CVE-2022-48830 (GCVE-0-2022-48830)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:44 – Updated: 2026-08-05 08:52
VLAI
Title
can: isotp: fix potential CAN frame reception race in isotp_rcv()
Summary
In the Linux kernel, the following vulnerability has been resolved: can: isotp: fix potential CAN frame reception race in isotp_rcv() When receiving a CAN frame the current code logic does not consider concurrently receiving processes which do not show up in real world usage. Ziyang Xuan writes: The following syz problem is one of the scenarios. so->rx.len is changed by isotp_rcv_ff() during isotp_rcv_cf(), so->rx.len equals 0 before alloc_skb() and equals 4096 after alloc_skb(). That will trigger skb_over_panic() in skb_put(). ======================================================= CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc8-syzkaller #0 RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:113 Call Trace: <TASK> skb_over_panic net/core/skbuff.c:118 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1990 isotp_rcv_cf net/can/isotp.c:570 [inline] isotp_rcv+0xa38/0x1e30 net/can/isotp.c:668 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x445/0x8d0 net/can/af_can.c:635 can_receive+0x31d/0x580 net/can/af_can.c:665 can_rcv+0x120/0x1c0 net/can/af_can.c:696 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5465 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579 Therefore we make sure the state changes and data structures stay consistent at CAN frame reception time by adding a spin_lock in isotp_rcv(). This fixes the issue reported by syzkaller but does not affect real world operation.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/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 16:57 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < 7b53d2204ce79b27a878074a77d64f40ec21dbca (git)
Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3 (git)
Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < 5b068f33bc8acfcfd5ea7992a2dafb30d89bad30 (git)
Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < 7c759040c1dd03954f650f147ae7175476d51314 (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.101 , ≤ 5.10.* (semver)
Unaffected: 5.15.24 , ≤ 5.15.* (semver)
Unaffected: 5.16.10 , ≤ 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: can: isotp: corrige una posible ejecuci\u00f3n de recepci\u00f3n de tramas CAN en isotp_rcv() Al recibir una trama CAN, la l\u00f3gica del c\u00f3digo actual no considera la recepci\u00f3n simult\u00e1nea de procesos que no aparecen en el uso en el mundo real. Ziyang Xuan escribe: El siguiente problema syz es uno de los escenarios. so-\u0026gt;rx.len es cambiado por isotp_rcv_ff() durante isotp_rcv_cf(), so-\u0026gt;rx.len es igual a 0 antes de alloc_skb() y es igual a 4096 despu\u00e9s de alloc_skb(). Eso activar\u00e1 skb_over_panic() en skb_put(). ==================================================== ===== CPU: 1 PID: 19 Comm: ksoftirqd/1 No contaminado 5.16.0-rc8-syzkaller #0 RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:113 Seguimiento de llamadas:  skb_over_panic net/core/skbuff.c:118 [en l\u00ednea] skb_put.cold+0x24/0x24 net/core/skbuff.c:1990 isotp_rcv_cf net/can/isotp.c:570 [en l\u00ednea] isotp_rcv+0xa38/0x1e30 net/ can/isotp.c:668 entregar net/can/af_can.c:574 [en l\u00ednea] can_rcv_filter+0x445/0x8d0 net/can/af_can.c:635 can_receive+0x31d/0x580 net/can/af_can.c:665 can_rcv+ 0x120/0x1c0 net/can/af_can.c:696 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5465 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579 Por lo tanto, nos aseguramos de que los cambios de estado y las estructuras de datos mantenga la coherencia en el momento de recepci\u00f3n de la trama CAN agregando un spin_lock en isotp_rcv(). Esto soluciona el problema informado por syzkaller pero no afecta el funcionamiento en el mundo real."
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      "title": "kernel: can: isotp: fix potential CAN frame reception race in isotp_rcv()",
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}



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