{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-37791", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.941Z", "datePublished": "2025-05-01T13:07:24.062Z", "dateUpdated": "2026-08-05T11:57:34.960Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:57:34.960Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()\n\nrpl is passed as a pointer to ethtool_cmis_module_poll(), so the correct\nsize of rpl is sizeof(*rpl) which should be just 1 byte. Using the\npointer size instead can cause stack corruption:\n\nKernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ethtool_cmis_wait_for_cond+0xf4/0x100\nCPU: 72 UID: 0 PID: 4440 Comm: kworker/72:2 Kdump: loaded Tainted: G OE 6.11.0 #24\nTainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nHardware name: Dell Inc. PowerEdge R760/04GWWM, BIOS 1.6.6 09/20/2023\nWorkqueue: events module_flash_fw_work\nCall Trace:\n \n panic+0x339/0x360\n ? ethtool_cmis_wait_for_cond+0xf4/0x100\n ? __pfx_status_success+0x10/0x10\n ? __pfx_status_fail+0x10/0x10\n __stack_chk_fail+0x10/0x10\n ethtool_cmis_wait_for_cond+0xf4/0x100\n ethtool_cmis_cdb_execute_cmd+0x1fc/0x330\n ? __pfx_status_fail+0x10/0x10\n cmis_cdb_module_features_get+0x6d/0xd0\n ethtool_cmis_cdb_init+0x8a/0xd0\n ethtool_cmis_fw_update+0x46/0x1d0\n module_flash_fw_work+0x17/0xa0\n process_one_work+0x179/0x390\n worker_thread+0x239/0x340\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xcc/0x100\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerability is triggered through the ethtool generic-netlink command ETHTOOL_MSG_MODULE_FW_FLASH_ACT issued over an AF_NETLINK socket, which requires local system access. No remote or adjacent-network packet path reaches `ethtool_cmis_module_poll()`.\nAC:L - The wrong size is used unconditionally on every poll iteration, so any firmware-flash request against a CMIS module reliably produces the 7-byte stack overwrite and stack-protector panic — no race to win and no memory-layout precondition outside the attacker's control.\nPR:L - The netlink op is gated by GENL_UNS_ADMIN_PERM, i.e. `netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)`, which an unprivileged user can obtain in their own user/network namespace via `unshare -Urn`, so this is namespace-scoped CAP_NET_ADMIN rather than real init-namespace root.\nUI:N - The attacker issues the module firmware-flash request directly and the crash occurs in the resulting kworker; no victim action, mount, or file-open by another user is needed.\nS:U - The stack corruption occurs in kernel context and its impact stays within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is an out-of-bounds kernel stack write whose contents come from an attacker-influenceable transceiver EEPROM, and corrupting saved locals/return state in `ethtool_cmis_wait_for_cond()` is leverageable toward arbitrary kernel memory disclosure on configurations without an effective stack canary.\nI:H - A 7-byte out-of-bounds stack write with externally supplied data is direct kernel memory corruption; per out-of-bounds-write guidance this is High, as adjacent stack state can be overwritten to influence control flow.\nA:H - The reported and reproducible outcome is `Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in ethtool_cmis_wait_for_cond`, an immediate unrecoverable system crash from a kernel worker thread." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ethtool/cmis_cdb.c" ], "versions": [ { "version": "a39c84d796254e6b1662ca0c46dbc313379e9291", "lessThan": "61765e1b417a23371c3735e3cddf4ad9354ed2e9", "status": "affected", "versionType": "git" }, { "version": "a39c84d796254e6b1662ca0c46dbc313379e9291", "lessThan": "7eb0a0072f966bb0b01d8b7d529d9743a7187bd1", "status": "affected", "versionType": "git" }, { "version": "a39c84d796254e6b1662ca0c46dbc313379e9291", "lessThan": "f3fdd4fba16c74697d8bc730b82fb7c1eff7fab3", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ethtool/cmis_cdb.c" ], "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.25", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.4", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.25" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.14.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/61765e1b417a23371c3735e3cddf4ad9354ed2e9" }, { "url": "https://git.kernel.org/stable/c/7eb0a0072f966bb0b01d8b7d529d9743a7187bd1" }, { "url": "https://git.kernel.org/stable/c/f3fdd4fba16c74697d8bc730b82fb7c1eff7fab3" } ], "title": "ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()", "x_generator": { "engine": "bippy-1.2.0" } } } }