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CVE-2024-26793— gtp: fix use-after-free and null-ptr-deref in gtp_newlink()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 gtp gtp_newlink() 中存在释放后重用问题。

CVSS 7.8 · High EPSS 0.29% · P20

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 459aa660eb1d8ce67080da1983bb81d716aa5a69< 01129059d5141d62fae692f7a336ae3bc712d3eb affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6 affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< e668b92a3a01429923fd5ca13e99642aab47de69 affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< 9376d059a705c5dfaac566c2d09891242013ae16 affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< abd32d7f5c0294c1b2454c5a3b13b18446bac627 affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< 93dd420bc41531c9a31498b9538ca83ba6ec191e affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< 5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8 affected
459aa660eb1d8ce67080da1983bb81d716aa5a69< 616d82c3cfa2a2146dd7e3ae47bda7e877ee549e affected
… +10 more rows
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I. Basic Information for CVE-2024-26793

Vulnerability Information
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Vulnerability Title
gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
Source: CVE Program / CVE List V5
Vulnerability 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 ---truncated---
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 gtp gtp_newlink() 中存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 459aa660eb1d8ce67080da1983bb81d716aa5a69 ~ 01129059d5141d62fae692f7a336ae3bc712d3eb -
Linux Linux 4.7 -

II. Public POCs for CVE-2024-26793

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III. Intelligence Information for CVE-2024-26793

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Mailing List Discussions for CVE-2024-26793 (2)

Other References for CVE-2024-26793 (6)

Same Patch Batch · Linux · 2024-04-04 · 32 CVEs total

CVE-2024-26782 9.8 CRITICAL mptcp: fix double-free on socket dismantle
CVE-2024-26800 9.8 CRITICAL tls: fix use-after-free on failed backlog decryption
CVE-2024-26801 8.8 HIGH Bluetooth: Avoid potential use-after-free in hci_error_reset
CVE-2024-26792 7.8 HIGH btrfs: fix double free of anonymous device after snapshot creation failure
CVE-2024-26809 7.8 HIGH netfilter: nft_set_pipapo: release elements in clone only from destroy path
CVE-2024-26808 7.8 HIGH netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain
CVE-2024-26807 7.8 HIGH spi: cadence-qspi: fix pointer reference in runtime PM hooks
CVE-2024-26804 7.8 HIGH net: ip_tunnel: prevent perpetual headroom growth
CVE-2024-26802 7.8 HIGH stmmac: Clear variable when destroying workqueue
CVE-2024-26797 7.8 HIGH drm/amd/display: Prevent potential buffer overflow in map_hw_resources
CVE-2024-26795 7.8 HIGH riscv: Sparse-Memory/vmemmap out-of-bounds fix
CVE-2024-26789 7.8 HIGH crypto: arm64/neonbs - fix out-of-bounds access on short input
CVE-2024-26786 7.8 HIGH iommufd: Fix iopt_access_list_id overwrite bug
CVE-2024-26799 7.0 HIGH ASoC: qcom: Fix uninitialized pointer dmactl
CVE-2024-26785 iommufd: Fix protection fault in iommufd_test_syz_conv_iova
CVE-2024-26746 dmaengine: idxd: Ensure safe user copy of completion record
CVE-2024-26750 af_unix: Drop oob_skb ref before purging queue in GC.
CVE-2024-26780 af_unix: Fix task hung while purging oob_skb in GC.
CVE-2024-26806 spi: cadence-qspi: remove system-wide suspend helper calls from runtime PM hooks
CVE-2024-26805 netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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