{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-43911", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-17T09:11:59.295Z", "datePublished": "2024-08-26T10:11:15.545Z", "dateUpdated": "2026-05-11T20:32:09.574Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:32:09.574Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix NULL dereference at band check in starting tx ba session\n\nIn MLD connection, link_data/link_conf are dynamically allocated. They\ndon't point to vif->bss_conf. So, there will be no chanreq assigned to\nvif->bss_conf and then the chan will be NULL. Tweak the code to check\nht_supported/vht_supported/has_he/has_eht on sta deflink.\n\nCrash log (with rtw89 version under MLO development):\n[ 9890.526087] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[ 9890.526102] #PF: supervisor read access in kernel mode\n[ 9890.526105] #PF: error_code(0x0000) - not-present page\n[ 9890.526109] PGD 0 P4D 0\n[ 9890.526114] Oops: 0000 [#1] PREEMPT SMP PTI\n[ 9890.526119] CPU: 2 PID: 6367 Comm: kworker/u16:2 Kdump: loaded Tainted: G OE 6.9.0 #1\n[ 9890.526123] Hardware name: LENOVO 2356AD1/2356AD1, BIOS G7ETB3WW (2.73 ) 11/28/2018\n[ 9890.526126] Workqueue: phy2 rtw89_core_ba_work [rtw89_core]\n[ 9890.526203] RIP: 0010:ieee80211_start_tx_ba_session (net/mac80211/agg-tx.c:618 (discriminator 1)) mac80211\n[ 9890.526279] Code: f7 e8 d5 93 3e ea 48 83 c4 28 89 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 49 8b 84 24 e0 f1 ff ff 48 8b 80 90 1b 00 00 <83> 38 03 0f 84 37 fe ff ff bb ea ff ff ff eb cc 49 8b 84 24 10 f3\nAll code\n========\n 0:\tf7 e8 \timul %eax\n 2:\td5 \t(bad)\n 3:\t93 \txchg %eax,%ebx\n 4:\t3e ea \tds (bad)\n 6:\t48 83 c4 28 \tadd $0x28,%rsp\n a:\t89 d8 \tmov %ebx,%eax\n c:\t5b \tpop %rbx\n d:\t41 5c \tpop %r12\n f:\t41 5d \tpop %r13\n 11:\t41 5e \tpop %r14\n 13:\t41 5f \tpop %r15\n 15:\t5d \tpop %rbp\n 16:\tc3 \tretq\n 17:\tcc \tint3\n 18:\tcc \tint3\n 19:\tcc \tint3\n 1a:\tcc \tint3\n 1b:\t49 8b 84 24 e0 f1 ff \tmov -0xe20(%r12),%rax\n 22:\tff\n 23:\t48 8b 80 90 1b 00 00 \tmov 0x1b90(%rax),%rax\n 2a:*\t83 38 03 \tcmpl $0x3,(%rax)\t\t<-- trapping instruction\n 2d:\t0f 84 37 fe ff ff \tje 0xfffffffffffffe6a\n 33:\tbb ea ff ff ff \tmov $0xffffffea,%ebx\n 38:\teb cc \tjmp 0x6\n 3a:\t49 \trex.WB\n 3b:\t8b \t.byte 0x8b\n 3c:\t84 24 10 \ttest %ah,(%rax,%rdx,1)\n 3f:\tf3 \trepz\n\nCode starting with the faulting instruction\n===========================================\n 0:\t83 38 03 \tcmpl $0x3,(%rax)\n 3:\t0f 84 37 fe ff ff \tje 0xfffffffffffffe40\n 9:\tbb ea ff ff ff \tmov $0xffffffea,%ebx\n e:\teb cc \tjmp 0xffffffffffffffdc\n 10:\t49 \trex.WB\n 11:\t8b \t.byte 0x8b\n 12:\t84 24 10 \ttest %ah,(%rax,%rdx,1)\n 15:\tf3 \trepz\n[ 9890.526285] RSP: 0018:ffffb8db09013d68 EFLAGS: 00010246\n[ 9890.526291] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff9308e0d656c8\n[ 9890.526295] RDX: 0000000000000000 RSI: ffffffffab99460b RDI: ffffffffab9a7685\n[ 9890.526300] RBP: ffffb8db09013db8 R08: 0000000000000000 R09: 0000000000000873\n[ 9890.526304] R10: ffff9308e0d64800 R11: 0000000000000002 R12: ffff9308e5ff6e70\n[ 9890.526308] R13: ffff930952500e20 R14: ffff9309192a8c00 R15: 0000000000000000\n[ 9890.526313] FS: 0000000000000000(0000) GS:ffff930b4e700000(0000) knlGS:0000000000000000\n[ 9890.526316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 9890.526318] CR2: 0000000000000000 CR3: 0000000391c58005 CR4: 00000000001706f0\n[ 9890.526321] Call Trace:\n[ 9890.526324] \n[ 9890.526327] ? show_regs (arch/x86/kernel/dumpstack.c:479)\n[ 9890.526335] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)\n[ 9890.526340] ? page_fault_oops (arch/x86/mm/fault.c:713)\n[ 9890.526347] ? search_module_extables (kernel/module/main.c:3256 (discriminator\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/mac80211/agg-tx.c" ], "versions": [ { "version": "6092077ad09ce880c61735c314060f0bd79ae4aa", "lessThan": "a5594c1e03b0df3908b1e1202a1ba34422eed0f6", "status": "affected", "versionType": "git" }, { "version": "6092077ad09ce880c61735c314060f0bd79ae4aa", "lessThan": "021d53a3d87eeb9dbba524ac515651242a2a7e3b", "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/mac80211/agg-tx.c" ], "versions": [ { "version": "6.9", "status": "affected" }, { "version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.5", "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": "6.9", "versionEndExcluding": "6.10.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a5594c1e03b0df3908b1e1202a1ba34422eed0f6" }, { "url": "https://git.kernel.org/stable/c/021d53a3d87eeb9dbba524ac515651242a2a7e3b" } ], "title": "wifi: mac80211: fix NULL dereference at band check in starting tx ba session", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-43911", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:28:15.382346Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:32:56.586Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:07:16.250Z" } } ] } }