[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2021-47402":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T08:53:30.047Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":20,"aliases":21,"duplicate_of":9,"upstream":22,"downstream":23,"duplicates":112,"related":113,"reserved_at":9,"published_at":156,"modified_at":157,"state":158,"summary":159,"references_raw":168,"kevs":187,"epss":188,"epss_history":191,"metrics":435,"affected":441},"CVE-2021-47402","In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: flower: protect fl_walk() with rcu\n\nPatch that refactored fl_walk() to use idr_for_each_entry_continue_ul()\nalso removed rcu protection of individual filters which causes following\nuse-after-free when filter is deleted concurrently. Fix fl_walk() to obtain\nrcu read lock while iterating and taking the filter reference and temporary\nrelease the lock while calling arg->fn() callback that can sleep.\n\nKASAN trace:\n\n[  352.773640] ==================================================================\n[  352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower]\n[  352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987\n\n[  352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2\n[  352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[  352.781022] Call Trace:\n[  352.781573]  dump_stack_lvl+0x46/0x5a\n[  352.782332]  print_address_description.constprop.0+0x1f/0x140\n[  352.783400]  ? fl_walk+0x159/0x240 [cls_flower]\n[  352.784292]  ? fl_walk+0x159/0x240 [cls_flower]\n[  352.785138]  kasan_report.cold+0x83/0xdf\n[  352.785851]  ? fl_walk+0x159/0x240 [cls_flower]\n[  352.786587]  kasan_check_range+0x145/0x1a0\n[  352.787337]  fl_walk+0x159/0x240 [cls_flower]\n[  352.788163]  ? fl_put+0x10/0x10 [cls_flower]\n[  352.789007]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[  352.790102]  tcf_chain_dump+0x231/0x450\n[  352.790878]  ? tcf_chain_tp_delete_empty+0x170/0x170\n[  352.791833]  ? __might_sleep+0x2e/0xc0\n[  352.792594]  ? tfilter_notify+0x170/0x170\n[  352.793400]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[  352.794477]  tc_dump_tfilter+0x385/0x4b0\n[  352.795262]  ? tc_new_tfilter+0x1180/0x1180\n[  352.796103]  ? __mod_node_page_state+0x1f/0xc0\n[  352.796974]  ? __build_skb_around+0x10e/0x130\n[  352.797826]  netlink_dump+0x2c0/0x560\n[  352.798563]  ? netlink_getsockopt+0x430/0x430\n[  352.799433]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[  352.800542]  __netlink_dump_start+0x356/0x440\n[  352.801397]  rtnetlink_rcv_msg+0x3ff/0x550\n[  352.802190]  ? tc_new_tfilter+0x1180/0x1180\n[  352.802872]  ? rtnl_calcit.isra.0+0x1f0/0x1f0\n[  352.803668]  ? tc_new_tfilter+0x1180/0x1180\n[  352.804344]  ? _copy_from_iter_nocache+0x800/0x800\n[  352.805202]  ? kasan_set_track+0x1c/0x30\n[  352.805900]  netlink_rcv_skb+0xc6/0x1f0\n[  352.806587]  ? rht_deferred_worker+0x6b0/0x6b0\n[  352.807455]  ? rtnl_calcit.isra.0+0x1f0/0x1f0\n[  352.808324]  ? netlink_ack+0x4d0/0x4d0\n[  352.809086]  ? netlink_deliver_tap+0x62/0x3d0\n[  352.809951]  netlink_unicast+0x353/0x480\n[  352.810744]  ? netlink_attachskb+0x430/0x430\n[  352.811586]  ? __alloc_skb+0xd7/0x200\n[  352.812349]  netlink_sendmsg+0x396/0x680\n[  352.813132]  ? netlink_unicast+0x480/0x480\n[  352.813952]  ? __import_iovec+0x192/0x210\n[  352.814759]  ? netlink_unicast+0x480/0x480\n[  352.815580]  sock_sendmsg+0x6c/0x80\n[  352.816299]  ____sys_sendmsg+0x3a5/0x3c0\n[  352.817096]  ? kernel_sendmsg+0x30/0x30\n[  352.817873]  ? __ia32_sys_recvmmsg+0x150/0x150\n[  352.818753]  ___sys_sendmsg+0xd8/0x140\n[  352.819518]  ? sendmsg_copy_msghdr+0x110/0x110\n[  352.820402]  ? ___sys_recvmsg+0xf4/0x1a0\n[  352.821110]  ? __copy_msghdr_from_user+0x260/0x260\n[  352.821934]  ? _raw_spin_lock+0x81/0xd0\n[  352.822680]  ? __handle_mm_fault+0xef3/0x1b20\n[  352.823549]  ? rb_insert_color+0x2a/0x270\n[  352.824373]  ? copy_page_range+0x16b0/0x16b0\n[  352.825209]  ? perf_event_update_userpage+0x2d0/0x2d0\n[  352.826190]  ? __fget_light+0xd9/0xf0\n[  352.826941]  __sys_sendmsg+0xb3/0x130\n[  352.827613]  ? __sys_sendmsg_sock+0x20/0x20\n[  352.828377]  ? do_user_addr_fault+0x2c5/0x8a0\n[  352.829184]  ? fpregs_assert_state_consistent+0x52/0x60\n[  352.830001]  ? exit_to_user_mode_prepare+0x32/0x160\n[  352.830845]  do_syscall_64+0x35/0x80\n[  352.831445]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n[  352.832331] RIP: 0033:0x7f7bee973c17\n[ \n---truncated---",null,[11],{"_key":12,"id":12,"name":13,"description":14,"type":15,"status":16,"abstraction":17,"likelihood_of_exploit":18,"capec":19},"CWE-416","Use After Free","The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","weakness","Stable","Variant","High",[],[],[],[],[24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110],{"_key":25},"SUSE-SU-2024:2185-1",{"_key":27},"SUSE-SU-2024:3023-1",{"_key":29},"SUSE-SU-2024:3803-1",{"_key":31},"SUSE-SU-2024:2894-1",{"_key":33},"SUSE-SU-2024:2010-1",{"_key":35},"SUSE-SU-2024:2183-1",{"_key":37},"SUSE-SU-2024:3030-1",{"_key":39},"SUSE-SU-2024:3034-1",{"_key":41},"SUSE-SU-2024:3039-1",{"_key":43},"SUSE-SU-2024:3041-1",{"_key":45},"SUSE-SU-2024:3043-1",{"_key":47},"SUSE-SU-2024:3044-1",{"_key":49},"SUSE-SU-2024:3048-1",{"_key":51},"SUSE-SU-2024:3642-1",{"_key":53},"SUSE-SU-2024:3649-1",{"_key":55},"SUSE-SU-2024:3651-1",{"_key":57},"SUSE-SU-2024:3652-1",{"_key":59},"SUSE-SU-2024:3685-1",{"_key":61},"SUSE-SU-2024:3796-1",{"_key":63},"SUSE-SU-2024:3798-1",{"_key":65},"SUSE-SU-2024:3814-1",{"_key":67},"SUSE-SU-2024:3849-1",{"_key":69},"SUSE-SU-2024:3854-1",{"_key":71},"SUSE-SU-2024:4180-1",{"_key":73},"SUSE-SU-2024:4242-1",{"_key":75},"SUSE-SU-2024:4250-1",{"_key":77},"SUSE-SU-2024:4256-1",{"_key":79},"SUSE-SU-2024:4263-1",{"_key":81},"SUSE-SU-2024:4264-1",{"_key":83},"SUSE-SU-2025:0101-1",{"_key":85},"SUSE-SU-2025:0106-1",{"_key":87},"SUSE-SU-2025:0137-1",{"_key":89},"SUSE-SU-2025:0238-1",{"_key":91},"SUSE-SU-2025:0240-1",{"_key":93},"SUSE-SU-2025:0244-1",{"_key":95},"SUSE-SU-2024:2008-1",{"_key":97},"SUSE-SU-2024:2011-1",{"_key":99},"SUSE-SU-2024:2019-1",{"_key":101},"SUSE-SU-2024:2189-1",{"_key":103},"SUSE-SU-2024:2190-1",{"_key":105},"SUSE-SU-2024:2947-1",{"_key":107},"OPENSUSE-SU-2024:14234-1",{"_key":109},"DEBIAN-CVE-2021-47402",{"_key":111},"UBUNTU-CVE-2021-47402",[],[114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155],{"_key":25},{"_key":27},{"_key":29},{"_key":31},{"_key":33},{"_key":35},{"_key":37},{"_key":39},{"_key":41},{"_key":43},{"_key":45},{"_key":47},{"_key":49},{"_key":51},{"_key":53},{"_key":55},{"_key":57},{"_key":59},{"_key":61},{"_key":63},{"_key":65},{"_key":67},{"_key":69},{"_key":71},{"_key":73},{"_key":75},{"_key":77},{"_key":79},{"_key":81},{"_key":83},{"_key":85},{"_key":87},{"_key":89},{"_key":91},{"_key":93},{"_key":95},{"_key":97},{"_key":99},{"_key":101},{"_key":103},{"_key":105},{"_key":107},"2024-05-21T15:03:56.690Z","2026-05-11T13:53:59.768Z","Analyzed",{"cisa_kev":160,"cisa_ransomware":160,"cisa_vendor":9,"epss_severity":161,"epss_score":162,"severity":163,"severity_score":164,"severity_version":165,"severity_source":166,"severity_vector":167,"severity_status":158},false,"low",0.00013,"high",7.8,"v3.1","nvd","CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",[169,175,179,183],{"url":170,"sources":171,"tags":173},"https://git.kernel.org/stable/c/694b0cee7f8546b69a80996a29cb3cf4149c0453",[172,166],"cve.org",[174],"Patch",{"url":176,"sources":177,"tags":178},"https://git.kernel.org/stable/c/d0d520c19e7ea19ed38dc5797b12397b6ccf9f88",[172,166],[174],{"url":180,"sources":181,"tags":182},"https://git.kernel.org/stable/c/dab4677bdbffa5c8270e79e34e51c89efa0728a0",[172,166],[174],{"url":184,"sources":185,"tags":186},"https://git.kernel.org/stable/c/d5ef190693a7d76c5c192d108e8dec48307b46ee",[172,166],[174],[],{"date":189,"score":162,"percentile":190},"2026-06-03",0.02058,[192,195,198,201,204,207,210,213,215,218,221,224,227,230,233,237,240,243,246,248,251,254,257,260,262,265,268,271,274,276,278,281,283,286,289,291,294,297,300,303,306,308,311,314,316,319,322,325,328,331,333,336,338,341,343,345,348,350,352,355,357,360,363,365,367,369,372,375,378,381,383,385,387,390,393,396,399,402,404,406,408,411,414,416,418,421,424,426,429,432],{"date":193,"score":162,"percentile":194},"2025-11-04",0.01371,{"date":196,"score":162,"percentile":197},"2025-11-05",0.01394,{"date":199,"score":162,"percentile":200},"2025-11-06",0.01412,{"date":202,"score":162,"percentile":203},"2025-11-07",0.01417,{"date":205,"score":162,"percentile":206},"2025-11-08",0.01421,{"date":208,"score":162,"percentile":209},"2025-11-09",0.01419,{"date":211,"score":162,"percentile":212},"2025-11-10",0.01401,{"date":214,"score":162,"percentile":200},"2025-11-11",{"date":216,"score":162,"percentile":217},"2025-11-12",0.01418,{"date":219,"score":162,"percentile":220},"2025-11-13",0.0143,{"date":222,"score":162,"percentile":223},"2025-11-14",0.01437,{"date":225,"score":162,"percentile":226},"2025-11-15",0.01458,{"date":228,"score":162,"percentile":229},"2025-11-16",0.01457,{"date":231,"score":162,"percentile":232},"2025-11-17",0.01447,{"date":234,"score":235,"percentile":236},"2025-11-18",0.00094,0.22639,{"date":238,"score":235,"percentile":239},"2025-11-19",0.2265,{"date":241,"score":235,"percentile":242},"2025-11-20",0.22657,{"date":244,"score":162,"percentile":245},"2025-11-21",0.01511,{"date":247,"score":162,"percentile":245},"2025-11-22",{"date":249,"score":162,"percentile":250},"2025-11-23",0.01497,{"date":252,"score":162,"percentile":253},"2025-11-24",0.01493,{"date":255,"score":162,"percentile":256},"2025-11-25",0.01479,{"date":258,"score":162,"percentile":259},"2025-11-26",0.01422,{"date":261,"score":162,"percentile":206},"2025-11-27",{"date":263,"score":162,"percentile":264},"2025-11-28",0.0142,{"date":266,"score":162,"percentile":267},"2025-11-29",0.01459,{"date":269,"score":162,"percentile":270},"2025-11-30",0.01469,{"date":272,"score":162,"percentile":273},"2025-12-01",0.01498,{"date":275,"score":162,"percentile":253},"2025-12-02",{"date":277,"score":162,"percentile":253},"2025-12-03",{"date":279,"score":162,"percentile":280},"2025-12-04",0.01467,{"date":282,"score":162,"percentile":256},"2025-12-05",{"date":284,"score":162,"percentile":285},"2025-12-06",0.01481,{"date":287,"score":162,"percentile":288},"2025-12-07",0.01475,{"date":290,"score":162,"percentile":288},"2025-12-08",{"date":292,"score":162,"percentile":293},"2025-12-09",0.0149,{"date":295,"score":162,"percentile":296},"2025-12-10",0.01504,{"date":298,"score":162,"percentile":299},"2025-12-11",0.015,{"date":301,"score":162,"percentile":302},"2025-12-12",0.01502,{"date":304,"score":162,"percentile":305},"2025-12-13",0.01486,{"date":307,"score":162,"percentile":256},"2025-12-14",{"date":309,"score":162,"percentile":310},"2025-12-15",0.01474,{"date":312,"score":162,"percentile":313},"2025-12-16",0.01483,{"date":315,"score":162,"percentile":293},"2025-12-17",{"date":317,"score":162,"percentile":318},"2025-12-18",0.01488,{"date":320,"score":162,"percentile":321},"2025-12-19",0.01494,{"date":323,"score":162,"percentile":324},"2025-12-20",0.01495,{"date":326,"score":162,"percentile":327},"2025-12-21",0.01505,{"date":329,"score":162,"percentile":330},"2025-12-22",0.01507,{"date":332,"score":162,"percentile":296},"2025-12-23",{"date":334,"score":162,"percentile":335},"2025-12-24",0.01506,{"date":337,"score":162,"percentile":245},"2025-12-25",{"date":339,"score":162,"percentile":340},"2025-12-26",0.01515,{"date":342,"score":162,"percentile":330},"2025-12-27",{"date":344,"score":162,"percentile":330},"2025-12-28",{"date":346,"score":162,"percentile":347},"2025-12-29",0.01499,{"date":349,"score":162,"percentile":253},"2025-12-30",{"date":351,"score":162,"percentile":293},"2025-12-31",{"date":353,"score":162,"percentile":354},"2026-01-01",0.01512,{"date":356,"score":162,"percentile":340},"2026-01-02",{"date":358,"score":162,"percentile":359},"2026-01-03",0.01518,{"date":361,"score":162,"percentile":362},"2026-01-04",0.01487,{"date":364,"score":162,"percentile":321},"2026-01-05",{"date":366,"score":162,"percentile":318},"2026-01-06",{"date":368,"score":162,"percentile":324},"2026-01-07",{"date":370,"score":162,"percentile":371},"2026-01-08",0.01509,{"date":373,"score":162,"percentile":374},"2026-01-09",0.01523,{"date":376,"score":162,"percentile":377},"2026-01-10",0.01534,{"date":379,"score":162,"percentile":380},"2026-01-11",0.01532,{"date":382,"score":162,"percentile":340},"2026-01-12",{"date":384,"score":162,"percentile":245},"2026-01-13",{"date":386,"score":162,"percentile":340},"2026-01-14",{"date":388,"score":162,"percentile":389},"2026-01-15",0.01526,{"date":391,"score":162,"percentile":392},"2026-01-16",0.01536,{"date":394,"score":162,"percentile":395},"2026-01-17",0.0154,{"date":397,"score":162,"percentile":398},"2026-01-18",0.01551,{"date":400,"score":162,"percentile":401},"2026-01-19",0.01541,{"date":403,"score":162,"percentile":389},"2026-01-20",{"date":405,"score":162,"percentile":359},"2026-01-21",{"date":407,"score":162,"percentile":359},"2026-01-22",{"date":409,"score":162,"percentile":410},"2026-01-23",0.01531,{"date":412,"score":162,"percentile":413},"2026-01-24",0.01537,{"date":415,"score":162,"percentile":413},"2026-01-25",{"date":417,"score":162,"percentile":377},"2026-01-26",{"date":419,"score":162,"percentile":420},"2026-01-27",0.01524,{"date":422,"score":162,"percentile":423},"2026-01-28",0.01519,{"date":425,"score":162,"percentile":377},"2026-01-29",{"date":427,"score":162,"percentile":428},"2026-01-30",0.01538,{"date":430,"score":162,"percentile":431},"2026-01-31",0.01556,{"date":433,"score":162,"percentile":434},"2026-02-01",0.01577,[436],{"source":166,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":437,"cvss_v4_0":9},{"baseScore":164,"baseSeverity":438,"vectorString":167,"impactScore":439,"exploitabilityScore":440},"HIGH",9.8,4.6,[442,465],{"ecosystem":9,"name":443,"vendor":444,"product":444,"cpe_part":445,"purl_type":9,"purl_namespace":9,"purl_name":9,"source":9,"versions":446},"Linux","linux","a",[447,454,457,460,463],{"version":448,"is_range":449,"range_type":172,"version_start":450,"version_start_type":451,"version_end":452,"version_end_type":453,"fixed_in":9},">= d39d714969cda5cbda291402c8c6b1fb1047f42e, \u003C 694b0cee7f8546b69a80996a29cb3cf4149c0453",true,"d39d714969cda5cbda291402c8c6b1fb1047f42e","including","694b0cee7f8546b69a80996a29cb3cf4149c0453","excluding",{"version":455,"is_range":449,"range_type":172,"version_start":450,"version_start_type":451,"version_end":456,"version_end_type":453,"fixed_in":9},">= d39d714969cda5cbda291402c8c6b1fb1047f42e, \u003C d0d520c19e7ea19ed38dc5797b12397b6ccf9f88","d0d520c19e7ea19ed38dc5797b12397b6ccf9f88",{"version":458,"is_range":449,"range_type":172,"version_start":450,"version_start_type":451,"version_end":459,"version_end_type":453,"fixed_in":9},">= d39d714969cda5cbda291402c8c6b1fb1047f42e, \u003C dab4677bdbffa5c8270e79e34e51c89efa0728a0","dab4677bdbffa5c8270e79e34e51c89efa0728a0",{"version":461,"is_range":449,"range_type":172,"version_start":450,"version_start_type":451,"version_end":462,"version_end_type":453,"fixed_in":9},">= d39d714969cda5cbda291402c8c6b1fb1047f42e, \u003C d5ef190693a7d76c5c192d108e8dec48307b46ee","d5ef190693a7d76c5c192d108e8dec48307b46ee",{"version":464,"is_range":160,"range_type":172,"version_start":464,"version_start_type":451,"version_end":464,"version_end_type":451,"fixed_in":9},"5.3",{"ecosystem":9,"name":466,"vendor":444,"product":467,"cpe_part":468,"purl_type":9,"purl_namespace":9,"purl_name":9,"source":9,"versions":469},"linux kernel","linux_kernel","o",[470,474,478,482,484,486],{"version":471,"is_range":449,"range_type":472,"version_start":464,"version_start_type":451,"version_end":473,"version_end_type":453,"fixed_in":9},"gte5.3_lt5.4.151","cpe","5.4.151",{"version":475,"is_range":449,"range_type":472,"version_start":476,"version_start_type":451,"version_end":477,"version_end_type":453,"fixed_in":9},"gte5.5_lt5.10.71","5.5","5.10.71",{"version":479,"is_range":449,"range_type":472,"version_start":480,"version_start_type":451,"version_end":481,"version_end_type":453,"fixed_in":9},"gte5.11_lt5.14.10","5.11","5.14.10",{"version":483,"is_range":160,"range_type":472,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"5.15:rc1",{"version":485,"is_range":160,"range_type":472,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"5.15:rc2",{"version":487,"is_range":160,"range_type":472,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"5.15:rc3"]