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CVE-2023-54181— bpf: Fix issue in verifying allow_ptr_leaks

EPSS 0.03% · P10
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I. Basic Information for CVE-2023-54181

Vulnerability Information
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Vulnerability Title
bpf: Fix issue in verifying allow_ptr_leaks
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix issue in verifying allow_ptr_leaks After we converted the capabilities of our networking-bpf program from cap_sys_admin to cap_net_admin+cap_bpf, our networking-bpf program failed to start. Because it failed the bpf verifier, and the error log is "R3 pointer comparison prohibited". A simple reproducer as follows, SEC("cls-ingress") int ingress(struct __sk_buff *skb) { struct iphdr *iph = (void *)(long)skb->data + sizeof(struct ethhdr); if ((long)(iph + 1) > (long)skb->data_end) return TC_ACT_STOLEN; return TC_ACT_OK; } Per discussion with Yonghong and Alexei [1], comparison of two packet pointers is not a pointer leak. This patch fixes it. Our local kernel is 6.1.y and we expect this fix to be backported to 6.1.y, so stable is CCed. [1]. https://lore.kernel.org/bpf/CAADnVQ+Nmspr7Si+pxWn8zkE7hX-7s93ugwC+94aXSy4uQ9vBg@mail.gmail.com/
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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验证器错误地禁止指针比较。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 ~ c96c67991aac6401b4c6996093bccb704bb2ea4b -
LinuxLinux 5.8 -

II. Public POCs for CVE-2023-54181

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III. Intelligence Information for CVE-2023-54181

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Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54265ipv6: Fix an uninit variable access bug in __ip6_make_skb()
CVE-2023-54249bus: mhi: ep: Only send -ENOTCONN status if client driver is available
CVE-2023-54251net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.
CVE-2023-54253btrfs: set page extent mapped after read_folio in relocate_one_page
CVE-2023-54252platform/x86: think-lmi: Fix memory leaks when parsing ThinkStation WMI strings
CVE-2023-54254drm/ttm: Don't leak a resource on eviction error
CVE-2023-54255sh: dma: Fix DMA channel offset calculation
CVE-2023-54257net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258cifs: fix potential oops in cifs_oplock_break
CVE-2023-54259soundwire: bus: Fix unbalanced pm_runtime_put() causing usage count underflow
CVE-2023-54260cifs: Fix lost destroy smbd connection when MR allocate failed
CVE-2023-54261drm/amdkfd: Add missing gfx11 MQD manager callbacks
CVE-2023-54262net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54263drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP
CVE-2023-54264fs/sysv: Null check to prevent null-ptr-deref bug
CVE-2023-54266media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer()
CVE-2023-54275wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup
CVE-2023-54276nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net
CVE-2023-54278s390/vmem: split pages when debug pagealloc is enabled
CVE-2023-54274RDMA/srpt: Add a check for valid 'mad_agent' pointer

Showing top 20 of 244 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54181

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