue lib/ubsan.c:217 [inline]\n  __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386\n  taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline]\n  taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline]\n  taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877\n  taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134\n  qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355\n  tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f1b2dea3759\nCode: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004\nRBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000\nR10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340\nR13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340",
      "id": "GSD-2024-26815",
      "modified": "2024-02-20T06:02:29.194110Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26815",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
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                          "version_affected": "\u003c",
                          "version_name": "a54fc09e4cba",
                          "version_value": "bd2474a45df7"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
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                            "versions": [
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                                "status": "unaffected",
                                "version": "0",
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                              {
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                                "status": "unaffected",
                                "version": "6.1.83",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.6.*",
                                "status": "unaffected",
                                "version": "6.6.23",
                                "versionType": "custom"
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                              {
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                                "status": "unaffected",
                                "version": "6.7.11",
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                              {
                                "lessThanOrEqual": "6.8.*",
                                "status": "unaffected",
                                "version": "6.8.2",
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                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check\n\ntaprio_parse_tc_entry() is not correctly checking\nTCA_TAPRIO_TC_ENTRY_INDEX attribute:\n\n\tint tc; // Signed value\n\n\ttc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]);\n\tif (tc \u003e= TC_QOPT_MAX_QUEUE) {\n\t\tNL_SET_ERR_MSG_MOD(extack, \"TC entry index out of range\");\n\t\treturn -ERANGE;\n\t}\n\nsyzbot reported that it could fed arbitary negative values:\n\nUBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18\nshift exponent -2147418108 is negative\nCPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  ubsan_epilogue lib/ubsan.c:217 [inline]\n  __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386\n  taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline]\n  taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline]\n  taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877\n  taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134\n  qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355\n  tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f1b2dea3759\nCode: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004\nRBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000\nR10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340\nR13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340"
          }
        ]
      },
      "generator": {
        "engine": "bippy-d175d3acf727"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/bd2474a45df7c11412c2587de3d4e43760531418",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/bd2474a45df7c11412c2587de3d4e43760531418"
          },
          {
            "name": "https://git.kernel.org/stable/c/6915b1b28fe57e92c78e664366dc61c4f15ff03b",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/6915b1b28fe57e92c78e664366dc61c4f15ff03b"
          },
          {
            "name": "https://git.kernel.org/stable/c/860e838fb089d652a446ced52cbdf051285b68e7",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/860e838fb089d652a446ced52cbdf051285b68e7"
          },
          {
            "name": "https://git.kernel.org/stable/c/9b720bb1a69a9f12a4a5c86b6f89386fe05ed0f2",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/9b720bb1a69a9f12a4a5c86b6f89386fe05ed0f2"
          },
          {
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            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/343041b59b7810f9cdca371f445dd43b35c740b1"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check\n\ntaprio_parse_tc_entry() is not correctly checking\nTCA_TAPRIO_TC_ENTRY_INDEX attribute:\n\n\tint tc; // Signed value\n\n\ttc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]);\n\tif (tc \u003e= TC_QOPT_MAX_QUEUE) {\n\t\tNL_SET_ERR_MSG_MOD(extack, \"TC entry index out of range\");\n\t\treturn -ERANGE;\n\t}\n\nsyzbot reported that it could fed arbitary negative values:\n\nUBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18\nshift exponent -2147418108 is negative\nCPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  ubsan_epilogue lib/ubsan.c:217 [inline]\n  __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386\n  taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline]\n  taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline]\n  taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877\n  taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134\n  qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355\n  tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f1b2dea3759\nCode: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004\nRBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000\nR10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340\nR13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340"
          }
        ],
        "id": "CVE-2024-26815",
        "lastModified": "2024-04-10T13:23:38.787",
        "metrics": {},
        "published": "2024-04-10T11:15:49.380",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/343041b59b7810f9cdca371f445dd43b35c740b1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6915b1b28fe57e92c78e664366dc61c4f15ff03b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/860e838fb089d652a446ced52cbdf051285b68e7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9b720bb1a69a9f12a4a5c86b6f89386fe05ed0f2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/bd2474a45df7c11412c2587de3d4e43760531418"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}

CVE-2024-26815 (GCVE-0-2024-26815)

Vulnerability from cvelistv5 – Published: 2024-04-10 11:07 – Updated: 2026-08-05 11:27

Title

net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:50 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/bd2474a45df7c1141…
https://git.kernel.org/stable/c/6915b1b28fe57e92c…
https://git.kernel.org/stable/c/860e838fb089d652a…
https://git.kernel.org/stable/c/9b720bb1a69a9f12a…
https://git.kernel.org/stable/c/343041b59b7810f9c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a54fc09e4cba3004443aa05979f8c678196c8226 , < bd2474a45df7c11412c2587de3d4e43760531418 (git) Affected: a54fc09e4cba3004443aa05979f8c678196c8226 , < 6915b1b28fe57e92c78e664366dc61c4f15ff03b (git) Affected: a54fc09e4cba3004443aa05979f8c678196c8226 , < 860e838fb089d652a446ced52cbdf051285b68e7 (git) Affected: a54fc09e4cba3004443aa05979f8c678196c8226 , < 9b720bb1a69a9f12a4a5c86b6f89386fe05ed0f2 (git) Affected: a54fc09e4cba3004443aa05979f8c678196c8226 , < 343041b59b7810f9cdca371f445dd43b35c740b1 (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.83 , ≤ 6.1.* (semver) Unaffected: 6.6.23 , ≤ 6.6.* (semver) Unaffected: 6.7.11 , ≤ 6.7.* (semver) Unaffected: 6.8.2 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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            "url": "https://git.kernel.org/stable/c/343041b59b7810f9cdca371f445dd43b35c740b1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26815",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:50:23.957243Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:41.649Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_taprio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bd2474a45df7c11412c2587de3d4e43760531418",
              "status": "affected",
              "version": "a54fc09e4cba3004443aa05979f8c678196c8226",
              "versionType": "git"
            },
            {
              "lessThan": "6915b1b28fe57e92c78e664366dc61c4f15ff03b",
              "status": "affected",
              "version": "a54fc09e4cba3004443aa05979f8c678196c8226",
              "versionType": "git"
            },
            {
              "lessThan": "860e838fb089d652a446ced52cbdf051285b68e7",
              "status": "affected",
              "version": "a54fc09e4cba3004443aa05979f8c678196c8226",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "a54fc09e4cba3004443aa05979f8c678196c8226",
              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
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        },
        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.83",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.23",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.11",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.2",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check\n\ntaprio_parse_tc_entry() is not correctly checking\nTCA_TAPRIO_TC_ENTRY_INDEX attribute:\n\n\tint tc; // Signed value\n\n\ttc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]);\n\tif (tc \u003e= TC_QOPT_MAX_QUEUE) {\n\t\tNL_SET_ERR_MSG_MOD(extack, \"TC entry index out of range\");\n\t\treturn -ERANGE;\n\t}\n\nsyzbot reported that it could fed arbitary negative values:\n\nUBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18\nshift exponent -2147418108 is negative\nCPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  ubsan_epilogue lib/ubsan.c:217 [inline]\n  __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386\n  taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline]\n  taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline]\n  taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877\n  taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134\n  qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355\n  tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f1b2dea3759\nCode: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004\nRBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000\nR10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340\nR13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached through an RTM_NEWQDISC message on an AF_NETLINK/NETLINK_ROUTE socket, i.e. a local syscall (sendmsg) on the local system. No remote or adjacent network input reaches taprio\u0027s qdisc configuration path.\nAC:L - The attacker fully controls both the out-of-bounds index (any value with bit 31 set) and the written value (0..dev-\u003emax_mtu), with no race, timing window, or uncontrollable memory-layout precondition; the malformed netlink message triggers the write deterministically on every attempt.\nPR:L - The only gate is netlink_net_capable(skb, CAP_NET_ADMIN), which is evaluated against the netns\u0027s user_ns, so an unprivileged user obtains it via `unshare -Urn` and then creates the required multi-queue device inside that namespace.\nUI:N - The attacker triggers the entire sequence from their own process via unshare/netlink; no action by any other user or administrator is needed.\nS:U - The out-of-bounds write corrupts kernel memory within the same kernel security authority; there is no VM, IOMMU, or hypervisor boundary crossed.\nC:H - The attacker-controlled out-of-bounds write into and below the kernel stack frame is memory corruption that can be leveraged to overwrite pointers, length fields, or return state and thereby disclose arbitrary kernel memory.\nI:H - This is a direct out-of-bounds write with attacker-chosen offset (down to -8 GiB from the stack array, 4-byte granularity) and attacker-chosen value up to 65535, which can smash the callee\u0027s saved return address and canary \u2014 a control-flow-hijack-capable primitive.\nA:H - Even without exploitation, the negative-index write corrupts the kernel stack or touches unmapped vmalloc memory, producing a stack-protector panic, KASAN report, or oops, and the UBSAN shift-out-of-bounds path is hit unconditionally."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:27:36.126Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/bd2474a45df7c11412c2587de3d4e43760531418"
        },
        {
          "url": "https://git.kernel.org/stable/c/6915b1b28fe57e92c78e664366dc61c4f15ff03b"
        },
        {
          "url": "https://git.kernel.org/stable/c/860e838fb089d652a446ced52cbdf051285b68e7"
        },
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          "url": "https://git.kernel.org/stable/c/9b720bb1a69a9f12a4a5c86b6f89386fe05ed0f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/343041b59b7810f9cdca371f445dd43b35c740b1"
        }
      ],
      "title": "net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26815",
    "datePublished": "2024-04-10T11:07:03.182Z",
    "dateReserved": "2024-02-19T14:20:24.180Z",
    "dateUpdated": "2026-08-05T11:27:36.126Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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