CVE-2022-48906 (GCVE-0-2022-48906)

Vulnerability from cvelistv5 – Published: 2024-08-22 01:30 – Updated: 2026-05-23 15:21
VLAI
Title
mptcp: Correctly set DATA_FIN timeout when number of retransmits is large
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: Correctly set DATA_FIN timeout when number of retransmits is large Syzkaller with UBSAN uncovered a scenario where a large number of DATA_FIN retransmits caused a shift-out-of-bounds in the DATA_FIN timeout calculation: ================================================================================ UBSAN: shift-out-of-bounds in net/mptcp/protocol.c:470:29 shift exponent 32 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Workqueue: events mptcp_worker Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x5a lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330 mptcp_set_datafin_timeout net/mptcp/protocol.c:470 [inline] __mptcp_retrans.cold+0x72/0x77 net/mptcp/protocol.c:2445 mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528 process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307 worker_thread+0x95/0xe10 kernel/workqueue.c:2454 kthread+0x2f4/0x3b0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> ================================================================================ This change limits the maximum timeout by limiting the size of the shift, which keeps all intermediate values in-bounds.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:34 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6848 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6477dd39e62c3a67cfa368ddc127410b4ae424c6 , < 0c3f34beb459753f9f80d0cc14c1b50ab615c631 (git)
Affected: 6477dd39e62c3a67cfa368ddc127410b4ae424c6 , < 03ae283bd71f761feae3f402668d698b393b0e79 (git)
Affected: 6477dd39e62c3a67cfa368ddc127410b4ae424c6 , < 877d11f0332cd2160e19e3313e262754c321fa36 (git)
Affected: 0af76111c2a6326e4bb56f64a6e453c6ec6dd2da (git)
Affected: 5.12.4 , < 5.13 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.27 , ≤ 5.15.* (semver)
Unaffected: 5.16.13 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: establece correctamente el tiempo de espera de DATA_FIN cuando el n\u00famero de retransmisiones es grande Syzkaller con UBSAN descubri\u00f3 un escenario en el que una gran cantidad de retransmisiones de DATA_FIN provocaban un desplazamiento fuera de los l\u00edmites en el tiempo de espera de DATA_FIN c\u00e1lculo: =================================================== ================================ UBSAN: desplazamiento fuera de los l\u00edmites en net/mptcp/protocol.c: El exponente de desplazamiento 470:29 32 es demasiado grande para el tipo \u0027unsigned int\u0027 de 32 bits CPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 01/04/2014 Cola de trabajo: eventos mptcp_worker Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack .c:106 ubsan_epilogue+0xb/0x5a lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330 mptcp_set_datafin_timeout net/mptcp/protocol.c:470 __mptcp_retrans.cold+0x7 2/0x77 net/mptcp/protocol.c:2445 mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528 Process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307 trabajador_thread+0x95/0xe10 kernel/workqueue.c:2454 kthread+0x2f4 /0x3b0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295  ====================== ==================================================== ========= Este cambio limita el tiempo de espera m\u00e1ximo al limitar el tama\u00f1o del turno, lo que mantiene todos los valores intermedios dentro de los l\u00edmites."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Correctly set DATA_FIN timeout when number of retransmits is large\n\nSyzkaller with UBSAN uncovered a scenario where a large number of\nDATA_FIN retransmits caused a shift-out-of-bounds in the DATA_FIN\ntimeout calculation:\n\n================================================================================\nUBSAN: shift-out-of-bounds in net/mptcp/protocol.c:470:29\nshift exponent 32 is too large for 32-bit type \u0027unsigned int\u0027\nCPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\nWorkqueue: events mptcp_worker\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n ubsan_epilogue+0xb/0x5a lib/ubsan.c:151\n __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330\n mptcp_set_datafin_timeout net/mptcp/protocol.c:470 [inline]\n __mptcp_retrans.cold+0x72/0x77 net/mptcp/protocol.c:2445\n mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528\n process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307\n worker_thread+0x95/0xe10 kernel/workqueue.c:2454\n kthread+0x2f4/0x3b0 kernel/kthread.c:377\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n \u003c/TASK\u003e\n================================================================================\n\nThis change limits the maximum timeout by limiting the size of the\nshift, which keeps all intermediate values in-bounds."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: establece correctamente el tiempo de espera de DATA_FIN cuando el n\u00famero de retransmisiones es grande Syzkaller con UBSAN descubri\u00f3 un escenario en el que una gran cantidad de retransmisiones de DATA_FIN provocaban un desplazamiento fuera de los l\u00edmites en el tiempo de espera de DATA_FIN c\u00e1lculo: =================================================== ================================ UBSAN: desplazamiento fuera de los l\u00edmites en net/mptcp/protocol.c: El exponente de desplazamiento 470:29 32 es demasiado grande para el tipo \u0027unsigned int\u0027 de 32 bits CPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 01/04/2014 Cola de trabajo: eventos mptcp_worker Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack .c:106 ubsan_epilogue+0xb/0x5a lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330 mptcp_set_datafin_timeout net/mptcp/protocol.c:470 __mptcp_retrans.cold+0x7 2/0x77 net/mptcp/protocol.c:2445 mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528 Process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307 trabajador_thread+0x95/0xe10 kernel/workqueue.c:2454 kthread+0x2f4 /0x3b0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295  ====================== ==================================================== ========= Este cambio limita el tiempo de espera m\u00e1ximo al limitar el tama\u00f1o del turno, lo que mantiene todos los valores intermedios dentro de los l\u00edmites."
          }
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        "lastModified": "2026-06-17T05:16:34.660",
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}



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