{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-21675", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21675", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-01-31T11:25:37.457Z", "updatedAt": "2026-05-11T21:04:16.290Z", "importedAt": "2026-10-24T01:57:29.455Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net/mlx5: Clear port select structure when fail to create", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Clear port select structure when fail to create\n\nClear the port select structure on error so no stale values left after\ndefiners are destroyed. That's because the mlx5_lag_destroy_definers()\nalways try to destroy all lag definers in the tt_map, so in the flow\nbelow lag definers get double-destroyed and cause kernel crash:\n\n mlx5_lag_port_sel_create()\n mlx5_lag_create_definers()\n mlx5_lag_create_definer() <- Failed on tt 1\n mlx5_lag_destroy_definers() <- definers[tt=0] gets destroyed\n mlx5_lag_port_sel_create()\n mlx5_lag_create_definers()\n mlx5_lag_create_definer() <- Failed on tt 0\n mlx5_lag_destroy_definers() <- definers[tt=0] gets double-destroyed\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008\n Mem abort info:\n ESR = 0x0000000096000005\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x05: level 1 translation fault\n Data abort info:\n ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000\n CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n user pgtable: 64k pages, 48-bit VAs, pgdp=0000000112ce2e00\n [0000000000000008] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000\n Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP\n Modules linked in: iptable_raw bonding ip_gre ip6_gre gre ip6_tunnel tunnel6 geneve ip6_udp_tunnel udp_tunnel ipip tunnel4 ip_tunnel rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) mlx5_ib(OE) ib_uverbs(OE) mlx5_fwctl(OE) fwctl(OE) mlx5_core(OE) mlxdevm(OE) ib_core(OE) mlxfw(OE) memtrack(OE) mlx_compat(OE) openvswitch nsh nf_conncount psample xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc netconsole overlay efi_pstore sch_fq_codel zram ip_tables crct10dif_ce qemu_fw_cfg fuse ipv6 crc_ccitt [last unloaded: mlx_compat(OE)]\n CPU: 3 UID: 0 PID: 217 Comm: kworker/u53:2 Tainted: G OE 6.11.0+ #2\n Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\n Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n Workqueue: mlx5_lag mlx5_do_bond_work [mlx5_core]\n pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : mlx5_del_flow_rules+0x24/0x2c0 [mlx5_core]\n lr : mlx5_lag_destroy_definer+0x54/0x100 [mlx5_core]\n sp : ffff800085fafb00\n x29: ffff800085fafb00 x28: ffff0000da0c8000 x27: 0000000000000000\n x26: ffff0000da0c8000 x25: ffff0000da0c8000 x24: ffff0000da0c8000\n x23: ffff0000c31f81a0 x22: 0400000000000000 x21: ffff0000da0c8000\n x20: 0000000000000000 x19: 0000000000000001 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff8b0c9350\n x14: 0000000000000000 x13: ffff800081390d18 x12: ffff800081dc3cc0\n x11: 0000000000000001 x10: 0000000000000b10 x9 : ffff80007ab7304c\n x8 : ffff0000d00711f0 x7 : 0000000000000004 x6 : 0000000000000190\n x5 : ffff00027edb3010 x4 : 0000000000000000 x3 : 0000000000000000\n x2 : ffff0000d39b8000 x1 : ffff0000d39b8000 x0 : 0400000000000000\n Call trace:\n mlx5_del_flow_rules+0x24/0x2c0 [mlx5_core]\n mlx5_lag_destroy_definer+0x54/0x100 [mlx5_core]\n mlx5_lag_destroy_definers+0xa0/0x108 [mlx5_core]\n mlx5_lag_port_sel_create+0x2d4/0x6f8 [mlx5_core]\n mlx5_activate_lag+0x60c/0x6f8 [mlx5_core]\n mlx5_do_bond_work+0x284/0x5c8 [mlx5_core]\n process_one_work+0x170/0x3e0\n worker_thread+0x2d8/0x3e0\n kthread+0x11c/0x128\n ret_from_fork+0x10/0x20\n Code: a9025bf5 aa0003f6 a90363f7 f90023f9 (f9400400)\n ---[ end trace 0000000000000000 ]---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "dc48516ec7d369c6b80bf9f14d774287b6c428aa", "status": "affected", "versionType": "git", "lessThan": "efc92a260e23cf9fafb0b6f6c9beb6f8df93fab4" }, { "version": "dc48516ec7d369c6b80bf9f14d774287b6c428aa", "status": "affected", "versionType": "git", "lessThan": "473bc285378f49aa27e5b3e95a6d5ed12995d654" }, { "version": "dc48516ec7d369c6b80bf9f14d774287b6c428aa", "status": "affected", "versionType": "git", "lessThan": "1f6e619ef2a4def555b14ac2aeb4304bfccad59b" }, { "version": "dc48516ec7d369c6b80bf9f14d774287b6c428aa", "status": "affected", "versionType": "git", "lessThan": "5641e82cb55b4ecbc6366a499300917d2f3e6790" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.16", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.16" }, { "version": "6.1.127", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.74", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }