{"id":"AZL-64490","summary":"CVE-2025-38161 affecting package kernel for versions less than 6.6.96.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix error flow upon firmware failure for RQ destruction\n\nUpon RQ destruction if the firmware command fails which is the\nlast resource to be destroyed some SW resources were already cleaned\nregardless of the failure.\n\nNow properly rollback the object to its original state upon such failure.\n\nIn order to avoid a use-after free in case someone tries to destroy the\nobject again, which results in the following kernel trace:\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 0 PID: 37589 at lib/refcount.c:28 refcount_warn_saturate+0xf4/0x148\nModules linked in: rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) mlx5_ib(OE) rfkill mlx5_core(OE) mlxdevm(OE) ib_uverbs(OE) ib_core(OE) psample mlxfw(OE) mlx_compat(OE) macsec tls pci_hyperv_intf sunrpc vfat fat virtio_net net_failover failover fuse loop nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vmw_vmci vsock xfs crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_console virtio_gpu virtio_blk virtio_dma_buf virtio_mmio dm_mirror dm_region_hash dm_log dm_mod xpmem(OE)\nCPU: 0 UID: 0 PID: 37589 Comm: python3 Kdump: loaded Tainted: G           OE     -------  ---  6.12.0-54.el10.aarch64 #1\nTainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nHardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\npstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : refcount_warn_saturate+0xf4/0x148\nlr : refcount_warn_saturate+0xf4/0x148\nsp : ffff80008b81b7e0\nx29: ffff80008b81b7e0 x28: ffff000133d51600 x27: 0000000000000001\nx26: 0000000000000000 x25: 00000000ffffffea x24: ffff00010ae80f00\nx23: ffff00010ae80f80 x22: ffff0000c66e5d08 x21: 0000000000000000\nx20: ffff0000c66e0000 x19: ffff00010ae80340 x18: 0000000000000006\nx17: 0000000000000000 x16: 0000000000000020 x15: ffff80008b81b37f\nx14: 0000000000000000 x13: 2e656572662d7265 x12: ffff80008283ef78\nx11: ffff80008257efd0 x10: ffff80008283efd0 x9 : ffff80008021ed90\nx8 : 0000000000000001 x7 : 00000000000bffe8 x6 : c0000000ffff7fff\nx5 : ffff0001fb8e3408 x4 : 0000000000000000 x3 : ffff800179993000\nx2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000133d51600\nCall trace:\n refcount_warn_saturate+0xf4/0x148\n mlx5_core_put_rsc+0x88/0xa0 [mlx5_ib]\n mlx5_core_destroy_rq_tracked+0x64/0x98 [mlx5_ib]\n mlx5_ib_destroy_wq+0x34/0x80 [mlx5_ib]\n ib_destroy_wq_user+0x30/0xc0 [ib_core]\n uverbs_free_wq+0x28/0x58 [ib_uverbs]\n destroy_hw_idr_uobject+0x34/0x78 [ib_uverbs]\n uverbs_destroy_uobject+0x48/0x240 [ib_uverbs]\n __uverbs_cleanup_ufile+0xd4/0x1a8 [ib_uverbs]\n uverbs_destroy_ufile_hw+0x48/0x120 [ib_uverbs]\n ib_uverbs_close+0x2c/0x100 [ib_uverbs]\n __fput+0xd8/0x2f0\n __fput_sync+0x50/0x70\n __arm64_sys_close+0x40/0x90\n invoke_syscall.constprop.0+0x74/0xd0\n do_el0_svc+0x48/0xe8\n el0_svc+0x44/0x1d0\n el0t_64_sync_handler+0x120/0x130\n el0t_64_sync+0x1a4/0x1a8","modified":"2026-04-01T05:20:49.005798Z","published":"2025-07-03T09:15:31Z","upstream":["CVE-2025-38161"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38161"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.96.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64490.json"}}],"schema_version":"1.7.5"}