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CVE-2026-43105— drm/vc4: Fix memory leak of BO array in hang state

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vc4_free_hang_state函数未释放BO数组，导致内存泄漏。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 214613656b5179f0daab6e0a080814b5100d45f0< 7235fc096ece53211bd2c0e958c65f9b802aeb98 affected
214613656b5179f0daab6e0a080814b5100d45f0< 686bb2fce082f043db50db02b5de5c64ca4dc4c4 affected
214613656b5179f0daab6e0a080814b5100d45f0< 9c092941fc1d00933bcb46ecac1cb930db3abf5d affected
214613656b5179f0daab6e0a080814b5100d45f0< a812008fe3a0aebb778d277b35717f64e23d0302 affected
214613656b5179f0daab6e0a080814b5100d45f0< 0d3c014a84396a147705f523a8fd6fc873e76502 affected
214613656b5179f0daab6e0a080814b5100d45f0< 421cea4f71f7cf65abaae878562ee4aa2b684628 affected
214613656b5179f0daab6e0a080814b5100d45f0< b8138567c4a80fd76a647849ebd4284996cf4b17 affected
214613656b5179f0daab6e0a080814b5100d45f0< f4dfd6847b3e5d24e336bca6057485116d17aea4 affected
… +10 more rows
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I. Basic Information for CVE-2026-43105

Vulnerability Information
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Vulnerability Title
drm/vc4: Fix memory leak of BO array in hang state
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Fix memory leak of BO array in hang state The hang state's BO array is allocated separately with kzalloc() in vc4_save_hang_state() but never freed in vc4_free_hang_state(). Add the missing kfree() for the BO array before freeing the hang state struct.
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vc4_free_hang_state函数未释放BO数组，导致内存泄漏。
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 214613656b5179f0daab6e0a080814b5100d45f0 ~ 7235fc096ece53211bd2c0e958c65f9b802aeb98 -
Linux Linux 4.5 -

II. Public POCs for CVE-2026-43105

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III. Intelligence Information for CVE-2026-43105

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Patches & Fixes for CVE-2026-43105 (7)

Same Patch Batch · Linux · 2026-05-06 · 224 CVEs total

CVE-2026-43208 9.8 CRITICAL net: do not pass flow_id to set_rps_cpu()
CVE-2026-43125 9.8 CRITICAL dlm: validate length in dlm_search_rsb_tree
CVE-2026-43198 9.8 CRITICAL tcp: fix potential race in tcp_v6_syn_recv_sock()
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-2026-43114 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-2026-43197 9.1 CRITICAL netconsole: avoid OOB reads, msg is not nul-terminated
CVE-2026-43083 9.1 CRITICAL net: ioam6: fix OOB and missing lock
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-2026-43113 8.8 HIGH wifi: wl1251: validate packet IDs before indexing tx_frames
CVE-2026-43110 8.8 HIGH wifi: brcmfmac: validate bsscfg indices in IF events
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-2026-43232 8.8 HIGH net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets
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-2026-43176 8.8 HIGH wifi: rtw89: pci: validate release report content before using for RTL8922DE
CVE-2026-43187 8.8 HIGH xfs: delete attr leaf freemap entries when empty

Showing top 20 of 224 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-43105

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