CVE-2024-45001 (GCVE-0-2024-45001)

Vulnerability from cvelistv5 – Published: 2024-09-04 19:54 – Updated: 2026-05-11 20:33
VLAI
Title
net: mana: Fix RX buf alloc_size alignment and atomic op panic
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix RX buf alloc_size alignment and atomic op panic The MANA driver's RX buffer alloc_size is passed into napi_build_skb() to create SKB. skb_shinfo(skb) is located at the end of skb, and its alignment is affected by the alloc_size passed into napi_build_skb(). The size needs to be aligned properly for better performance and atomic operations. Otherwise, on ARM64 CPU, for certain MTU settings like 4000, atomic operations may panic on the skb_shinfo(skb)->dataref due to alignment fault. To fix this bug, add proper alignment to the alloc_size calculation. Sample panic info: [ 253.298819] Unable to handle kernel paging request at virtual address ffff000129ba5cce [ 253.300900] Mem abort info: [ 253.301760] ESR = 0x0000000096000021 [ 253.302825] EC = 0x25: DABT (current EL), IL = 32 bits [ 253.304268] SET = 0, FnV = 0 [ 253.305172] EA = 0, S1PTW = 0 [ 253.306103] FSC = 0x21: alignment fault Call trace: __skb_clone+0xfc/0x198 skb_clone+0x78/0xe0 raw6_local_deliver+0xfc/0x228 ip6_protocol_deliver_rcu+0x80/0x500 ip6_input_finish+0x48/0x80 ip6_input+0x48/0xc0 ip6_sublist_rcv_finish+0x50/0x78 ip6_sublist_rcv+0x1cc/0x2b8 ipv6_list_rcv+0x100/0x150 __netif_receive_skb_list_core+0x180/0x220 netif_receive_skb_list_internal+0x198/0x2a8 __napi_poll+0x138/0x250 net_rx_action+0x148/0x330 handle_softirqs+0x12c/0x3a0
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 80f6215b450eb8e92d8b1f117abf5ecf867f963e , < 65f20b174ec0172f2d6bcfd8533ab9c9e7e347fa (git)
Affected: 80f6215b450eb8e92d8b1f117abf5ecf867f963e , < e6bea6a45f8a401f3d5a430bc81814f0cc8848cf (git)
Affected: 80f6215b450eb8e92d8b1f117abf5ecf867f963e , < 32316f676b4ee87c0404d333d248ccf777f739bc (git)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.48 , ≤ 6.6.* (semver)
Unaffected: 6.10.7 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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The size needs\\nto be aligned properly for better performance and atomic operations.\\nOtherwise, on ARM64 CPU, for certain MTU settings like 4000, atomic\\noperations may panic on the skb_shinfo(skb)-\u003edataref due to alignment fault.\\n\\nTo fix this bug, add proper alignment to the alloc_size calculation.\\n\\nSample panic info:\\n[  253.298819] Unable to handle kernel paging request at virtual address ffff000129ba5cce\\n[  253.300900] Mem abort info:\\n[  253.301760]   ESR = 0x0000000096000021\\n[  253.302825]   EC = 0x25: DABT (current EL), IL = 32 bits\\n[  253.304268]   SET = 0, FnV = 0\\n[  253.305172]   EA = 0, S1PTW = 0\\n[  253.306103]   FSC = 0x21: alignment fault\\nCall trace:\\n __skb_clone+0xfc/0x198\\n skb_clone+0x78/0xe0\\n raw6_local_deliver+0xfc/0x228\\n ip6_protocol_deliver_rcu+0x80/0x500\\n ip6_input_finish+0x48/0x80\\n ip6_input+0x48/0xc0\\n ip6_sublist_rcv_finish+0x50/0x78\\n ip6_sublist_rcv+0x1cc/0x2b8\\n ipv6_list_rcv+0x100/0x150\\n __netif_receive_skb_list_core+0x180/0x220\\n netif_receive_skb_list_internal+0x198/0x2a8\\n __napi_poll+0x138/0x250\\n net_rx_action+0x148/0x330\\n handle_softirqs+0x12c/0x3a0\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mana: Fix RX buf alloc_size adjustment and atomic op panic El b\u00fafer RX alloc_size del controlador MANA se pasa a napi_build_skb() para crear SKB. skb_shinfo(skb) se encuentra al final de skb, y su alineaci\u00f3n se ve afectada por el alloc_size pasado a napi_build_skb(). 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  • 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.