{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-53121 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-53121 is a high-severity vulnerability in Linux kernel, published on 2 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-53121 and fix it if it is affected.\n\nWhat it is: CVE-2024-53121 is a high-severity vulnerability in Linux kernel, published on 2 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-53121 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-53121/ (Markdown: https://insights.sbomify.com/CVE-2024-53121/index.md)","id":"CVE-2024-53121","markdown":"https://insights.sbomify.com/CVE-2024-53121/index.md","name":"CVE-2024-53121","record":{"aliases":["AZL-54243","AZL-54245","BELL-CVE-2024-53121","DEBIAN-CVE-2024-53121","GHSA-gwx2-9h8p-phf8","UBUNTU-CVE-2024-53121"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel mlx5 driver can cause a system panic when deleting flow rules concurrently.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: fs, lock FTE when checking if active\n\nThe referenced commits introduced a two-step process for deleting FTEs:\n\n- Lock the FTE, delete it from hardware, set the hardware deletion function\n  to NULL and unlock the FTE.\n- Lock the parent flow group, delete the software copy of the FTE, and\n  remove it from the xarray.\n\nHowever, this approach encounters a race condition if a rule with the same\nmatch value is added simultaneously. In this scenario, fs_core may set the\nhardware deletion function to NULL prematurely, causing a panic during\nsubsequent rule deletions.\n\nTo prevent this, ensure the active flag of the FTE is checked under a lock,\nwhich will prevent the fs_core layer from attaching a new steering rule to\nan FTE that is in the process of deletion.\n\n[  438.967589] MOSHE: 2496 mlx5_del_flow_rules del_hw_func\n[  438.968205] ------------[ cut here ]------------\n[  438.968654] refcount_t: decrement hit 0; leaking memory.\n[  438.969249] WARNING: CPU: 0 PID: 8957 at lib/refcount.c:31 refcount_warn_saturate+0xfb/0x110\n[  438.970054] Modules linked in: act_mirred cls_flower act_gact sch_ingress openvswitch nsh mlx5_vdpa vringh vhost_iotlb vdpa mlx5_ib mlx5_core xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry overlay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm ib_uverbs ib_core zram zsmalloc fuse [last unloaded: cls_flower]\n[  438.973288] CPU: 0 UID: 0 PID: 8957 Comm: tc Not tainted 6.12.0-rc1+ #8\n[  438.973888] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[  438.974874] RIP: 0010:refcount_warn_saturate+0xfb/0x110\n[  438.975363] Code: 40 66 3b 82 c6 05 16 e9 4d 01 01 e8 1f 7c a0 ff 0f 0b c3 cc cc cc cc 48 c7 c7 10 66 3b 82 c6 05 fd e8 4d 01 01 e8 05 7c a0 ff \u003c0f\u003e 0b c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90\n[  438.976947] RSP: 0018:ffff888124a53610 EFLAGS: 00010286\n[  438.977446] RAX: 0000000000000000 RBX: ffff888119d56de0 RCX: 0000000000000000\n[  438.978090] RDX: ffff88852c828700 RSI: ffff88852c81b3c0 RDI: ffff88852c81b3c0\n[  438.978721] RBP: ffff888120fa0e88 R08: 0000000000000000 R09: ffff888124a534b0\n[  438.979353] R10: 0000000000000001 R11: 0000000000000001 R12: ffff888119d56de0\n[  438.979979] R13: ffff888120fa0ec0 R14: ffff888120fa0ee8 R15: ffff888119d56de0\n[  438.980607] FS:  00007fe6dcc0f800(0000) GS:ffff88852c800000(0000) knlGS:0000000000000000\n[  438.983984] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  438.984544] CR2: 00000000004275e0 CR3: 0000000186982001 CR4: 0000000000372eb0\n[  438.985205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  438.985842] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  438.986507] Call Trace:\n[  438.986799]  \u003cTASK\u003e\n[  438.987070]  ? __warn+0x7d/0x110\n[  438.987426]  ? refcount_warn_saturate+0xfb/0x110\n[  438.987877]  ? report_bug+0x17d/0x190\n[  438.988261]  ? prb_read_valid+0x17/0x20\n[  438.988659]  ? handle_bug+0x53/0x90\n[  438.989054]  ? exc_invalid_op+0x14/0x70\n[  438.989458]  ? asm_exc_invalid_op+0x16/0x20\n[  438.989883]  ? refcount_warn_saturate+0xfb/0x110\n[  438.990348]  mlx5_del_flow_rules+0x2f7/0x340 [mlx5_core]\n[  438.990932]  __mlx5_eswitch_del_rule+0x49/0x170 [mlx5_core]\n[  438.991519]  ? mlx5_lag_is_sriov+0x3c/0x50 [mlx5_core]\n[  438.992054]  ? xas_load+0x9/0xb0\n[  438.992407]  mlx5e_tc_rule_unoffload+0x45/0xe0 [mlx5_core]\n[  438.993037]  mlx5e_tc_del_fdb_flow+0x2a6/0x2e0 [mlx5_core]\n[  438.993623]  mlx5e_flow_put+0x29/0x60 [mlx5_core]\n[  438.994161]  mlx5e_delete_flower+0x261/0x390 [mlx5_core]\n[  438.994728]  tc_setup_cb_destroy+0xb9/0x190\n[  438.995150]  fl_hw_destroy_filter+0x94/0xc0 [cls_flower]\n[  438.995650]  fl_change+0x11a4/0x13c0 [cls_flower]\n[  438.996105]  tc_new_tfilter+0x347/0xbc0\n[  438.996503]  ? __\n---truncated---","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net/mlx5: fs, lock FTE when checking if active","id":"CVE-2024-53121","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2024"},"n_packages":0,"n_references":7,"next":{"headline":"mptcp: cope racing subflow creation in mptcp_rcv_space_adjust","id":"CVE-2024-53122"},"packages":[],"prev":{"headline":"net/mlx5e: CT: Fix null-ptr-deref in add rule err flow","id":"CVE-2024-53120"},"products":["Linux"],"published":"2024-12-02","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A race condition in the Linux kernel mlx5 driver can cause a system panic when deleting flow rules concurrently.","url":"https://insights.sbomify.com/CVE-2024-53121/"}