CVE-2025-37867 Information

Description

In the Linux kernel the following vulnerability has been resolved:

RDMA/core: Silence oversized kvmalloc() warning

syzkaller triggered an oversized kvmalloc() warning. Silence it by adding __GFP_NOWARN.

syzkaller log: WARNING: CPU: 7 PID: 518 at mm/util.c:665 __kvmalloc_node_noprof+0x175/0x180 CPU: 7 UID: 0 PID: 518 Comm: c_repro Not tainted 6.11.0-rc6+ 6 Hardware name: QEMU Standard PC (i440FX + PIIX 1996) BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:__kvmalloc_node_noprof+0x175/0x180 RSP: 0018:ffffc90001e67c10 EFLAGS: 00010246 RAX: 0000000000000100 RBX: 0000000000000400 RCX: ffffffff8149d46b RDX: 0000000000000000 RSI: ffff8881030fae80 RDI: 0000000000000002 RBP: 000000712c800000 R08: 0000000000000100 R09: 0000000000000000 R10: ffffc90001e67c10 R11: 0030ae0601000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000 FS: 00007fde79159740(0000) GS:ffff88813bdc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 0000000105eb4005 CR4: 00000000003706b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ib_umem_odp_get+0x1f6/0x390 mlx5_ib_reg_user_mr+0x1e8/0x450 ib_uverbs_reg_mr+0x28b/0x440 ib_uverbs_write+0x7d3/0xa30 vfs_write+0x1ac/0x6c0 ksys_write+0x134/0x170 ? __sanitizer_cov_trace_pc+0x1c/0x50 do_syscall_64+0x50/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e

Reference

https://git.kernel.org/stable/c/0d81bb58a203ad5f4044dc18cfbc230c194f650a https://git.kernel.org/stable/c/6c588e9afbab240c921f936cb676dac72e2e2b66 https://git.kernel.org/stable/c/791daf8240cedf27af8794038ae1d32ef643bce6 https://git.kernel.org/stable/c/9a0e6f15029e1a8a21e40f06fd05aa52b7f063de https://git.kernel.org/stable/c/ae470d06320dea4002d441784d691f0a26b4322d https://git.kernel.org/stable/c/f476eba25fdf70faa7b19a3e0fb00e65c5b53106 https://git.kernel.org/stable/c/f94ac90ce7bd6f9266ad0d99044ed86e8d1416c1