{"id":"CVE-2025-21662","state":"PUBLISHED","title":"net/mlx5: Fix variable not being completed when function returns","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix variable not being completed when function returns\n\nWhen cmd_alloc_index(), fails cmd_work_handler() needs\nto complete ent->slotted before returning early.\nOtherwise the task which issued the command may hang:\n\n   mlx5_core 0000:01:00.0: cmd_work_handler:877:(pid 3880418): failed to allocate command entry\n   INFO: task kworker/13:2:4055883 blocked for more than 120 seconds.\n         Not tainted 4.19.90-25.44.v2101.ky10.aarch64 #1\n   \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n   kworker/13:2    D    0 4055883      2 0x00000228\n   Workqueue: events mlx5e_tx_dim_work [mlx5_core]\n   Call trace:\n      __switch_to+0xe8/0x150\n      __schedule+0x2a8/0x9b8\n      schedule+0x2c/0x88\n      schedule_timeout+0x204/0x478\n      wait_for_common+0x154/0x250\n      wait_for_completion+0x28/0x38\n      cmd_exec+0x7a0/0xa00 [mlx5_core]\n      mlx5_cmd_exec+0x54/0x80 [mlx5_core]\n      mlx5_core_modify_cq+0x6c/0x80 [mlx5_core]\n      mlx5_core_modify_cq_moderation+0xa0/0xb8 [mlx5_core]\n      mlx5e_tx_dim_work+0x54/0x68 [mlx5_core]\n      process_one_work+0x1b0/0x448\n      worker_thread+0x54/0x468\n      kthread+0x134/0x138\n      ret_from_fork+0x10/0x18","publishedAt":"2025-01-21T12:18:17.674Z","updatedAt":"2026-05-23T15:56:49.641Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4baae687a20ef2b82fde12de3c04461e6f2521d6","status":"affected","lessThan":"f0a2808767ac39f64b1d9a0ff865c255073cf3d4","versionType":"git"},{"version":"f9caccdd42e999b74303c9b0643300073ed5d319","status":"affected","lessThan":"229cc10284373fbe754e623b7033dca7e7470ec8","versionType":"git"},{"version":"485d65e1357123a697c591a5aeb773994b247ad7","status":"affected","lessThan":"36124081f6ffd9dfaad48830bdf106bb82a9457d","versionType":"git"},{"version":"485d65e1357123a697c591a5aeb773994b247ad7","status":"affected","lessThan":"0e2909c6bec9048f49d0c8e16887c63b50b14647","versionType":"git"},{"version":"2d0962d05c93de391ce85f6e764df895f47c8918","status":"affected","versionType":"git"},{"version":"94024332a129c6e4275569d85c0c1bfb2ae2d71b","status":"affected","versionType":"git"},{"version":"6.1.93","status":"affected","lessThan":"6.1.125","versionType":"semver"},{"version":"6.6.33","status":"affected","lessThan":"6.6.72","versionType":"semver"},{"version":"6.8.12","status":"affected","lessThan":"6.9","versionType":"semver"},{"version":"6.9.3","status":"affected","lessThan":"6.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/cmd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.1.125","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.72","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.10","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/cmd.c"]}],"references":["https://git.kernel.org/stable/c/f0a2808767ac39f64b1d9a0ff865c255073cf3d4","https://git.kernel.org/stable/c/229cc10284373fbe754e623b7033dca7e7470ec8","https://git.kernel.org/stable/c/36124081f6ffd9dfaad48830bdf106bb82a9457d","https://git.kernel.org/stable/c/0e2909c6bec9048f49d0c8e16887c63b50b14647","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21662.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21662","state":"PUBLISHED","datePublished":"2025-01-21T12:18:17.674Z","dateUpdated":"2026-05-23T15:56:49.641Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.732Z"},"containers":{"cna":{"title":"net/mlx5: Fix variable not being completed when function returns","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix variable not being completed when function returns\n\nWhen cmd_alloc_index(), fails cmd_work_handler() needs\nto complete ent->slotted before returning early.\nOtherwise the task which issued the command may hang:\n\n   mlx5_core 0000:01:00.0: cmd_work_handler:877:(pid 3880418): failed to allocate command entry\n   INFO: task kworker/13:2:4055883 blocked for more than 120 seconds.\n         Not tainted 4.19.90-25.44.v2101.ky10.aarch64 #1\n   \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n   kworker/13:2    D    0 4055883      2 0x00000228\n   Workqueue: events mlx5e_tx_dim_work [mlx5_core]\n   Call trace:\n      __switch_to+0xe8/0x150\n      __schedule+0x2a8/0x9b8\n      schedule+0x2c/0x88\n      schedule_timeout+0x204/0x478\n      wait_for_common+0x154/0x250\n      wait_for_completion+0x28/0x38\n      cmd_exec+0x7a0/0xa00 [mlx5_core]\n      mlx5_cmd_exec+0x54/0x80 [mlx5_core]\n      mlx5_core_modify_cq+0x6c/0x80 [mlx5_core]\n      mlx5_core_modify_cq_moderation+0xa0/0xb8 [mlx5_core]\n      mlx5e_tx_dim_work+0x54/0x68 [mlx5_core]\n      process_one_work+0x1b0/0x448\n      worker_thread+0x54/0x468\n      kthread+0x134/0x138\n      ret_from_fork+0x10/0x18"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4baae687a20ef2b82fde12de3c04461e6f2521d6","status":"affected","lessThan":"f0a2808767ac39f64b1d9a0ff865c255073cf3d4","versionType":"git"},{"version":"f9caccdd42e999b74303c9b0643300073ed5d319","status":"affected","lessThan":"229cc10284373fbe754e623b7033dca7e7470ec8","versionType":"git"},{"version":"485d65e1357123a697c591a5aeb773994b247ad7","status":"affected","lessThan":"36124081f6ffd9dfaad48830bdf106bb82a9457d","versionType":"git"},{"version":"485d65e1357123a697c591a5aeb773994b247ad7","status":"affected","lessThan":"0e2909c6bec9048f49d0c8e16887c63b50b14647","versionType":"git"},{"version":"2d0962d05c93de391ce85f6e764df895f47c8918","status":"affected","versionType":"git"},{"version":"94024332a129c6e4275569d85c0c1bfb2ae2d71b","status":"affected","versionType":"git"},{"version":"6.1.93","status":"affected","lessThan":"6.1.125","versionType":"semver"},{"version":"6.6.33","status":"affected","lessThan":"6.6.72","versionType":"semver"},{"version":"6.8.12","status":"affected","lessThan":"6.9","versionType":"semver"},{"version":"6.9.3","status":"affected","lessThan":"6.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/cmd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.1.125","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.72","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.10","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/cmd.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f0a2808767ac39f64b1d9a0ff865c255073cf3d4"},{"url":"https://git.kernel.org/stable/c/229cc10284373fbe754e623b7033dca7e7470ec8"},{"url":"https://git.kernel.org/stable/c/36124081f6ffd9dfaad48830bdf106bb82a9457d"},{"url":"https://git.kernel.org/stable/c/0e2909c6bec9048f49d0c8e16887c63b50b14647"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:56:49.641Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.93","versionEndExcluding":"6.1.125"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.33","versionEndExcluding":"6.6.72"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T20:58:37.583Z"}}]}}}