{"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":"2025-11-03T22:07:16.250Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-06-19T12:48:49.939Z"},"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]  <TASK>\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"}}]}}