Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-50163— bpf: Make sure internal and UAPI bpf_redirect flags don't overlap

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bpf组件在处理bpf_redirect_info时，内部和UAPI bpf_redirect标志重叠。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux e624d4ed4aa8cc3c69d1359b0aaea539203ed266< 4e1e428533845d48828bd3875c0e92e8565b9962 affected
e624d4ed4aa8cc3c69d1359b0aaea539203ed266< 314dbee9fe4f5cee36435465de52c988d7caa466 affected
e624d4ed4aa8cc3c69d1359b0aaea539203ed266< 0fca5ed4be8e8bfbfb9bd97845af596bab7192d3 affected
e624d4ed4aa8cc3c69d1359b0aaea539203ed266< cec288e05ceac9a0d3a3a1fd279534b11844c826 affected
e624d4ed4aa8cc3c69d1359b0aaea539203ed266< 09d88791c7cd888d5195c84733caf9183dcfbd16 affected
5.14 affected
< 5.14 unaffected
5.15.170≤ 5.15.* unaffected
… +4 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-50163

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
bpf: Make sure internal and UAPI bpf_redirect flags don't overlap
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Make sure internal and UAPI bpf_redirect flags don't overlap The bpf_redirect_info is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri->flags field (specifically, BPF_F_BROADCAST == BPF_F_NEXTHOP). This means that if skb bpf_redirect_neigh() is used with a non-NULL params argument and, subsequently, an XDP redirect is performed using the same bpf_redirect_info struct, the XDP path will get confused and end up crashing, which syzbot managed to trigger. With the stack-allocated bpf_redirect_info, the structure is no longer shared between the SKB and XDP paths, so the crash doesn't happen anymore. However, different code paths using identically-numbered flag values in the same struct field still seems like a bit of a mess, so this patch cleans that up by moving the flag definitions together and redefining the three flags in BPF_F_REDIRECT_INTERNAL to not overlap with the flags used for XDP. It also adds a BUILD_BUG_ON() check to make sure the overlap is not re-introduced by mistake.
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bpf组件在处理bpf_redirect_info时，内部和UAPI bpf_redirect标志重叠。
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 e624d4ed4aa8cc3c69d1359b0aaea539203ed266 ~ 4e1e428533845d48828bd3875c0e92e8565b9962 -
Linux Linux 5.14 -

II. Public POCs for CVE-2024-50163

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-50163

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-50163 (5)

Same Patch Batch · Linux · 2024-11-07 · 34 CVEs total

CVE-2024-50162 9.8 CRITICAL bpf: devmap: provide rxq after redirect
CVE-2024-50154 9.8 CRITICAL tcp/dccp: Don't use timer_pending() in reqsk_queue_unlink().
CVE-2024-50152 9.8 CRITICAL smb: client: fix possible double free in smb2_set_ea()
CVE-2024-50139 7.9 HIGH KVM: arm64: Fix shift-out-of-bounds bug
CVE-2024-50150 7.8 HIGH usb: typec: altmode should keep reference to parent
CVE-2024-50161 7.8 HIGH bpf: Check the remaining info_cnt before repeating btf fields
CVE-2024-50158 7.8 HIGH RDMA/bnxt_re: Fix out of bound check
CVE-2024-50164 7.8 HIGH bpf: Fix overloading of MEM_UNINIT's meaning
CVE-2024-50165 7.8 HIGH bpf: Preserve param->string when parsing mount options
CVE-2024-50151 7.8 HIGH smb: client: fix OOBs when building SMB2_IOCTL request
CVE-2024-50149 7.8 HIGH drm/xe: Don't free job in TDR
CVE-2024-50143 7.8 HIGH udf: fix uninit-value use in udf_get_fileshortad
CVE-2024-50141 7.8 HIGH ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context
CVE-2024-50145 7.5 HIGH octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()
CVE-2024-50170 7.5 HIGH net: bcmasp: fix potential memory leak in bcmasp_xmit()
CVE-2024-50159 7.0 HIGH firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()
CVE-2024-50155 netdevsim: use cond_resched() in nsim_dev_trap_report_work()
CVE-2024-50167 be2net: fix potential memory leak in be_xmit()
CVE-2024-50168 net/sun3_82586: fix potential memory leak in sun3_82586_send_packet()
CVE-2024-50166 fsl/fman: Fix refcount handling of fman-related devices

Showing top 20 of 34 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-50163

No comments yet

Leave a comment