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

Vulnerability from cvelistv5 – Published: 2024-04-10 11:07 – Updated: 2025-05-04 08:57
VLAI?
Title
net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted 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)
Create a notification for this product.
    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)
Create a notification for this product.
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    "vulnrichment": {
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// 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\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:48:01.156Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26815\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:48:01.156Z\", \"dateReserved\": \"2024-02-19T14:20:24.180Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-10T11:07:03.182Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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  • 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.



Detection rules are retrieved from Rulezet.