{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-41046", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.625Z", "datePublished": "2024-07-29T14:32:03.686Z", "dateUpdated": "2026-08-05T11:34:58.198Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:34:58.198Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: lantiq_etop: fix double free in detach\n\nThe number of the currently released descriptor is never incremented\nwhich results in the same skb being released multiple times." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The teardown path is reached via `ndo_tx_timeout`, which `dev_watchdog()` fires when the TX queue stays stopped for 10 s with carrier up — inducible by an attacker on the same Ethernet segment via sustained 802.3x PAUSE flooding or link-level stalling of the 100 Mbit MAC on these Lantiq CPE devices. The stall mechanism is link-local L2 and does not survive a router hop, so Adjacent rather than Network.\nAC:L - The attacker fully controls the stalling condition and can simply keep transmitting PAUSE frames past the 10-second watchdog window, and the buggy loop then unconditionally frees the same skb 192 times with no race or layout precondition. Heap grooming of the freed skb is also attacker-controlled since the same interface is receiving their traffic.\nPR:N - No account, credential, or authentication on the target is needed — an unauthenticated peer on the link segment only has to emit flow-control/traffic frames to trip the transmit watchdog. No local access or capability is involved on this path.\nUI:N - The watchdog timer fires automatically from `dev_watchdog()` and calls `ltq_etop_tx_timeout()` with no administrator or user action. No interface down/up, unbind, or module unload by a legitimate user is required.\nS:U - The double free corrupts kernel slab state within the same kernel security authority; no VM, hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The 191 redundant frees operate on freed sk_buff memory, dereferencing `skb->head`/`skb->end` to reach `skb_shinfo()` and re-inserting the object into the skb slab freelist, producing overlapping allocations that let an attacker read reallocated kernel heap contents (other packets, credentials, kernel pointers). Per kernel guidance, use-after-free/double-free is scored High confidentiality.\nI:H - Freeing the same object 192 times corrupts the `skbuff_cache` freelist into aliased allocations (arbitrary write primitive) and drives an indirect call through the attacker-influenceable `skb->destructor` field in `skb_release_head_state()`, plus a controlled `skb->head` free and page refcount decrements. This is a control-flow-hijack-capable memory corruption, not a bounded modification.\nA:H - Even without exploitation the 191-fold double free reliably triggers slab corruption, list poisoning, and kernel panic/oops, and the DMA engine may still have the freed buffer mapped. The trigger is repeatable at will by the adjacent attacker." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/lantiq_etop.c" ], "versions": [ { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "1a2db00a554cfda57c397cce79b2804bf9633fec", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "907443174e76b854d28024bd079f0e53b94dc9a1", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "22b16618a80858b3a9d607708444426948cc4ae1", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "69ad5fa0ce7c548262e0770fc2b726fe7ab4f156", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "c2b66e2b3939af63699e4a4bd25a8ac4a9b1d1b3", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "9d23909ae041761cb2aa0c3cb1748598d8b6bc54", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "84aaaa796a19195fc59290154fef9aeb1fba964f", "status": "affected", "versionType": "git" }, { "version": "504d4721ee8e432af4b5f196a08af38bc4dac5fe", "lessThan": "e1533b6319ab9c3a97dad314dd88b3783bc41b69", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/lantiq_etop.c" ], "versions": [ { "version": "3.0", "status": "affected" }, { "version": "0", "lessThan": "3.0", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.318", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.280", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.222", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.163", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.100", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.41", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.10", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "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": "3.0", "versionEndExcluding": "4.19.318" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "5.4.280" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "5.10.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "5.15.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.1.100" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.6.41" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.9.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1a2db00a554cfda57c397cce79b2804bf9633fec" }, { "url": "https://git.kernel.org/stable/c/907443174e76b854d28024bd079f0e53b94dc9a1" }, { "url": "https://git.kernel.org/stable/c/22b16618a80858b3a9d607708444426948cc4ae1" }, { "url": "https://git.kernel.org/stable/c/69ad5fa0ce7c548262e0770fc2b726fe7ab4f156" }, { "url": "https://git.kernel.org/stable/c/c2b66e2b3939af63699e4a4bd25a8ac4a9b1d1b3" }, { "url": "https://git.kernel.org/stable/c/9d23909ae041761cb2aa0c3cb1748598d8b6bc54" }, { "url": "https://git.kernel.org/stable/c/84aaaa796a19195fc59290154fef9aeb1fba964f" }, { "url": "https://git.kernel.org/stable/c/e1533b6319ab9c3a97dad314dd88b3783bc41b69" } ], "title": "net: ethernet: lantiq_etop: fix double free in detach", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/1a2db00a554cfda57c397cce79b2804bf9633fec", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/907443174e76b854d28024bd079f0e53b94dc9a1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/22b16618a80858b3a9d607708444426948cc4ae1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/69ad5fa0ce7c548262e0770fc2b726fe7ab4f156", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c2b66e2b3939af63699e4a4bd25a8ac4a9b1d1b3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9d23909ae041761cb2aa0c3cb1748598d8b6bc54", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/84aaaa796a19195fc59290154fef9aeb1fba964f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e1533b6319ab9c3a97dad314dd88b3783bc41b69", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:59:45.501Z" } }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-41046", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:22:57.535074Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:02.313Z" } } ] } }