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CVE-2025-38402— idpf: return 0 size for RSS key if not supported

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于返回错误大小可能导致分配失败。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.16% · P5

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< 018ff57fd79c38be989b8b3248bbe69bcfb77160 affected
02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< 326e384ee7acbebf0541ac064ac7a4dd1f1dde1d affected
02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< f77bf1ebf8ff6301ccdbc346f7b52db928f9cbf8 affected
6.7 affected
< 6.7 unaffected
6.12.37≤ 6.12.* unaffected
6.15.6≤ 6.15.* unaffected
6.16≤ * unaffected
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I. Basic Information for CVE-2025-38402

Vulnerability Information
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Vulnerability Title
idpf: return 0 size for RSS key if not supported
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: idpf: return 0 size for RSS key if not supported Returning -EOPNOTSUPP from function returning u32 is leading to cast and invalid size value as a result. -EOPNOTSUPP as a size probably will lead to allocation fail. Command: ethtool -x eth0 It is visible on all devices that don't have RSS caps set. [ 136.615917] Call Trace: [ 136.615921] <TASK> [ 136.615927] ? __warn+0x89/0x130 [ 136.615942] ? __alloc_frozen_pages_noprof+0x322/0x330 [ 136.615953] ? report_bug+0x164/0x190 [ 136.615968] ? handle_bug+0x58/0x90 [ 136.615979] ? exc_invalid_op+0x17/0x70 [ 136.615987] ? asm_exc_invalid_op+0x1a/0x20 [ 136.616001] ? rss_prepare_get.constprop.0+0xb9/0x170 [ 136.616016] ? __alloc_frozen_pages_noprof+0x322/0x330 [ 136.616028] __alloc_pages_noprof+0xe/0x20 [ 136.616038] ___kmalloc_large_node+0x80/0x110 [ 136.616072] __kmalloc_large_node_noprof+0x1d/0xa0 [ 136.616081] __kmalloc_noprof+0x32c/0x4c0 [ 136.616098] ? rss_prepare_get.constprop.0+0xb9/0x170 [ 136.616105] rss_prepare_get.constprop.0+0xb9/0x170 [ 136.616114] ethnl_default_doit+0x107/0x3d0 [ 136.616131] genl_family_rcv_msg_doit+0x100/0x160 [ 136.616147] genl_rcv_msg+0x1b8/0x2c0 [ 136.616156] ? __pfx_ethnl_default_doit+0x10/0x10 [ 136.616168] ? __pfx_genl_rcv_msg+0x10/0x10 [ 136.616176] netlink_rcv_skb+0x58/0x110 [ 136.616186] genl_rcv+0x28/0x40 [ 136.616195] netlink_unicast+0x19b/0x290 [ 136.616206] netlink_sendmsg+0x222/0x490 [ 136.616215] __sys_sendto+0x1fd/0x210 [ 136.616233] __x64_sys_sendto+0x24/0x30 [ 136.616242] do_syscall_64+0x82/0x160 [ 136.616252] ? __sys_recvmsg+0x83/0xe0 [ 136.616265] ? syscall_exit_to_user_mode+0x10/0x210 [ 136.616275] ? do_syscall_64+0x8e/0x160 [ 136.616282] ? __count_memcg_events+0xa1/0x130 [ 136.616295] ? count_memcg_events.constprop.0+0x1a/0x30 [ 136.616306] ? handle_mm_fault+0xae/0x2d0 [ 136.616319] ? do_user_addr_fault+0x379/0x670 [ 136.616328] ? clear_bhb_loop+0x45/0xa0 [ 136.616340] ? clear_bhb_loop+0x45/0xa0 [ 136.616349] ? clear_bhb_loop+0x45/0xa0 [ 136.616359] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 136.616369] RIP: 0033:0x7fd30ba7b047 [ 136.616376] Code: 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 80 3d bd d5 0c 00 00 41 89 ca 74 10 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 71 c3 55 48 83 ec 30 44 89 4c 24 2c 4c 89 44 [ 136.616381] RSP: 002b:00007ffde1796d68 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 136.616388] RAX: ffffffffffffffda RBX: 000055d7bd89f2a0 RCX: 00007fd30ba7b047 [ 136.616392] RDX: 0000000000000028 RSI: 000055d7bd89f3b0 RDI: 0000000000000003 [ 136.616396] RBP: 00007ffde1796e10 R08: 00007fd30bb4e200 R09: 000000000000000c [ 136.616399] R10: 0000000000000000 R11: 0000000000000202 R12: 000055d7bd89f340 [ 136.616403] R13: 000055d7bd89f3b0 R14: 000055d78943f200 R15: 0000000000000000
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于返回错误大小可能导致分配失败。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb ~ 018ff57fd79c38be989b8b3248bbe69bcfb77160 -
Linux Linux 6.7 -

II. Public POCs for CVE-2025-38402

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III. Intelligence Information for CVE-2025-38402

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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total

CVE-2025-38429 10.0 CRITICAL bus: mhi: ep: Update read pointer only after buffer is written
CVE-2025-38430 9.8 CRITICAL nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request
CVE-2025-38411 9.8 CRITICAL netfs: Fix double put of request
CVE-2025-38439 9.8 CRITICAL bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT
CVE-2025-38365 9.1 CRITICAL btrfs: fix a race between renames and directory logging
CVE-2025-38437 8.8 HIGH ksmbd: fix potential use-after-free in oplock/lease break ack
CVE-2025-38377 8.8 HIGH rose: fix dangling neighbour pointers in rose_rt_device_down()
CVE-2025-38367 8.8 HIGH LoongArch: KVM: Avoid overflow with array index
CVE-2025-38395 8.4 HIGH regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods
CVE-2025-38375 8.4 HIGH virtio-net: ensure the received length does not exceed allocated size
CVE-2025-38435 7.8 HIGH riscv: vector: Fix context save/restore with xtheadvector
CVE-2025-38398 7.8 HIGH spi: spi-qpic-snand: reallocate BAM transactions
CVE-2025-38434 7.8 HIGH Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
CVE-2025-38449 7.8 HIGH drm/gem: Acquire references on GEM handles for framebuffers
CVE-2025-38382 7.8 HIGH btrfs: fix iteration of extrefs during log replay
CVE-2025-38447 7.8 HIGH mm/rmap: fix potential out-of-bounds page table access during batched unmap
CVE-2025-38440 7.8 HIGH net/mlx5e: Fix race between DIM disable and net_dim()
CVE-2025-38408 7.8 HIGH genirq/irq_sim: Initialize work context pointers properly
CVE-2025-38424 7.8 HIGH perf: Fix sample vs do_exit()
CVE-2025-38396 7.8 HIGH fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass

Showing top 20 of 114 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38402

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