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CVE-2024-42082— xdp: Remove WARN() from __xdp_reg_mem_model()

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，该漏洞源于在__mem_id_init_hash_table函数返回错误时，_xbdp_reg_mem_model函数中的WARN函数仅在内存分配失败时触发，没有处理此错误的实际意义。

AI Predicted 3.3 Difficulty: Theoretical EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1205.001 · Port Knocking

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 8d5d88527587516bd58ff0f3810f07c38e65e2be< 1095b8efbb13a6a5fa583ed373ee1ccab29da2d0 affected
8d5d88527587516bd58ff0f3810f07c38e65e2be< 1d3e3b3aa2cbe9bc7db9a7f8673a9fa6d2990d54 affected
8d5d88527587516bd58ff0f3810f07c38e65e2be< 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 affected
8d5d88527587516bd58ff0f3810f07c38e65e2be< 14e51ea78b4ccacb7acb1346b9241bb790a2054c affected
8d5d88527587516bd58ff0f3810f07c38e65e2be< f92298b0467fd77edc4c1a2c3e48833e69840ec4 affected
8d5d88527587516bd58ff0f3810f07c38e65e2be< 7e9f79428372c6eab92271390851be34ab26bfb4 affected
4.18 affected
< 4.18 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-42082

Vulnerability Information
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Vulnerability Title
xdp: Remove WARN() from __xdp_reg_mem_model()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xdp: Remove WARN() from __xdp_reg_mem_model() syzkaller reports a warning in __xdp_reg_mem_model(). The warning occurs only if __mem_id_init_hash_table() returns an error. It returns the error in two cases: 1. memory allocation fails; 2. rhashtable_init() fails when some fields of rhashtable_params struct are not initialized properly. The second case cannot happen since there is a static const rhashtable_params struct with valid fields. So, warning is only triggered when there is a problem with memory allocation. Thus, there is no sense in using WARN() to handle this error and it can be safely removed. WARNING: CPU: 0 PID: 5065 at net/core/xdp.c:299 __xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 CPU: 0 PID: 5065 Comm: syz-executor883 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 Call Trace: xdp_reg_mem_model+0x22/0x40 net/core/xdp.c:344 xdp_test_run_setup net/bpf/test_run.c:188 [inline] bpf_test_run_xdp_live+0x365/0x1e90 net/bpf/test_run.c:377 bpf_prog_test_run_xdp+0x813/0x11b0 net/bpf/test_run.c:1267 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4240 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5649 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Found by Linux Verification Center (linuxtesting.org) with syzkaller.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于在__mem_id_init_hash_table函数返回错误时，_xbdp_reg_mem_model函数中的WARN函数仅在内存分配失败时触发，没有处理此错误的实际意义。
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 8d5d88527587516bd58ff0f3810f07c38e65e2be ~ 1095b8efbb13a6a5fa583ed373ee1ccab29da2d0 -
Linux Linux 4.18 -

II. Public POCs for CVE-2024-42082

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III. Intelligence Information for CVE-2024-42082

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Other References for CVE-2024-42082 (5)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41041 7.8 HIGH udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2024-41017 7.8 HIGH jfs: don't walk off the end of ealist
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-41051 7.8 HIGH cachefiles: wait for ondemand_object_worker to finish when dropping object
CVE-2024-42067 7.8 HIGH bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()
CVE-2024-42068 7.8 HIGH bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
CVE-2024-42069 7.8 HIGH net: mana: Fix possible double free in error handling path
CVE-2024-42071 7.8 HIGH ionic: use dev_consume_skb_any outside of napi
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42082

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