| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: Drop support for ETH_P_TR_802_2.\n\nsyzbot reported an uninit-value bug below. [0]\n\nllc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2\n(0x0011), and syzbot abused the latter to trigger the bug.\n\n write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\"}}}}, 0x16)\n\nllc_conn_handler() initialises local variables {saddr,daddr}.mac\nbased on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes\nthem to __llc_lookup().\n\nHowever, the initialisation is done only when skb->protocol is\nhtons(ETH_P_802_2), otherwise, __llc_lookup_established() and\n__llc_lookup_listener() will read garbage.\n\nThe missing initialisation existed prior to commit 211ed865108e\n(\"net: delete all instances of special processing for token ring\").\n\nIt removed the part to kick out the token ring stuff but forgot to\nclose the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv().\n\nLet's remove llc_tr_packet_type and complete the deprecation.\n\n[0]:\nBUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90\n __llc_lookup_established+0xe9d/0xf90\n __llc_lookup net/llc/llc_conn.c:611 [inline]\n llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n __netif_receive_skb_one_core net/core/dev.c:5527 [inline]\n __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641\n netif_receive_skb_internal net/core/dev.c:5727 [inline]\n netif_receive_skb+0x58/0x660 net/core/dev.c:5786\n tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\n tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n call_write_iter include/linux/fs.h:2020 [inline]\n new_sync_write fs/read_write.c:491 [inline]\n vfs_write+0x8ef/0x1490 fs/read_write.c:584\n ksys_write+0x20f/0x4c0 fs/read_write.c:637\n __do_sys_write fs/read_write.c:649 [inline]\n __se_sys_write fs/read_write.c:646 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:646\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nLocal variable daddr created at:\n llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n\nCPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/llc_pdu.h", |
| "net/llc/llc_core.c" |
| ], |
| "versions": [ |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "165ad1e22779685c3ed3dd349c6c4c632309cc62", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "b8e8838f82f332ae80c643dbb1ca4418d0628097", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "9ccdef19cf9497c2803b005369668feb91cacdfd", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "660c3053d992b68fee893a0e9ec9159228cffdc6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "f1f34a515fb1e25e85dee94f781e7869ae351fb8", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "df57fc2f2abf548aa889a36ab0bdcc94a75399dc", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", |
| "lessThan": "e3f9bed9bee261e3347131764e42aeedf1ffea61", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/llc_pdu.h", |
| "net/llc/llc_core.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.5", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.5", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.307", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.269", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.210", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.149", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.76", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.15", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7.3", |
| "lessThanOrEqual": "6.7.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8", |
| "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": "3.5", |
| "versionEndExcluding": "4.19.307" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "5.4.269" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "5.10.210" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "5.15.149" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "6.1.76" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "6.6.15" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "6.7.3" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.5", |
| "versionEndExcluding": "6.8" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61" |
| } |
| ], |
| "title": "llc: Drop support for ETH_P_TR_802_2.", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-26635", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
