CVE-2025-71291— misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 88517757a829e9ce146a6c7233ad5dcdc66fcbb0< 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22 | affected |
88517757a829e9ce146a6c7233ad5dcdc66fcbb0< ece3722169ba93734bfd1f06255e8ab7f19fe964 | affected | ||
88517757a829e9ce146a6c7233ad5dcdc66fcbb0< aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb | affected | ||
88517757a829e9ce146a6c7233ad5dcdc66fcbb0< 3842f93e6e29d5cc1dcb9e5bda70587b444bed69 | affected | ||
88517757a829e9ce146a6c7233ad5dcdc66fcbb0< 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd | affected | ||
88517757a829e9ce146a6c7233ad5dcdc66fcbb0< ba75ecb97d3f4e95d59002c13afb6519205be6cb | affected | ||
5.19 | affected | ||
< 5.19 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2025-71291
Vulnerability Information
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Vulnerability Title
misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read() In the function bcm_vk_read(), the pointer entry is checked, indicating that it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the following code may cause null-pointer dereferences: struct vk_msg_blk tmp_msg = entry->to_h_msg[0]; set_msg_id(&tmp_msg, entry->usr_msg_id); tmp_msg.size = entry->to_h_blks - 1; To prevent these possible null-pointer dereferences, copy to_h_msg, usr_msg_id, and to_h_blks from iter into temporary variables, and return these temporary variables to the application instead of accessing them through a potentially NULL entry.
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bcm_vk杂项驱动在bcm_vk_read函数中可能存在空指针取消引用。
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
II. Public POCs for CVE-2025-71291
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-71291 (6)
Same Patch Batch · Linux · 2026-05-06 · 224 CVEs total
| CVE-2026-43186 | 9.8 CRITICAL | ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data() |
| CVE-2026-43185 | 9.8 CRITICAL | ksmbd: fix signededness bug in smb_direct_prepare_negotiation() |
| CVE-2026-43125 | 9.8 CRITICAL | dlm: validate length in dlm_search_rsb_tree |
| CVE-2026-43208 | 9.8 CRITICAL | net: do not pass flow_id to set_rps_cpu() |
| CVE-2026-43198 | 9.8 CRITICAL | tcp: fix potential race in tcp_v6_syn_recv_sock() |
| CVE-2026-43114 | 9.4 CRITICAL | netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry |
| CVE-2026-43117 | 9.1 CRITICAL | btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() |
| CVE-2026-43083 | 9.1 CRITICAL | net: ioam6: fix OOB and missing lock |
| CVE-2026-43197 | 9.1 CRITICAL | netconsole: avoid OOB reads, msg is not nul-terminated |
| CVE-2026-43187 | 8.8 HIGH | xfs: delete attr leaf freemap entries when empty |
| CVE-2026-43215 | 8.8 HIGH | cifs: Fix locking usage for tcon fields |
| CVE-2026-43176 | 8.8 HIGH | wifi: rtw89: pci: validate release report content before using for RTL8922DE |
| CVE-2026-43283 | 8.8 HIGH | net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle |
| CVE-2026-43172 | 8.8 HIGH | wifi: iwlwifi: fix 22000 series SMEM parsing |
| CVE-2026-43113 | 8.8 HIGH | wifi: wl1251: validate packet IDs before indexing tx_frames |
| CVE-2026-43249 | 8.8 HIGH | 9p/xen: protect xen_9pfs_front_free against concurrent calls |
| CVE-2026-43239 | 8.8 HIGH | smb: client: prevent races in ->query_interfaces() |
| CVE-2026-43158 | 8.8 HIGH | xfs: fix freemap adjustments when adding xattrs to leaf blocks |
| CVE-2026-43112 | 8.8 HIGH | fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath |
| CVE-2026-43110 | 8.8 HIGH | wifi: brcmfmac: validate bsscfg indices in IF events |
Showing top 20 of 224 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53356
drm/i915/gem: Fix phys BO pread/pwrite with offset - CVE-2026-53355
net: rds: clear i_sends on setup unwind - CVE-2026-53354
arm64: errata: Mitigate TLBI errata on various Arm CPUs - CVE-2026-53353
hsr: Remove WARN_ONCE() in hsr_addr_is_self(). - CVE-2026-53351
riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI
Same vendor: Linux
- CVE-2026-53356
drm/i915/gem: Fix phys BO pread/pwrite with offset - CVE-2026-53355
net: rds: clear i_sends on setup unwind - CVE-2026-53354
arm64: errata: Mitigate TLBI errata on various Arm CPUs - CVE-2026-53353
hsr: Remove WARN_ONCE() in hsr_addr_is_self(). - CVE-2026-53351
riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI
V. Comments for CVE-2025-71291
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