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CVE-2026-68410— wifi: libertas: fix memory leak in helper_firmware_cb()

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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于helper_firmware_cb()函数在成功异步加载后未释放单阶段固件镜像，导致USB固件下载路径中的内存泄漏。

AI Predicted 5.9 Difficulty: Easy EPSS 0.22% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1dfba3060fe7ee03ccec25a91d35085142dfc295< 6c1f54a04813676c5a2150d99331c8d21f199374 affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06 affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< ce829286f4935f1eb6b5dcb64da02910ce149c76 affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< d497b7566e74920acfe283dd6b2cbf1682890796 affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< 6cda91bbb8dc3d22ef0323008a12dcf73a5129da affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< 644640cde2fb216e6567de5eee780a38dbc95928 affected
1dfba3060fe7ee03ccec25a91d35085142dfc295< 63c2391deefb31e1b801b7f32bd502ca4808639b affected
… +10 more rows
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I. Basic Information for CVE-2026-68410

Vulnerability Information
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Vulnerability Title
wifi: libertas: fix memory leak in helper_firmware_cb()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix memory leak in helper_firmware_cb() helper_firmware_cb() neglects to free the single-stage firmware image after a successful async load, leading to a memory leak in the USB firmware-download path. Fix this memory leak by calling release_firmware() immediately after lbs_fw_loaded() returns. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in the current wireless tree. An x86_64 allyesconfig build showed no new warnings. As we do not have compatible Libertas USB hardware for exercising this firmware-download path, no runtime testing was able to be performed.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于helper_firmware_cb()函数在成功异步加载后未释放单阶段固件镜像，导致USB固件下载路径中的内存泄漏。
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 1dfba3060fe7ee03ccec25a91d35085142dfc295 ~ 6c1f54a04813676c5a2150d99331c8d21f199374 -
Linux Linux 3.13 -

II. Public POCs for CVE-2026-68410

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III. Intelligence Information for CVE-2026-68410

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Patches & Fixes for CVE-2026-68410 (8)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68410

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