| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-26793: gtp: fix use-after-free and null-ptr-deref in gtp_newlink() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| gtp: fix use-after-free and null-ptr-deref in gtp_newlink() |
| |
| The gtp_link_ops operations structure for the subsystem must be |
| registered after registering the gtp_net_ops pernet operations structure. |
| |
| Syzkaller hit 'general protection fault in gtp_genl_dump_pdp' bug: |
| |
| [ 1010.702740] gtp: GTP module unloaded |
| [ 1010.715877] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI |
| [ 1010.715888] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] |
| [ 1010.715895] CPU: 1 PID: 128616 Comm: a.out Not tainted 6.8.0-rc6-std-def-alt1 #1 |
| [ 1010.715899] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014 |
| [ 1010.715908] RIP: 0010:gtp_newlink+0x4d7/0x9c0 [gtp] |
| [ 1010.715915] Code: 80 3c 02 00 0f 85 41 04 00 00 48 8b bb d8 05 00 00 e8 ed f6 ff ff 48 89 c2 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 4f 04 00 00 4c 89 e2 4c 8b 6d 00 48 b8 00 00 00 |
| [ 1010.715920] RSP: 0018:ffff888020fbf180 EFLAGS: 00010203 |
| [ 1010.715929] RAX: dffffc0000000000 RBX: ffff88800399c000 RCX: 0000000000000000 |
| [ 1010.715933] RDX: 0000000000000001 RSI: ffffffff84805280 RDI: 0000000000000282 |
| [ 1010.715938] RBP: 000000000000000d R08: 0000000000000001 R09: 0000000000000000 |
| [ 1010.715942] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800399cc80 |
| [ 1010.715947] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000400 |
| [ 1010.715953] FS: 00007fd1509ab5c0(0000) GS:ffff88805b300000(0000) knlGS:0000000000000000 |
| [ 1010.715958] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 1010.715962] CR2: 0000000000000000 CR3: 000000001c07a000 CR4: 0000000000750ee0 |
| [ 1010.715968] PKRU: 55555554 |
| [ 1010.715972] Call Trace: |
| [ 1010.715985] ? __die_body.cold+0x1a/0x1f |
| [ 1010.715995] ? die_addr+0x43/0x70 |
| [ 1010.716002] ? exc_general_protection+0x199/0x2f0 |
| [ 1010.716016] ? asm_exc_general_protection+0x1e/0x30 |
| [ 1010.716026] ? gtp_newlink+0x4d7/0x9c0 [gtp] |
| [ 1010.716034] ? gtp_net_exit+0x150/0x150 [gtp] |
| [ 1010.716042] __rtnl_newlink+0x1063/0x1700 |
| [ 1010.716051] ? rtnl_setlink+0x3c0/0x3c0 |
| [ 1010.716063] ? is_bpf_text_address+0xc0/0x1f0 |
| [ 1010.716070] ? kernel_text_address.part.0+0xbb/0xd0 |
| [ 1010.716076] ? __kernel_text_address+0x56/0xa0 |
| [ 1010.716084] ? unwind_get_return_address+0x5a/0xa0 |
| [ 1010.716091] ? create_prof_cpu_mask+0x30/0x30 |
| [ 1010.716098] ? arch_stack_walk+0x9e/0xf0 |
| [ 1010.716106] ? stack_trace_save+0x91/0xd0 |
| [ 1010.716113] ? stack_trace_consume_entry+0x170/0x170 |
| [ 1010.716121] ? __lock_acquire+0x15c5/0x5380 |
| [ 1010.716139] ? mark_held_locks+0x9e/0xe0 |
| [ 1010.716148] ? kmem_cache_alloc_trace+0x35f/0x3c0 |
| [ 1010.716155] ? __rtnl_newlink+0x1700/0x1700 |
| [ 1010.716160] rtnl_newlink+0x69/0xa0 |
| [ 1010.716166] rtnetlink_rcv_msg+0x43b/0xc50 |
| [ 1010.716172] ? rtnl_fdb_dump+0x9f0/0x9f0 |
| [ 1010.716179] ? lock_acquire+0x1fe/0x560 |
| [ 1010.716188] ? netlink_deliver_tap+0x12f/0xd50 |
| [ 1010.716196] netlink_rcv_skb+0x14d/0x440 |
| [ 1010.716202] ? rtnl_fdb_dump+0x9f0/0x9f0 |
| [ 1010.716208] ? netlink_ack+0xab0/0xab0 |
| [ 1010.716213] ? netlink_deliver_tap+0x202/0xd50 |
| [ 1010.716220] ? netlink_deliver_tap+0x218/0xd50 |
| [ 1010.716226] ? __virt_addr_valid+0x30b/0x590 |
| [ 1010.716233] netlink_unicast+0x54b/0x800 |
| [ 1010.716240] ? netlink_attachskb+0x870/0x870 |
| [ 1010.716248] ? __check_object_size+0x2de/0x3b0 |
| [ 1010.716254] netlink_sendmsg+0x938/0xe40 |
| [ 1010.716261] ? netlink_unicast+0x800/0x800 |
| [ 1010.716269] ? __import_iovec+0x292/0x510 |
| [ 1010.716276] ? netlink_unicast+0x800/0x800 |
| [ 1010.716284] __sock_sendmsg+0x159/0x190 |
| [ 1010.716290] ____sys_sendmsg+0x712/0x880 |
| [ 1010.716297] ? sock_write_iter+0x3d0/0x3d0 |
| [ 1010.716304] ? __ia32_sys_recvmmsg+0x270/0x270 |
| [ 1010.716309] ? lock_acquire+0x1fe/0x560 |
| [ 1010.716315] ? drain_array_locked+0x90/0x90 |
| [ 1010.716324] ___sys_sendmsg+0xf8/0x170 |
| [ 1010.716331] ? sendmsg_copy_msghdr+0x170/0x170 |
| [ 1010.716337] ? lockdep_init_map_type+0x2c7/0x860 |
| [ 1010.716343] ? lockdep_hardirqs_on_prepare+0x430/0x430 |
| [ 1010.716350] ? debug_mutex_init+0x33/0x70 |
| [ 1010.716360] ? percpu_counter_add_batch+0x8b/0x140 |
| [ 1010.716367] ? lock_acquire+0x1fe/0x560 |
| [ 1010.716373] ? find_held_lock+0x2c/0x110 |
| [ 1010.716384] ? __fd_install+0x1b6/0x6f0 |
| [ 1010.716389] ? lock_downgrade+0x810/0x810 |
| [ 1010.716396] ? __fget_light+0x222/0x290 |
| [ 1010.716403] __sys_sendmsg+0xea/0x1b0 |
| [ 1010.716409] ? __sys_sendmsg_sock+0x40/0x40 |
| [ 1010.716419] ? lockdep_hardirqs_on_prepare+0x2b3/0x430 |
| [ 1010.716425] ? syscall_enter_from_user_mode+0x1d/0x60 |
| [ 1010.716432] do_syscall_64+0x30/0x40 |
| [ 1010.716438] entry_SYSCALL_64_after_hwframe+0x62/0xc7 |
| [ 1010.716444] RIP: 0033:0x7fd1508cbd49 |
| [ 1010.716452] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ef 70 0d 00 f7 d8 64 89 01 48 |
| [ 1010.716456] RSP: 002b:00007fff18872348 EFLAGS: 00000202 ORIG_RAX: 000000000000002e |
| [ 1010.716463] RAX: ffffffffffffffda RBX: 000055f72bf0eac0 RCX: 00007fd1508cbd49 |
| [ 1010.716468] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 |
| [ 1010.716473] RBP: 00007fff18872360 R08: 00007fff18872360 R09: 00007fff18872360 |
| [ 1010.716478] R10: 00007fff18872360 R11: 0000000000000202 R12: 000055f72bf0e1b0 |
| [ 1010.716482] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 |
| [ 1010.716491] Modules linked in: gtp(+) udp_tunnel ib_core uinput af_packet rfkill qrtr joydev hid_generic usbhid hid kvm_intel iTCO_wdt intel_pmc_bxt iTCO_vendor_support kvm snd_hda_codec_generic ledtrig_audio irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_intel nls_utf8 snd_intel_dspcfg nls_cp866 psmouse aesni_intel vfat crypto_simd fat cryptd glue_helper snd_hda_codec pcspkr snd_hda_core i2c_i801 snd_hwdep i2c_smbus xhci_pci snd_pcm lpc_ich xhci_pci_renesas xhci_hcd qemu_fw_cfg tiny_power_button button sch_fq_codel vboxvideo drm_vram_helper drm_ttm_helper ttm vboxsf vboxguest snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi snd_seq_device snd_timer snd soundcore msr fuse efi_pstore dm_mod ip_tables x_tables autofs4 virtio_gpu virtio_dma_buf drm_kms_helper cec rc_core drm virtio_rng virtio_scsi rng_core virtio_balloon virtio_blk virtio_net virtio_console net_failover failover ahci libahci libata evdev scsi_mod input_leds serio_raw virtio_pci intel_agp |
| [ 1010.716674] virtio_ring intel_gtt virtio [last unloaded: gtp] |
| [ 1010.716693] ---[ end trace 04990a4ce61e174b ]--- |
| |
| The Linux kernel CVE team has assigned CVE-2024-26793 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 4.19.309 with commit 01129059d5141d62fae692f7a336ae3bc712d3eb |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.4.271 with commit ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.10.212 with commit e668b92a3a01429923fd5ca13e99642aab47de69 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.15.151 with commit 9376d059a705c5dfaac566c2d09891242013ae16 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.1.81 with commit abd32d7f5c0294c1b2454c5a3b13b18446bac627 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.6.21 with commit 93dd420bc41531c9a31498b9538ca83ba6ec191e |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.7.9 with commit 5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.8 with commit 616d82c3cfa2a2146dd7e3ae47bda7e877ee549e |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-26793 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/gtp.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/01129059d5141d62fae692f7a336ae3bc712d3eb |
| https://git.kernel.org/stable/c/ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6 |
| https://git.kernel.org/stable/c/e668b92a3a01429923fd5ca13e99642aab47de69 |
| https://git.kernel.org/stable/c/9376d059a705c5dfaac566c2d09891242013ae16 |
| https://git.kernel.org/stable/c/abd32d7f5c0294c1b2454c5a3b13b18446bac627 |
| https://git.kernel.org/stable/c/93dd420bc41531c9a31498b9538ca83ba6ec191e |
| https://git.kernel.org/stable/c/5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8 |
| https://git.kernel.org/stable/c/616d82c3cfa2a2146dd7e3ae47bda7e877ee549e |
