{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-46755", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-11T15:12:18.270Z", "datePublished": "2024-09-18T07:12:14.820Z", "dateUpdated": "2026-08-05T11:38:23.495Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:38:23.495Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()\n\nmwifiex_get_priv_by_id() returns the priv pointer corresponding to\nthe bss_num and bss_type, but without checking if the priv is actually\ncurrently in use.\nUnused priv pointers do not have a wiphy attached to them which can\nlead to NULL pointer dereferences further down the callstack. Fix\nthis by returning only used priv pointers which have priv->bss_mode\nset to something else than NL80211_IFTYPE_UNSPECIFIED.\n\nSaid NULL pointer dereference happened when an Accesspoint was started\nwith wpa_supplicant -i mlan0 with this config:\n\nnetwork={\n ssid=\"somessid\"\n mode=2\n frequency=2412\n key_mgmt=WPA-PSK WPA-PSK-SHA256\n proto=RSN\n group=CCMP\n pairwise=CCMP\n psk=\"12345678\"\n}\n\nWhen waiting for the AP to be established, interrupting wpa_supplicant\nwith and starting it again this happens:\n\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140\n| Mem abort info:\n| ESR = 0x0000000096000004\n| EC = 0x25: DABT (current EL), IL = 32 bits\n| SET = 0, FnV = 0\n| EA = 0, S1PTW = 0\n| FSC = 0x04: level 0 translation fault\n| Data abort info:\n| ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n| CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n| GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000\n| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio\n+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs\n+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6\n| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18\n| Hardware name: somemachine (DT)\n| Workqueue: events sdio_irq_work\n| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]\n| sp : ffff8000818b3a70\n| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004\n| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9\n| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000\n| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000\n| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517\n| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1\n| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157\n| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124\n| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000\n| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000\n| Call trace:\n| mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]\n| mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]\n| mwifiex_process_sta_event+0x298/0xf0c [mwifiex]\n| mwifiex_process_event+0x110/0x238 [mwifiex]\n| mwifiex_main_process+0x428/0xa44 [mwifiex]\n| mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]\n| process_sdio_pending_irqs+0x64/0x1b8\n| sdio_irq_work+0x4c/0x7c\n| process_one_work+0x148/0x2a0\n| worker_thread+0x2fc/0x40c\n| kthread+0x110/0x114\n| ret_from_fork+0x10/0x20\n| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)\n| ---[ end trace 0000000000000000 ]---" } ], "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 vulnerable dispatch is driven by data arriving from the wireless medium — ext-scan-report events generated from nearby beacons/probe responses and RX data frames whose RXPD `bss_num`/`bss_type` select the priv — so an attacker within 802.11 range of the mwifiex device supplies the triggering input. This matches the adjacent-network treatment used for other frame-driven mwifiex/mac80211 defects.\nAC:L - No race must be won: the zero-initialized decoy privs permanently shadow `(bss_num 0, bss_type STA)` on any device operating in AP/hotspot mode, and privs left behind by `mwifiex_del_virtual_intf()` keep matching their old BSS id indefinitely, so a steady stream of frames/events reliably lands on an unused priv.\nPR:N - The attacker needs no credentials or association on the target — unassociated beacons/probe responses feed the scan-result event path and received frames feed the RX data path, both of which are processed before any authentication state matters.\nUI:N - No victim action is required; the stale-priv condition is the device's steady-state configuration in AP/hotspot deployments and after any routine interface teardown, and the driver processes the offending events and frames autonomously in a workqueue/IRQ context.\nS:U - Both the flawed lookup and its consequences are confined to the kernel's own security authority within the mwifiex driver; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A stale priv causes reads through dangling and never-initialized pointers, and on a deleted interface the freed `priv->hist_data` object continues to be accessed (including read back via the debugfs histogram after reallocation), giving disclosure of reused heap contents; per use-after-free treatment this is High.\nI:H - `mwifiex_hist_data_add()`/`mwifiex_hist_data_set()` perform `atomic_inc()` into the freed `hist_data` buffer at offsets derived from the received frame's `rx_rate`/`snr`/`nf` fields (with `rssi = snr - nflr` able to index past the arrays), yielding an out-of-bounds write primitive on freed heap memory that is exploitable for control-flow influence.\nA:H - The commit documents a reproducible kernel oops — NULL dereference of `priv->wdev.wiphy->bands[]` in `mwifiex_get_cfp()` — and the same stale priv also NULL-derefs `priv->netdev` in `eth_type_trans()`, producing a kernel panic." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/marvell/mwifiex/main.h" ], "versions": [ { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "a12cf97cbefa139ef8d95081f2ea047cbbd74b7a", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "d834433ff313838a259bb6607055ece87b895b66", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "9813770f25855b866b8ead8155b8806b2db70f6d", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "cb67b2e51b75f1a17bee7599c8161b96e1808a70", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "1a05d8d02cfa3540ea5dbd6b39446bd3f515521f", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "c2618dcb26c7211342b54520b5b148c0d3471c8a", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "c16916dd6c16fa7e13ca3923eb6b9f50d848ad03", "status": "affected", "versionType": "git" }, { "version": "93a1df48d224296fb527d32fbec4d5162828feb4", "lessThan": "c145eea2f75ff7949392aebecf7ef0a81c1f6c14", "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/wireless/marvell/mwifiex/main.h" ], "versions": [ { "version": "3.2", "status": "affected" }, { "version": "0", "lessThan": "3.2", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.322", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.284", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.226", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.167", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.110", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.51", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.10", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "3.2", "versionEndExcluding": "4.19.322" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.4.284" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.10.226" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.15.167" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.1.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.6.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.10.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7a" }, { "url": "https://git.kernel.org/stable/c/d834433ff313838a259bb6607055ece87b895b66" }, { "url": "https://git.kernel.org/stable/c/9813770f25855b866b8ead8155b8806b2db70f6d" }, { "url": "https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70" }, { "url": "https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521f" }, { "url": "https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8a" }, { "url": "https://git.kernel.org/stable/c/c16916dd6c16fa7e13ca3923eb6b9f50d848ad03" }, { "url": "https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14" } ], "title": "wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-09-29T14:46:11.339320Z", "id": "CVE-2024-46755", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T15:51:59.794Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:17:50.652Z" } } ] } }